Bulk erased drives
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From: Pieyed Piper on 27 Jun 2010 14:34 On Sun, 27 Jun 2010 10:18:28 -0700, Fred Abse <excretatauris(a)invalid.invalid> wrote: >On Sun, 27 Jun 2010 03:00:09 +0100, Nobody wrote: > >> But if you want to securely erase a drive, use "hdparm --security-erase". >> That will overwrite remapped sectors, "hidden" areas, etc, while "dd" will >> only overwrite the parts which are "visible". The feature is supported on >> all IDE drives made since ~2001 (at which time the largest available IDE >> drive was 15GB, so any drive larger than that will support it). > >If you really want to securely erase a drive, an oxy-acetylene torch on >the platters takes some beating ;-) Drill a hole through it where the plater(s) are/is at.
From: Nobody on 27 Jun 2010 23:41 On Sun, 27 Jun 2010 11:34:12 -0700, Pieyed Piper wrote: >>> But if you want to securely erase a drive, use "hdparm --security-erase". >>> That will overwrite remapped sectors, "hidden" areas, etc, while "dd" will >>> only overwrite the parts which are "visible". The feature is supported on >>> all IDE drives made since ~2001 (at which time the largest available IDE >>> drive was 15GB, so any drive larger than that will support it). >> >>If you really want to securely erase a drive, an oxy-acetylene torch on >>the platters takes some beating ;-) > > Drill a hole through it where the plater(s) are/is at. That will dramatically increase the cost of recovery, but it won't prevent it. Overwriting will provide better protection and you can re-use the drive.
From: Pieyed Piper on 28 Jun 2010 08:52
On Mon, 28 Jun 2010 04:41:00 +0100, Nobody <nobody(a)nowhere.com> wrote: >On Sun, 27 Jun 2010 11:34:12 -0700, Pieyed Piper wrote: > >>>> But if you want to securely erase a drive, use "hdparm --security-erase". >>>> That will overwrite remapped sectors, "hidden" areas, etc, while "dd" will >>>> only overwrite the parts which are "visible". The feature is supported on >>>> all IDE drives made since ~2001 (at which time the largest available IDE >>>> drive was 15GB, so any drive larger than that will support it). >>> >>>If you really want to securely erase a drive, an oxy-acetylene torch on >>>the platters takes some beating ;-) >> >> Drill a hole through it where the plater(s) are/is at. > >That will dramatically increase the cost of recovery, but it won't prevent >it. > >Overwriting will provide better protection and you can re-use the drive. Yes, it would. Only the flat portions would be able to have ANY data pulled from them. And that extraction takes more expensive gear than all but the federal boys have. The best way is to use RAID5 and bit strip your drives. Then when one fails, there is no recoverable data from it at all. Throw it away and move on. |