Solution to read-only USB flash drive files in Ubuntu

The file system read-only problem occurs on the USB flash drive under Ubuntu. The problem is that existing files in the USB flash drive cannot be deleted and new files cannot be copied to the USB flash drive. But I don't know why. Today, I am determined to solve this problem. Solution: 1. Run the following command on the Ubuntu terminal: tail-f/var/log/syslog2. insert a USB flash drive with a read-only file system failure. 3. Observe the command line output part as follows: Jul816

The file system read-only problem occurs on the USB flash drive under Ubuntu. The problem is that existing files in the USB flash drive cannot be deleted and new files cannot be copied to the USB flash drive. But I don't know why. Today, I am determined to solve this problem.

Solution:

1. Run the following command on the Ubuntu terminal:

Tail-f/var/log/syslog 2. Insert a USB flash drive with a read-only file system failure

3. Observe the command line output

The output part is as follows:

Jul 8 16:44:50 cslouis-pc kernel: [15595.155904] FAT: Filesystem error (dev sdb4)

Jul 8 16:44:50 cslouis-pc kernel: [15595.155905] fat_get_cluster: invalid cluster chain (I _pos 0)

From the above we can see that the file system mounted to the U disk is/dev/sdb4, and the file system is faulty (FAT: Filesystem error)

4. Enter the following command:

Umount/media/ZCF (ZCF is your USB flash drive name, which can be viewed by ls in the media Directory)

5. Fixed USB flash drive file system faults

Sudo dosfsck-v-a/dev/sdb4

After the above five steps, the USB flash drive can restore the read/write function.