Using the command line tool cipher.exe built into Windows 7, can it be used to securely wipe a USB attached drive?
migrated from serverfault.com Jan 14 '11 at 1:17
Yes, but it may be slow compared to other tools that do the same job.
Substitute the drive letter
Remember this only overwrites free space, so delete all files first.
You can also use sdelete from http://technet.microsoft.com/en-us/sysinternals/bb897443