Error Message:

Insufficient room in root directory Move files from root directory and repeat CHKDSK.

Explanation:

When the Chkdsk command converts lost chains into files, it creates a directory for the found files in the root directory. There was not room in the root for this new directory.

User Action:

Copy one or more files from the root directory into a subdirectory and use the Chkdsk command with the /f switch again.