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SubjectError trying to mount cdrom after 2.6.4
Something strange is happening since i migrated from 2.4.25 to 2.6.4.
I cannot mount my cd-rom just after boot. (The cd-rom works fine in
2.4.25 and works on Windows, so it's not problem with device). In many
cases, if I open my fstab and delete something, close, re-open and
rewrite what I deleted, and close again, works (I don't know why!). In
others I just have to waiting a fews hours to be able to mount my device.

The dmesg shows me:

ide-cd: cmd 0x28 timed out
hdd: DMA timeout retry
hdd: timeout waiting for DMA
hdd: command error: status=0x51 { DriveReady SeekComplete Error }
hdd: command error: error=0x50
end_request: I/O error, dev hdd, sector 18446744073707859296
isofs_fill_super: bread failed, dev=hdd, iso_blknum=16, block=16

my fstab is:
/dev/cdrom /mnt/cdrom iso9660 users,noauto,ro
0 0

/dev/cdrom is a link for /dev/hdd

my /proc/ide/drivers:
ide-cdrom version 4.61
ide-disk version 1.18

cd-rom model:
LG CD-RW CED-8080B

/proc/ide/hdd/settings:
name value min max mode
---- ----- --- ---
----
current_speed 34 0 70 rw
dsc_overlap 0 0 1
rw
ide-scsi 0 0
1 rw
init_speed 34 0 70
rw
io_32bit 0 0
3 rw
keepsettings 0 0
1 rw
nice1 1 0
1 rw
number 3 0
3 rw
pio_mode write-only 0 255 w
unmaskirq 0 0
1 rw
using_dma 0 0
1 rw

Thanks,
Olavo B. D'Antonio
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