external ssd introduce

It is a portable storage device that uses a hard disk as a storage medium to facilitate the exchange of large-capacity data between computers. The device is designed to emphasize portability, making it ideal for situations where you need to carry large amounts of data around with you. There are two main types of mobile hard drives: mobile solid state drives (SSDS) and mobile mechanical hard drives (HDDS). Mechanical hard drives are generally more cost-effective and relatively inexpensive, while solid state drives offer faster transfer speeds and are suitable for users who need to transfer data quickly, especially when working away from home.

The components of a mobile solid-state drive usually include a main controller, a memory unit, and a bridge chip. The housing is generally made of metal, which not only helps to dissipate heat, but also provides protection against pressure and shock. When the hard drive is connected to a computer or phone, an indicator will light up, indicating that the hard drive is working. In terms of interface, the common USB 2.0/3.0 type, and more high-end products may be equipped with USB 3.2Gen 2x2 interface, which means that the portable hard disk transmission speed of this interface can reach 2000MB/s, which means that several GB of video files can be transferred in a few seconds.

Mobile hard disk, mainly refers to the use of USB or IEEE1394 interface, can be plugged in or unplugged at any time, small and easy to carry hard disk memory, at a high speed and the system for data transmission. On products with USB1.1 interface specifications, it takes a long time to transfer a large amount of data. The USB2.0, IEEE1394, cSATA mobile hard disk interface is relatively much better. USB 2.0 interface transmission rate is 60MB/s, USB 3.0 interface transmission rate is 625 MB/s, IEEE 1394 interface transmission rate is 50 to 100 MB/s. Advantages of mobile hard disk: large capacity; Good compatibility, plug and play; High speed; Small size, small mass; Safe and reliable.
The mobile hard disk is mainly composed of a shell, a circuit board (including a control chip and data and power interfaces) and a hard disk. The shell is generally aluminum alloy or plastic material, which plays the role of anti-pressure, anti-seismic, anti-static, anti-fall, moisture-proof, heat dissipation, etc. The control chip controls the read/write performance of the mobile hard disk; Common data interface is USB and IEEE1394 two kinds; Taking into account the size, shock resistance, power consumption, energy saving and other aspects, usually choose 2.5-inch notebook hard disk.

Large capacity

Mobile hard disk can provide a considerable storage capacity, is a more cost-effective mobile storage products. Portable hard disk can provide users with large storage capacity and good portability at an acceptable price range. At present, the mobile hard drives on the market can provide 320GB, 500GB, 600G, 640GB, 900GB, 1000GB(1TB), 1.5TB, 2TB, 2.5TB, 3TB, 3.5TB, 4TB and other capacities, up to 12TB capacity, to a certain extent to meet the needs of users. With the development of technology, the capacity of mobile hard disk will be larger and larger, and the volume will be smaller and smaller.

Small size

Most of the mobile hard disks use USB and IEEE1394 interfaces, which can provide higher data transmission speed. However, the data transmission speed of the mobile hard disk is limited to a certain extent by the interface speed, especially in the USB1.1 interface specification products, when transferring a large amount of data, it will test the patience of the user. USB2.0 and IEEE1394 interfaces are much better.

Fast speed

Most of the mobile hard disks use USB, IEEE1394, eSATA interfaces, which can provide a high data transmission rate. However, the data transmission rate of the mobile hard disk is limited by the interface speed to a certain extent, especially on the products of the USBl.1 interface specification, which will test the patience of the user when transferring large data. The USB2.0, IEEE1394, eSATA interfaces are much better. USB2.0 interface transmission rate is 60MB/s, IEEE 1394 interface transmission rate is 50 ~ 100MB/s, and eSATA, when exchanging data with the host, read a gigabyte order of large files in a few minutes, especially suitable for video and audio data storage and exchange.

Easy to use

Now the PC is basically equipped with USB function, the motherboard can usually provide 2~8 USB ports, some displays will also provide USB adapters, USB interface has become a necessary interface in personal computers. USB devices can be used in most versions of WINDOWS operating systems without the need to install drivers, with a true "plug and play" feature, flexible and easy to use.

