Run SFC on external (or other) drive

Useful info on running SFC on an external (or second installed) drive:

https://www.ghacks.net/2017/05/21/run-sfc-scannow-on-external-drives/

sfc /scannow /offwindir=d:\windows /offbootdir=d:\

 

Logs in Linux

Most logs are in /var/log/, including /var/log/apt/history.log (log for apt). Use zless for reading .gz files (zless /var/log/apt/history.1.gz).