If a drive is not specified CHKDSK runs for the drive that the command is executed from. The default drive for the Command Prompt is Windows’ C: drive.
To run for the flashdrive either 1. switch the Command Prompt to the flashdrive’s drive letter or 2. enter the flashdrive’s drive letter to the CHKDSK command.
Assuming the flashdrive has drive letter F:
1.
C:\Users\Ed>F:
F:\>CHKDSK
C:\Users\Ed>CHKDSK F:
OK?
Also to find help for any Command Prompt command enter the command’s name followed by /?.
For example:
C:\Users\Ed>CHKDSK /?
C:\Users\Ed>DIR /?
etc
