Re: Compactflash cards dying?

Daniel Egger (degger@fhm.edu)
03 Feb 2003 01:36:32 +0100


This is a MIME-formatted message. If you see this text it means that your
E-mail software does not support MIME-formatted messages.

--=_courier-28246-1044233012-0001-2
Content-Type: text/plain
Content-Transfer-Encoding: quoted-printable

Am Son, 2003-02-02 um 23.30 schrieb Pavel Machek:

> First time I repartitioned it; now I only did mke2fs, and data
> corruption can be seen by something as simple as

> cat /mnt/cf/mp3/* > /mnt/cf/delme; md5sum /mnt/cf/delme.

> Anyone seen something similar? Are there some known-good
> compactflash-es?

CF has limited write cycles. A few hundred if you're lucky.
And depending on the type of flash it's quite likely that every
changed byte will result in a whole block being written back.

I'm running dotzends of CF cards and due to some care not a single
one has developped bad blocks as of yet.

--=20
Servus,
Daniel

--=_courier-28246-1044233012-0001-2
Content-Type: application/pgp-signature; name="signature.asc"
Content-Transfer-Encoding: 7bit
Content-Description: Dies ist ein digital signierter Nachrichtenteil

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.1 (GNU/Linux)

iD8DBQA+PbmPchlzsq9KoIYRAtigAKDkYnDnCE5O8Gp4jOT0xLUli3daxwCg0ns3
cXWyisZpuJtwSoI+X8O3L5s=
=3xiW
-----END PGP SIGNATURE-----

--=_courier-28246-1044233012-0001-2--