Safe and reliable

Data security has always been the most concerned issue of mobile storage users, and it is also an important standard for people to measure the performance of such products. Mobile hard disk has won the favor of many users with the advantages of high speed, large capacity, lightweight and convenient, and the greater advantage is the security and reliability of its stored data. This kind of hard disk is similar to the structure of the laptop hard disk and uses silicon disk. This is a more durable platter material than aluminum and magnetic, and has greater storage capacity and better reliability, improving data integrity. The use of silicon as a material disk drive, featuring a smoother disk surface, effectively reduces the number of irregular disks that may affect the reliability and integrity of the data, and the higher disk hardness makes the USB hard disk have high reliability.

Matters needing attention

The use of mobile hard disk should pay attention to the following problems:
1, do not use for a long time. Use a mobile hard disk with general materials, it is best not to plug in the computer for long-term work, mobile hard disk is used for temporary exchange or storage of data, not a local hard disk. Compared with the internal hard disk will work in a harsh environment at all times, the working time should be shortened as much as possible.
2. Do not defragment the disk. Do not defragment the removable hard disk, otherwise it will easily damage the hard disk. If you really need to organize, the method can be used to copy the data in the entire partition, and then copy back.
3, do not mix the power supply line. Do not mix the power cables. Because the power cables of the mobile hard disk box are dedicated, the voltage of the power cable interface may be different. If you insert them improperly, the box will be burned, and the hard disk will be burned.
4. Don't beat. Don't beat, take lightly; Pay attention to the temperature, do not overheat; Dry and waterproof, pull back first.
5, do not implement hot swap in the transmission process to prevent electromagnetic, dust, water and other external interference.

Product selection

1, mobile hard disk shell: mobile hard disk shell material is generally divided into metal and plastic two kinds. Generally speaking, the metal shell has better compression and heat dissipation performance, while the plastic shell has relatively more advantages in terms of shock resistance and weight .
2, PCB board control chip: the control chip on the mobile hard disk PCB is directly related to the read and write performance and stability of the product. At present, the control chip is mainly divided into high and low two grades. The representative of the high-end control chip is the plath CypressISD300A1 / CY7C68300B CY7C68300C, NECLiPD720133, prosperous nine PL - 3507. The characteristics of these chips: the price is more expensive, stability and compatibility are very good, is the first choice of high-end users. Representatives of low-end control chips are Anguo AU6390, Yangzhi ALi M5642, Skyworth CL811 series and so on. The characteristics of these chips are: stability and data transmission performance is relatively poor, but enough to meet the daily work needs, because of its low price, mostly used in low-end hard disk boxes .
3, hard disk box external interface: at present, the mainstream interface of mobile hard disk is high-speed USB2.0 and LiSB3.0 high-end products can see IEEE1394 or eSATA interface, IEEE1394 interface is divided into IEEE1394a and IEEE1394b two kinds: The IEEE1394a interface data transmission rate can theoretically reach 400Mbit/s(50MB/s). The IEEE1394h interface supports a transfer rate of 800Mbit/s(lOOMB/s). SATA can theoretically reach 3Cbit/s, which is the development direction of mobile hard disks in the future .
4. Quality: There are many so-called brand mobile hard disk on the market is actually assembled by the dealer, that is to say, the manufacturer provides the dealer with only the mobile hard disk box, the dealer gets the box and then put the hard disk into the quality of this brand mobile hard disk can not be guaranteed. Parallel hard disks or even repaired hard disks are likely to be put into mobile hard disk boxes and sold to unwitting consumers. When purchasing such products, please recognize the product's trademark, anti-counterfeiting logo, and ask the dealer for an official invoice and three-pack card. Avoid buying fake goods, invoices and three-pack cards are the proof of after-sales service in the future

Technical parameter

speed

Speed is an important indicator to measure the performance of mobile hard disk, which mainly depends on the data transmission rate and speed of the hard disk.

1. Data transmission rate
The data transmission rate of a hard disk emphasizes the internal transmission rate (the data transmission rate between the hard disk head and the cache), while the mobile hard disk refers more to the data transmission rate of its interface. Because the mobile hard disk is connected to the system through an external interface, the speed of its interface limits the data transmission rate of the mobile hard disk. Although the current USB1.1 interface can provide 12 Mbps; USB 2.0 interface can provide 480 Mbps; IEEE 1394a interface can provide 400 Mbp; IEEE 1394b can provide a data transmission rate of 800 Mbps, but in practical applications will be due to some objective reasons (such as storage devices used in the main control chip, circuit board production quality is good, etc.), slowed down the transmission rate in the application.
2. Speed
The speed of the ordinary hard disk in the home is generally 5400pm, 7200 rpm, etc., and the high speed hard disk is now the first choice for desktop users; For notebook users, 4200 rpm and 5400 rpm are the main, although some companies have released 7200rpm notebook hard drives, but it is still relatively rare in the market.
Mainstream 2.5-inch brand portable hard drives have read speeds of about 15-25MB/s and write speeds of about 8-15MB/s. It takes about 6 minutes and 40 seconds to copy a 4GB DVD movie to a portable hard drive at a write speed of 10MB/s. It takes about 3 minutes and 20 seconds to copy a 4GB DVD movie from a portable hard drive at a reading speed of 20MB/s

