Removing write protect from a seagate hard drive

[Dave Stevens]

Quoting JD <jd1008 at gmail.com>:

> On Wed, Nov 21, 2012 at 4:49 AM, Alan Cox <alan at lxorguk.ukuu.org.uk> wrote:
>>
>> On Tue, 20 Nov 2012 22:29:44 -0700
>> JD <jd1008 at gmail.com> wrote:
>>
>> > Is there a system util to use to issue
>> > a command to a hard drive to remove
>> > write protect?
>> > I had thought hdparm might do it, but
>> > the man page makes no mention of such
>> > feature in hdparm.
>>
>> SATA or some kind of USB thing ?
>>
>> If its SATA I'm not aware of a standard way to do it or of drives having
>> the feature for that matter. Check for a jumper and also if its suddenely
>> gone read-only perhaps its doing that because its failed ?
>>
>> What makes you think it's gone read only ?
>>
>> Alan
>
>
> It is an eSATA 2 drive in external enclosure with eSATA2 host interface.
> I now believe that the device state is being maintained in the kernel
> (Driver???)
> because of failure of disk to respond to host query to identify itself
> or to  host
> query to report it's DMA status??
> Please have a look at the error messages I had posted at
> http://www.sendspace.com/file/761te2
>
> Guess I should download full kernel source and peruse the drivers code to see
> if and where the read-only state is being set as a consequence of no response
> to host's queries.

seems like a lot of work. why not boot from a live CD and see if you  
can mount it read/write?

Dave

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