format c: /u
If you want an unconditional format
format c: /q
If you want a quick format - which just clears the disk without rewriting anything.
To format the C drive, you will need to run this from a floppy disk.
Galaxy Note 8 vs iPhone X
Awful clip art from 1994 is being tweeted every hour by a bot
How to update iOS on iPhone or iPad
Les meilleures applications pour enfants 2017