What is the difference between a mobile hard disk and a USB flash drive? How to repair a damaged mobile hard disk?

However, with the advancement of manufacturing technology, the storage capacity of mobile hard disks is getting larger and larger, and the quality is getting better and better. Mobile hard disks use magnetic media as storage and have mechanical parts. The data cables that are usually equipped with mobile hard disks can check two USB ports, and even need to be equipped with a special power supply. So do you think it is nice?

Contents of this article

1. What is the difference between a mobile hard disk and a USB flash drive?

2. How to repair a damaged mobile hard disk

3. What to do if the mobile hard disk cannot be accessed and opened

What is the difference between a mobile hard disk and a USB flash drive?

The main differences between a mobile hard drive and a USB flash drive include:

1. The storage principle is different. USB flash drives use semiconductor materials (chips) as storage units, also known as solid-state storage, and have no mechanical parts. Mobile hard drives use magnetic media as storage and have mechanical parts.

2. Different energy consumption. USB flash drives have no mechanical parts, so the energy they need to provide is much smaller than that of other flash drives. Generally, it will not exceed

100mA, and the power consumption of mobile hard disk is relatively large. Sometimes the current provided by one USB port cannot guarantee its normal operation. Therefore, the data cable of mobile hard disk is generally equipped with two USB ports, and even a special power supply is required. This is also the main reason why some mobile hard disks do not work properly.

3. Different size: U disk is obviously much smaller than mobile hard disk and is more convenient to carry.

4. Different safety: USB flash drives have no mechanical parts, so they are more resistant to vibration and moisture than mobile hard drives. However, they must be operated and used according to the prescribed procedures, and the USB flash drives must be of high quality. In case of problems, data recovery is much more difficult than with mobile hard drives.

5. Large capacity differences. Currently, the most common USB flash drives are 1G-32G, and the largest ones are 128G, which is much smaller than mobile hard drives. However, with the advancement of manufacturing technology, the capacity of USB flash drives will grow by leaps and bounds.

How to repair a damaged mobile hard disk

It is recommended to reinstall the mobile hard disk box first, or replace a mobile hard disk box and data cable to try; if the above problems are eliminated, it is possible that the disk body has a bad sector failure. At this time, you should stop powering on and try again. If the hard disk is still under warranty, go for warranty service. If the data is important, look for 51Recovery. If the warranty period has expired and the data is not important, you can use MHDD to detect bad sectors, but you need to do it from the disk and operate under DOS. The red and green blocks scanned out, MHDD also has its own repair function, but it is not recommended to save important data on this hard disk in the future.

What to do if the mobile hard disk cannot be accessed and opened

Solution to the problem that the mobile hard disk cannot be accessed and opened:

1. Click the Start and Run buttons, or use the shortcut key win plus R to call out the run program, enter cmd and press Enter.

2. Enter the DOS interface.

3. Enter chkdsk X in the DOS interface, where X is the drive letter where the problem occurs, and press Enter.

4. After the detection is completed, open the My Computer icon to check. If you still cannot access it, restart the computer.