From: "H. Peter Anvin" <hpa@zytor.com>
To: Theodore Tso <tytso@mit.edu>, "H. Peter Anvin" <hpa@zytor.com>,
Pavel Machek <pavel@suse.cz>,
kernel list <linux-kernel@vger.kernel.org>
Subject: Re: SD/MMC cards: how crappy they are?
Date: Tue, 02 Dec 2008 09:59:42 -0800 [thread overview]
Message-ID: <4935778E.1020405@zytor.com> (raw)
In-Reply-To: <20081202165608.GD18162@mit.edu>
Theodore Tso wrote:
>
> If this is your random eject out from your HP laptop problem, note
> that random ejects while the card is writing can cause corruption of
> the flash translation layer (FTL), which for some really crappy cards,
> can permanently damage them; hopefully most of those are gone from the
> market, but I wouldn't be positive about that. The better ones will
> have some kind of journalling scheme for their FTL...
>
I have seen flash cards die permanently from having a partition table it
didn't like written to it. Yes, the microcontroller on the flash card
tried to interpret the partition table, assumed to be MS-DOS style, and
would crash.
-hpa
next prev parent reply other threads:[~2008-12-02 18:00 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-12-02 14:48 SD/MMC cards: how crappy they are? Pavel Machek
2008-12-02 16:30 ` H. Peter Anvin
2008-12-02 16:56 ` Theodore Tso
2008-12-02 17:59 ` H. Peter Anvin [this message]
2008-12-04 10:32 ` Pavel Machek
2008-12-04 19:03 ` H. Peter Anvin
2008-12-26 21:46 ` Pavel Machek
2008-12-26 21:49 ` H. Peter Anvin
2008-12-26 22:39 ` Pavel Machek
2008-12-27 1:03 ` Ben Pfaff
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4935778E.1020405@zytor.com \
--to=hpa@zytor.com \
--cc=linux-kernel@vger.kernel.org \
--cc=pavel@suse.cz \
--cc=tytso@mit.edu \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.