Power supply

For laptops, when the 2.5-inch USB mobile hard drive works, the hard drive and data interface are powered by the USB interface. The USB interface can provide 0.5A current, and the working current of the laptop hard disk is 0.7 ~ 1A, and the general data copy will not be a problem. However, if the hard disk capacity is large or the mobile file is large, it is easy to have insufficient power supply, and if the USB port supplies power to multiple USB devices at the same time, it is also easy to have insufficient power supply, resulting in data loss or even hard disk damage. To enhance power supply, a 2.5-inch USB portable hard drive usually provides a power cable that takes power from the PS/2 port or usb port. When moving the hard disk to move large files, etc., you need to connect the PS/2 power supply cord. 3.5-inch mobile hard drives generally come with external power supplies, so there is basically no problem with power supply. IEEE1394 interface can provide up to 1.5A current, so no external power supply is required).
Tip: In terms of power issues, in general, a usb port power supply is sufficient. However, it is possible to encounter the need to connect two interfaces at the same time, so the user is best to buy a data cable with two USB interfaces when purchasing, to avoid the situation of insufficient power supply

dimension

At present, mobile hard drives can be divided into three types by size: 3.5-inch desktop hard drives; 2.5-inch laptop hard drive; 1.8-inch micro hard disk. Among them, the 3.5-inch desktop hard disk has the advantages of fast speed and large capacity, but it is large, heavy and inconvenient to carry, and because the hard disk is designed for the desktop, the shockproof performance is poor, but there are still certain advantages in terms of price and capacity. 2.5-inch notebook hard disk is specially designed for the notebook, the size and weight are smaller. There is also a special design in shock resistance, good shock resistance, the most used in the current mobile hard disk. 1.8 inch micro hard disk, also designed for notebooks, good seismic performance, and size, weight is also the smallest of the three, but its price is higher, the capacity is smaller, more difficult to popularize, more suitable for special needs users.

capacity

Capacity is the storage space of the mobile hard drive. In 2006, the mainstream hard drive capacity was increased from 160GB to larger capacity. At present, the 250G and 320G products are quite cost-effective. The world's largest single disk capacity reached 750G, 320G product market has been quite mature, the price is also very reasonable. And 400G or above products are still a high-priced series, ordinary users rarely consider. Although 160G and 250G are the mainstream capacity, but limited to cost and actual use needs, for general office and home applications, the choice of 80G or even lower 40G has been fully able to meet the needs.

port

The interface type refers to the type of interface used by the mobile hard disk to connect to the computer system, rather than the interface type of its internal hard disk. Because the mobile hard disk can be connected to the system through the interface, the interface determines the performance and data transmission speed of the connection with the system. At present, the common data interfaces of mobile hard drives are USB and IEEE1394. USB is the mainstream interface of mobile hard disk at present, and it is also the interface of almost all computers, with the advantages of hot swappable, unified standards, and multiple external devices. There are two USB standards: USB1.1 and USB2.0. The USB2.0 transfer speed is up to 480Mbps, which is 40 times that of the USB1.1 interface. USB2.0 requires motherboard support and can be backward compatible. The same brand USB2.0 mobile hard disk box is 30 to 50 yuan more expensive than the USB1.1, but because of the huge difference in speed, USB2.0 has become the mainstream of the market.
Before the USB2.0 standard came out, the USB1.1 standard was very slow, with the fastest read and write speed of 1.5MB/s; The IEEE 1394(Firewire interface) read and write speed can be close to about 50MB/s, so for a long time, Firewire is synonymous with high-speed transmission.
However, after the USB2.0 standard came out, the maximum reading and writing speed is close to 60MB/s, so that the Firewire interface is left behind in a flash, and almost all computers have USB connection ports, only a few computers have Firewire ports, so the purchase of mobile hard disk can be completely without considering the use of Firewire interface models. There are new mobile hard drives are beginning to support the USB3.0 standard, USB3.0 while maintaining the compatibility with USB 2.0, the transmission speed is greatly improved: the maximum transmission bandwidth is up to 5.0Gbps, that is, 640MB/s. However, if you are using an Apple computer, Firewire can come in handy at this time, and it is more appropriate to choose a mobile hard disk with a Firewire interface. In general, the Firewire interface is a dispensable thing

