linux-kernel - Re: Linux kernel - Libata bad block error handling to user mode program

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Message-ID: <4B9D0879.5050809@teksavvy.com>
Date:	Sun, 14 Mar 2010 12:02:01 -0400
From:	Mark Lord <kernel@...savvy.com>
To:	Greg Freemyer <greg.freemyer@...il.com>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	foo saa <foosaa@...il.com>, linux-kernel@...r.kernel.org,
	linux-ide@...r.kernel.org, Jens Axboe <jens.axboe@...cle.com>,
	linux-mm@...ck.org
Subject: Re: Linux kernel - Libata bad block error handling to user mode 
 program

On 03/11/10 13:29, Greg Freemyer wrote:
>>
>> But really.. isn't "hdparm --security-erase NULL /dev/sdX" good enough ???
>>
>
> This thread seems to have died off.  If there is a real problem, I
> hope it picks back up.
>
> Mark, as to your question the few times I've tried that the bios on
> the test machine blocked the command.  So it may have some specific
> utility, but it's a not a generic solution in my mind.
..

Yeah, a lot of BIOSs do a "SECURITY FREEZE" command before booting,
which disables things like "SECURITY ERASE" until the next hard reset.

So, on a Linux system, just unplug the drive after booting, replug it,
and usually it can then be erased.

But yeah.. that all makes things tricker for non-techies.

Cheers
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