The process is nearly identical.
Sfc external drive windows 7.
Executing sfc scannow from outside of windows when running sfc scannow from outside of windows like from the command prompt available when you boot from your windows installation disc or flash drive or from your system repair disc or recovery drive you ll have to tell the sfc command exactly where windows exists.
Run sfc scannow on external drives you may run the sfc scannow command on external drives or internal drives with another windows installation.
Sfc may also correct issues but it may not resolve the issue that you tried to correct in first place by running it.
Run sfc scannow on external drives if windows is not loading up and you want to run system file checker on the drive what would you do.
Deployment image servicing and management dism is a command line program for windows that is used for a variety of purposes it is available in all versions of windows starting with windows 7 and windows server 2008.
If you can t boot your pc the winhelponline blog explains how to use it.
Tap on the windows key on the keyboard type cmd exe hold down the ctrl key and the shift key and hit the enter key.
Dism comes to the rescue in these situations.