quakeproof

In terms of shock resistance, the spindle of the 2.5-inch notebook hard disk adopts FBD (FluidDynamicBearing) liquid bearing motor. The oil film replaces the ball, effectively avoiding the high temperature and noise caused by the friction of the ball. At the same time, the oil film can absorb the sudden vibration very well. On the other hand, laptop hard drives generally use the "zero contact" head start-stop technology. In the non-working state, the magnetic head is in the docking area and does not contact the platter. When working, the magnetic head flying height is low, the advanced silicon disk surface is smooth, and the scratch probability caused by accidental vibration of the magnetic head is greatly reduced. These technologies reduce the probability of damage to the mobile hard disk during movement. As a result, many original well-known brand hard drives have passed hundreds of drop tests at different angles in professional laboratories

Development trend

With the rapid application of the Internet, the popularity of all kinds of digital consumer electronic products and the continuous development of the concept of mobile in various fields from business office to personal entertainment and leisure, the demand for personal data storage, especially the demand for mobile storage, is growing faster and faster. Over the past few years, in the mobile storage market, mobile hard disk with its relative to optical media storage (such as CDRWDVDRW, etc.) higher access speed, simpler access process and relative to flash storage (that is, U disk) larger capacity, lower price and other advantages, more and more by ordinary consumers and commercial users, the market space is also growing.
However, in the rapid development of technology, more diversified products, and increasingly fierce competition in the market environment, the trend and development of the market has shown some trends that can be grasped.
Minimize volume, maximize capacity
"Minimize volume, maximize capacity" can be said to imply the development trend of the entire mobile storage device: easy to carry, large space. IBM released its first 1-inch hard drive in 1999 with a capacity of 340MB, increased the capacity to 1GB in 2000, and by 2009, the production 1-inch hard drive could provide more than 4GB of storage space on a disk the size of a five-cent yuan coin. Enough to make a home in a variety of small and dainty consumer electronics. At the same time, as of 2009, the maximum capacity of the 2.5-inch notebook hard drive, which has basically become the standard configuration of mobile hard drives, has reached 80GB, almost equal to the capacity of mainstream desktop hard drives. Although the 1.8-inch hard disk entered the mobile storage market late, it perfectly reconciled the contradiction between volume and capacity. The capacity of a 1.8-inch hard disk is about 50-75% of that of a 2.5-inch hard disk, but it is thinner, smaller, and lighter than a 2.5-inch hard disk. From the perspective of the world's newest and smallest mobile hard disk, 1.8 inches, the structure design is exquisite and compact, and the volume of the entire product is condensed to 68mm×91mm×15mm under the optimal operation, which is equivalent to 1/2 of the traditional 2.5-inch mobile hard disk. It is the smallest mobile hard disk on the global market. As smaller portable devices that require tens of gigabytes of internal storage come to market, we will see more and more adoption of 1.8-inch portable hard drives.

Speed up - the speed at which data is accessed

The access speed of mobile storage devices is still greatly improved. First of all, the interface standard of mobile hard disk has been upgraded from USB1.1 to USB2.0, which is an important milestone in the development of mobile hard disk. The traditional USB specification is specifically designed for low-speed device communication, which determines that its data transmission rate can only reach 12Mbps, but due to the wide application of large files such as video and audio, database and game software, the access speed of mobile storage products has been challenged. USB2.0 interface, the data transmission rate can reach 480Mbps, greatly improving the data transmission speed. As of 2009, more and more mobile storage products on the market began to support USB2.0 interface, Siba company's Pepsi mobile hard disk series products, USB2.0 interface is also standard configuration, so that the series of products not only has the advantages of small volume and large capacity mentioned in the above trend, And in terms of data transmission speed, it also occupies a leading position in the entire mobile storage market.
However, as the industry is widely concerned: Has the USB2.0 interface standard reached the limit of mobile storage in terms of transmission speed? Is it possible that there will be faster interface standards in the future?

