Re: FreeAgent USB HDD

On Thu, Nov 29, 2007 at 06:05:24PM +0000, andy wrote:
> Hi all
>
> Yesterday, I bought a 500GB Seagate FreeAgent (external) USB hard drive.
> I plugged it in, downloaded the necessary ntfs-3g driver and all was
> fine. Today I plug it in and my Lenny system can't find it at all. There
> is nothing loaded on media and it seems that as far as my system is
> concerned, it has ceased to exist.
>

It depends: I'm using a similar drive. These drives are very prone to turn themselves off into power saving mode or similar / lose interrupts. At this point they remount read only / with directories with no permissions.

A colleague used Google to find that the problem may be with SCSI emulation - if you echo 1 > allow_restart in /sys/block/sd*/device/scsi_disk:<numbers> the problem may go away.

Known problem :(

Andy

> How can I load this manually and how can I prevent this from happening
> again? I am not even sure how to debug this, so any help on that score
> would be useful too. It has something like 100GB of data on it from
> yesterday which I am extremely loathe to lose.
>
> Thanks for any assistance.
>
> Andy
>
> --
>
> "If they can get you asking the wrong questions, they don't have to worry
> about the answers." - Thomas Pynchon, "Gravity's Rainbow"
>
>
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