How do I check and repair MS-DOS file systems under Linux?

You can use Linux fsck (check and repair a Linux file system) program. However normal fsck looks for ext2 or ext3 file system. Use dosfsck program that check and repair MS-DOS file systems.

It verifies the consistency of MS-DOS file systems and optionally tries to repair them. For example, run dosfsck on a MS-DOS formatted floppy disk:

# dosfsck /dev/fd0

The following file system problems can be corrected using this program:

  • FAT contains invalid cluster numbers.
  • Directories with a large number of bad entries (probably corrupt). The directory can be dropped.
  • Files . and .. are non-directories.
  • Directories . and .. in root directory. They are dropped.
  • Bad file names. They can be renamed.
  • Duplicate directory entries. They can be dropped or renamed.
  • Directory . does not point to parent directory. The start pointer is adjusted.
  • File contains bad or free clusters. The file is truncated etc

Posted by: SXI ADMIN

The author is the creator of SXI LLC and a seasoned sysadmin, DevOps engineer, and a trainer for the Linux operating system/Unix shell scripting. Get the latest tutorials on SysAdmin, Linux/Unix and open source topics via RSS/XML feed or weekly email newsletter.

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