Re: [debian-knoppix] check CD-R
Hi Dirk,
On Mon, Jan 06, 2003 at 13:22:59 +0100, Dirk Kamp wrote:
> how i can check a iso CD-R. i have only the cdr and not the iso
> image. which tool i must use for testing it. i can´t find "fsck.iso9660"
> on the knoppix cd. This CD-R are not knoppix, i know that i can test
> knoppix at startup, but i need a tool to testing other CDs and that
> there iso images are not damage on the CDs.
AFAIK there is no iso9660 checking tool. Maybe there is one in the
cdrtools from Joerg Schilling.
A simple check for physical read errors would be reading all sectors of
the cd with dd or readcd:
dd if=/dev/cdrom of=/dev/null
or
readcd dev=x,y,z f=/dev/null (x,y,z is determined with cdrecord -scanbus)
This usually results in an error reading the last two sectors. If no
other errors occur, the CD-R media is readable. However, this provides
no information about the iso9660 filesystem integrity or possible file
corruption.
bye,
Chris
--
Christian Perle perle@itm.tu-clausthal.de
Grunaer Str. 31 http://www.itm.tu-clausthal.de/~perle/
01069 Dresden LinuxGuitarKitesBicyclesBeerPizzaRaytracing
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