[ubuntu-us-mi] cannot reboot/powercycle machine with external USB drive powered on

[Aaron VanSledright]

Your BIOS is probably set to boot from a USB... and im guessing you dont
have an operating system on the drive :) Remove USB boot from your bios

On Tue, Jan 5, 2010 at 3:08 PM, Robert Citek <robert.citek at gmail.com> wrote:

> Hello all,
>
> I have an Ubuntu machine (dual boots 8.10 and 9.04) that has an
> external USB drive (Verbatim 1TB).  If try rebooting or power-cycling
> the machine with the drive powered on, the system does not complete
> the boot process and drops me into a busybox shell.
>
> That is, these steps work:
>
> - power-off machine, power-off drive, power-on drive, power-on machine
> - power-off machine, power-off drive, power-on machine, power-on drive
> - power-off drive, power-off machine, power-on drive, power-on machine
> - power-off drive, power-cycle machine, power-on drive
> - power-off drive, reboot machine, power-on drive
>
> This does not work:
>
> - power-cycle machine with drive kept on
> - reboot machine with drive kept on
>
> I suspect that some signal is being sent to the drive during shutdown
> that puts the drive into an unusable state that can only be reset by
> power-cycling the drive.  Is that correct?
>
> If so, then I have two questions:
>
> 1) is there a way to prevent the drive from going into that state?
> 2) is there a way to resurrect the drive from that state without
> power-cycling the drive?
>
> Regards,
> - Robert
>
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-- 
Aaron VanSledright
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