Unable to open the memory card, USB flash drive prompts unformatted repair methods

When a user uses a USB flash drive, the USB flash drive is suddenly unplugged, or the USB flash drive is temporarily paralyzed due to power failure. When another machine is inserted into the USB flash drive, the "disk I: not formatted" prompt or the USB flash drive cannot be opened, you need to format the USB flash disk. If there is any important data in the USB flash disk, you cannot format it as needed. Let's take a look at several methods to learn how to restore the USB flash disk data.

Tip: the disk is not formatted.

During data transmission on a USB flash drive, sudden unplugging, power failure, or crashes may cause a USB flash drive error or failure. The system prompts "disk X: not formatted" and cannot open the memory card, the USB flash drive prompts that unformatted data is often caused by failure of the boot sector and DBR damage. The following describes how to recover internal data for sector damages. You can also recover the entire USB flash disk.

I. data recovery software

This is the most basic data saving method. You can use this software to recover data, whether it is hard disk or USB flash drive failure or accidental data deletion. Because the USB flash drive only damages the sector, and the data in it is intact, you can use the software to detect it and extract it. We can use easyrecover, which is free of charge and supports raw format (if an error occurs, you can view the USB flash drive attribute and the format will be displayed). data‑e is also very good, if you have registered dataworks, we recommend that you use easyrecover.

The USB flash drive File System Displays raw

1. Use data‑e to restore Data

(1) Open: select the third option, select the USB flash drive, and click OK.

Use data‑e to recover USB flash disk data

(2) After the scan, the data is basically out, And you will choose your important materials. You can right-click the selected file on the registration edition and extract the file.

Data‑e scan USB flash drive

2. Use easyrecover to restore

(1) Click "data recovery", click "advanced data", and select your USB flash drive, in the advanced section, select "file system type" with FAT32 fat16 NTFS. If you think about what the original format is hard disk or USB flash disk, try it again or twice. Generally, the USB flash disk has more FAT32.

(2) Click "Next" and the content will be displayed after the scan. Because the data is already in it and has not been destroyed, all direct extraction can be enabled, which is no problem, an error occurred while opening the deleted file after extraction.

Use easyrecovery to recover USB flash disk data

After this operation, the data is basically saved. You can format the USB flash disk and copy the extracted data back to the USB flash disk.

2. Back up data through the Ghost Image

You can run ghost32.exe through ghost to install the operating version of the system. Select "local"-"partition"-"to image" and select a USB flash disk. This method may not work because ghost backup is related to the boot area, check whether your memory card or USB flash drive boot area is damaged.

Use ghost to restore USB flash drive data files

(I can't choose the USB flash drive option, but I can only find a solution.) After backing up, you can use "ghost assumer.exe" to open it and extract information! You can also try the osghost software for backup, which is more capable of identifying damaged disks.

Back up Ghost Software

3. Restore boot sector data by modifying

You can modify and restore the boot sector data to solve the problem from the root cause and recover the USB flash drive! (This direct method is the best, relatively reliable, and can be restored to the status before the problem occurs.) The two methods described earlier are mainly used to back up the data on the USB flash disk, indirect solution to the problem, the following method is mainly used to solve the problem. Because the disk is damaged by the Boot Sector DBR and the DBR is in The 0th sector, operations are performed on the 0th sector:

1. Repair the boot zone through software

Use the software to repair the boot area, use the bootice Boot Sector maintenance tool, and use diskgenius to repair and maintain the boot area. This tool is easy to use. If the boot area of the USB flash disk is damaged, the primary boot record may be gray, you can try it.

Bootice-guided sector Maintenance Tool

Diskgenius, which can modify partition tables and fix boot partitions.

2. clone a USB flash disk through winhex

Clone the USB flash drive through winhex, generate an imgfile, format the USB flash drive, import the formatted USB flash drive to winhex, copy the boot zone information, open IMG, repair the boot zone, and clone it to the USB flash drive, this is exactly the same before the problem occurs.

Click Clone USB flash drive

Clone a USB flash drive using winhex

(1) clone the image with winhex, click the image, and click OK. An IMG file is generated. After the boot area is generated, You Can format the USB flash disk. The formatted boot area information is correct, so copy the boot area according to the above method.

(2) Open the generated imgfile, click professional tools-convert the image file to a disk, and then click it to display the start sector, select, and write (paste) the correct boot information.

(3) Click Save. Here, click Clone disk. But this time, select the modified imgfile as the source, select the USB flash disk as the target, and then confirm. After that, the data of the USB flash disk is exactly the same as that of the original one! (You can also use the virtual optical drive and other software to open the imgfile and extract the data !)