Imaging SCSI hard disks

From: Jochen Kunz <>
Date: Wed Sep 1 02:55:33 2004

On Mon, 30 Aug 2004 16:00:00 +0100 wrote:

> I've a couple of SCSI hard drives (DEC RZ24-S) that I'd like to do a
> complete image of. If I stick them in a linux box and do a dd on them,
> will it copy all the blocks from the device,
It will copy every sector from the disk, from the first to the last.

> or am I going to get
> messed around by the PC BIOS INT13 doing stupid CHS translation on the
> otherwise LBA device and potentially miss some blocks at the end of
> the device?
CHS and LBA are more or less IDE / BIOS "problems".

> Does Linux go through the SCSI cards BIOS or does it talk
> directly to the carsd hardware & so do raw LBA?
Linux does not use the BIOS to access disks. Even for IDE disks.

> Of course, it probably all depends on the version of linux I'd use.
The version has no effect on this.

If you have no Linux machine yet, you may have a look at "knoppix".
Received on Wed Sep 01 2004 - 02:55:33 BST

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