[CentOS] Question about dd (fill a hard disks' unused space with blanks)
Rainer Duffner
rainer at ultra-secure.de
Sun Jun 7 17:45:57 UTC 2009
Am 07.06.2009 um 19:27 schrieb Niki Kovacs:
> Kevin Krieser a écrit :
>
>>
>> I've done the zeroing out thing on mounted filesystems before when I
>> wanted to move the contents of a drive to another. zeroing out
>> before
>> would be best if you planned to do an install, then back it up for
>> later. Otherwise, you end up with a lot of unused space that has
>> remnants of old data scattered around.
>
> Yeah, but I'm a bit confused here. How would you go about it from a
> LiveCD ?
Ever booted a live-CD?
It also knows your disks (unless it's a server, except for maybe the
CentOS LiveCD, most other's suck on servers - they simply don't
recognize the controllers).
Of course, dd on the device wipes everything, so you do it before
installing OS+applications.
Rainer
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