odd issue with 6.4-PRERELEASE #2 and udf/cd9660

Wojciech Puchar wojtek at wojtek.tensor.gdynia.pl
Mon Nov 24 05:47:42 PST 2008

really odd.

check if your /dev/cd0 actually works by

dd if=/dev/cd0 bs=64k of=test.image

and if dd won't fail. try then mounting image with mdconfig/mount_cd9660

On Sun, 23 Nov 2008, Zane C.B. wrote:

> When ever I try try to mount any burned CD/DVD media I get the error
> below.
> mount_cd9660 -v /dev/cd0 /mnt
> using starting sector 0
> mount_cd9660: /dev/cd0: Input/output error
> Exit 1
> Which in dmesg results in...
> g_vfs_done():cd0[READ(offset=-2207623839744, length=2048)]error = 5
> This is odd because if I unplug the USB CD drive and plug it into my
> netbook running a old RELENG 7.0-STABLE it works. On the machine that
> it errors on it has been doing this for any burned CD/DVD media in
> either the DVD drive in it or on the USB one I've been testing with.
> I know the disk is good as I can mount it on other machines I've
> tested it on with the same drive and different drives.
> Any one have any ideas?

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