Nowadays, we have commonly used U disks to install systems. We know that the prerequisite for this is to have a U disk boot disk. The MBR in the boot partition of the USB boot disk is actually the first sector that exists on the bootable partition. If the MBR in the USB flash drive is damaged, then our USB flash drive cannot boot and the operating system cannot be installed. Today, the editor of Huajun will show you how an expert will teach you how to repair the MBR of a USB flash drive. I hope you will support and share the carefully selected content. If you like it, hurry up and get it!

step:

1. Use the backup MBR file to restore the USB flash drive

If you have backed up the master boot record before, you can use winhex or other specialized disk management tools to restore the MBR.

Because the file information previously backed up is accurate, this method is also the most stable.

2. Rebuild MBR record

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For dedicated disk management software such as PQ or PM, even if there is no previously backed up MBR record, the software can try to reconstruct the MBR based on data analysis.

The specific method is as shown below, but one thing you must know is that for operating systems started in AHCI mode, this kind of reconstruction is not necessary, and may even cause the operating system to fail to start.

3. How to back up MBR information?

Backing up MBR information is far simpler than restoring or rebuilding MBR information. In addition to the support of many professional tools, we can also use software such as winhex to directly open disk sectors, copy the data in them, and save them as files.

As above, after these steps, we can easily repair the damaged MBR of the USB flash drive. However, if the ghost win7 boot disk is not installed in the USB flash drive, then this kind of recovery is meaningless. Similarly, MBR recovery of local disks can also be performed using this method.