cloning a boot partition

Rick Stevens rstevens at
Mon Jun 20 18:28:20 UTC 2005

karlp at wrote:
>>On 6/16/05, Mark Knecht <markknecht at> wrote:
>>>just unpacked a little EIDE to USB adapter device that is supposed to
>>>allow me to attach a raw EDIE drive to the system as a USB drive.
>>>(We'll see if it works in 20 minutes!) ;-) Anyway, I expect that the
>>>EIDE drive will be /dev/hda and the USB drive with be /dev/sda. Would
>>>something like this work?
>>>dd if=/dev/hda of=/dev/sda
>>Unfortunately it appears that this little USB to EIDE adapter I got
>>from Newegg doesn't work. (Or the drive is bad which seems unlikely)
> It appears to me that the issue is USB 2.0, which probably isn't backward
> compatible to USB 1.1, which I'd bet you need in order to get it to work.

Uh, USB2.0 will run USB1.1 devices if that's what you mean.  Note that
olders computers can't boot USB devices unless a BIOS update has been
performed.  Also, USB hard disks show up as SCSI (just like just about
everything else that isn't IDE/EIDE/ATA).
- Rick Stevens, Senior Systems Engineer     rstevens at -
- VitalStream, Inc.              -
-                                                                    -
-      The moving cursor writes, and having written, blinks on.      -

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