Practical - integrating multiple technologies

In 2009, domestic mobile storage manufacturers began to promote multimedia mobile hard drives. Gradually integrate the functions suitable for mass consumers, such as the multimedia mobile hard disk that can play high-definition movies, the high-definition player that can download movies directly with the Internet cable, and the multimedia mobile hard disk player that can also read news, check the weather, and stock online, combining data storage with audio and video entertainment.
The wireless hard disk housing is provided with a USB chip, the housing is also provided with a Bluetooth module and an infrared transmission module respectively connected with the USB chip, and the upper part of the housing is provided with a Bluetooth and infrared switch knob. The U disk can transmit data with computers and other devices through infrared transmission or Bluetooth transmission, eliminating the process of physical plugging, thus greatly extending the service life of the mobile hard disk; At the same time, due to the existence of the Bluetooth module, the mobile hard disk can be used by multiple computers at the same time, which greatly improves its utilization efficiency.

Secure storage

There is no doubt that users are the most concerned about the data security of mobile storage products. Data confidentiality, stability, etc., as a product's sale points (selling points) are direct and indispensable. This development trend is also an important guarantee that mobile hard disks have always occupied a place in the mobile storage product market. Although compared with flash memory, mobile hard disk is temporarily at a disadvantage in shockproof, safety and other performance, but mobile hard disk manufacturers for shockproof, anti-fall and other safety technology exploration has never stopped. In the case of Siba Electronics, many of the technologies applied to the Pepsi 1.8-inch portable hard drive give this product a unique advantage in secure storage. Its automatic balancing roller system can protect the hard disk in harsh environments or sudden vibration can still operate normally, to maximize the protection of hard disk and data security. In addition, Patriot's unique seismic mobile hard disk technology is sought after by consumers who are concerned about storage security. After analysis, human accidents such as accidental falls and collisions are important reasons for threatening data security. Three-dimensional dynamic shock absorption technology. This is AIGO own independent intellectual property rights of shock absorption technology. When the mobile hard disk crashes, the impact energy transmitted to the hard disk is reduced, thus protecting the hard disk data. After security testing, Patriot mobile hard disk can guarantee 1.5 meters fall and the data is safe, and bought a security insurance for the data. At the same time, in the market, there are more and more products in the direction of hardware encryption.

Stylish appearance

As with the development of all electronic products, users of mobile hard drives also have fashionable requirements for the appearance of products, especially when it is a durable consumer product that can be carried around and shown to others. In addition to the appearance of the mobile hard disk is getting smaller and smaller in volume, lightweight and cute, its material performance, feel, decoration, color, and product appearance have also become the demanding conditions of consumers. Mini (Mini) represents not simple, but the synchronous improvement of quality, and the beauty of internal and external repair. Wavy full-metal shell design products, such as Siba's Pepsi Ling, in addition to breaking through the limitations of volume, but also in the shape of a better, with a unique personality and quiet style, with a variety of color design, calm and quiet lake blue, cool and cold gray, soft and elegant purple and dazzling silver white, Bring perfect fashion feeling to different users.
The market is increasingly rich in products, at the same time, the trend of demand and consumption will slowly obtain two-way stability. Although the future market competition will be more intense, but the progress of product technology and the stability of market order will make the majority of mobile storage users and competing manufacturers profit at the same time. With the gradual strengthening and emergence of the comprehensive strength of manufacturers such as Silicon Power Electronics, the leadership of the major players will become more prominent, which will ultimately determine the market share of their products. The future of mobile storage will bring users a better experience

