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.
Sfc external drive windows 7.
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.
I have a hard drive plugged into a dock that has windows 7 installed on it i would like to do a sfc on it because when i do it internally it says some files can t be repaired what is the command.
Well you can use an external repair disk or remove the.
The system file checker sfc exe is a command line tool built into windows that helps you repair corrupted system files.
If you can t boot your pc the winhelponline blog explains how to use it.
Sfc may also correct issues but it may not resolve the issue that you tried to correct in first place by running it.
The process is nearly identical.