How to erase hard drive . . .
I recently replaced a server (OS linux redhat 7.3) with a new one. Now I'd like to erase the hard drive in the old server to prevent anyone at the host facility from possibly accessing some sensitive data.
The old server is still online, but I'm over 700 miles away and only have net access.
I suggest that you talk to someone in management at the host facility about the need to secure the sensitive data.
dd if=/dev/zero of=/dev/hd*
will zero a hard disk. Files may still be recoverable with forensics programs.
Wipe overwrites the data multiple times with more than zeros and is a more complete "erase".
There is other stuff available.
I have also heard that a hammer or shotgun works well.
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