Common fault

Mobile hard disk is used more in the office field, the following introduces several common mobile hard disk troubleshooting cases.
A frequent crash occurs when copying data to an external hard drive
This is not the case when an external hard drive performs the same operation in another computer. Because most of the current mobile hard disks are powered by the USB interface on the motherboard, if the USB interface power supply capacity is insufficient, resulting in unstable voltage when data is exchanged through the USB interface, there will be a crash failure. If the mobile hard disk supports an external power supply, it is best to use the external power supply to power it. If the external power supply is not supported, it is best to reduce the amount of data transmitted, that is, a large amount of data is transmitted multiple times. In addition, if the operating system is unstable, it may also cause the mobile hard disk to crash while working. These external devices have really high power requirements. Therefore, the standard power supply of the computer is 300W.
Blue screen often occurs when using an external hard disk
At first, the USB interface was suspected of insufficient power supply, and after replacing the high-power power supply, the fault remained. Later suspecting that the system was unstable, it was found that there was no driver installed for the VIA(VIA) chipset that came with the motherboard, and in the driver, there was a special USB driver. After reinstalling the motherboard driver, the fault is rectified.
Maintenance tips: Although the Windows operating system comes with a lot of hardware drivers, can also be installed normally, but for some parts that are not compatible, it is best to install the original driver.
The system cannot detect the portable hard disk
Fault symptom: The mobile hard disk is connected to the computer, the hard disk makes a sound of "click, click", the indicator on the hard disk keeps blinking, the system can normally detect the USB device, but can not view the icon of the mobile hard disk.
Fault diagnosis: The fault may be caused by the unstable voltage of the USB port. If the system can detect the USB device, it indicates that the system can detect the hard disk. According to the indicator keeps blinking and accompanied by the sound of "click, click", it can be judged that the mobile hard disk is not damaged.
Troubleshooting: Replace the hard disk to another computer, and troubleshoot if it can be used normally.
Unable to copy files to portable hard drive
Symptom: Connect the mobile hard drive you just bought to your computer, sometimes you can copy the file, sometimes you can't copy it. What is the reason for this?
Analysis and treatment: This is also caused by insufficient power supply. Because the USB hard disk also needs to consume a certain amount of power when working, if the power is accessed directly through the USB interface. Power shortages are likely. Almost all mobile hard disks are attached with a separate external power supply or PS/2 adapter, then as long as the external power supply is connected in advance or through the PS/2 adapter connection, the problem can generally be solved.
Not available with USB extension cable
The mobile hard disk can be used directly into the computer, but the USB extension cable connected to the USB flash drive can not be used, what is the reason?
Analysis and processing: From the problem described above, it is mainly caused by the use of USB extension cable. Because the mobile hard disk is the interface of the USB20 standard, this requires that the cable connecting the computer and the mobile hard disk must support the USB2.0 standard. Therefore, the use of the USB1.1 standard connection cable for the USB flash drive will cause the USB20 standard mobile hard drive to not be correctly identified. Simply replace a USB2.0 standard cable to resolve the problem.
The file name in the portable hard drive is garbled
Fault phenomenon: Just buy not long mobile hard disk just started to use is very normal, some time ago copy some files into, after a few days only to find that the file name of the mobile hard disk files have become garbled. Why is that?
Analysis and processing: The case of garbled file names is mostly caused by the incorrect use of mobile hard disks. For example, the mobile hard drive is removed directly without "safely deleting USB devices", or the mobile hard drive is read and written when the USB port power supply is insufficient. In addition, the mobile hard disk track or sector error, may also lead to the mobile hard disk file name garbled, of course, the most likely cause of such problems is the mobile hard disk power supply is insufficient, many mobile hard disk need double USB interface to achieve power supply and data transmission, if the use of such mobile hard disk, it is necessary to pay attention to must connect.
Problems with dual USB ports
For this kind of problem, if the hard disk is not a serious fault such as bad sectors, generally use the disk tool of Windows can be repaired, the method is as follows: Right-click the folder of the mobile hard disk partition with garbled characters, and choose "Properties" command from the pop-up menu. In the Properties dialog box that opens, switch to the Tools TAB and click the Start Check button in the Debug column

Product encryption

Many users often take a notebook to go out to work, or use a U disk or mobile hard disk to carry a variety of data, but in case of accidental loss, it will cause data disclosure. Is there a way to avoid this? The answer is yes, using BitLocker encryption can also be used to encrypt mobile hard drives, USB sticks, and non-system partitions of computers, and only enter the correct password to access the data inside. In this way, whether the U disk is lost or the notebook is moved by the thief, you do not have to worry about the information inside will be leaked.
The steps for encrypting a non-system partition of a hard drive are exactly the same as for encrypting a USB flash drive.
Encryption method
Step 1 Right click on the partition you want to encrypt, select the "Enable BitLocker" option, then select the "Unlock drive with password" check box in the dialog box that pops up, and set the password in the corresponding field. After setting up, click the "Next" button.
Step 2 In order to avoid the embarrassment of the user forgetting the key and losing access to the data, the wizard provides the recovery key. Users can save the recovery key to a file or print it out and put it in a safe place. In this example, save to a file.
Step 3 Click the "Start Encryption" button to start encryption. The encryption process may take several minutes or longer, depending on the size of the drive. Please wait patiently. After the encryption is complete, click Close in the dialog box that is displayed.
After the encryption is complete, to access the encrypted USB flash drive or hard disk partition in the future, you need to enter the correct password to unlock the drive