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Old 02-09-2005, 07:47 AM   #1
linswf
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help - unable to mount DVD on FC3


HI,

I looked around but was unable to find any answers to this problem.... (I would appreciate it if you could direct me to an answer if there is already one posted....)

I have upgraded from FC2 to FC3
Following which I am unable to mount my dvd rw drive (LG)
The error I receive is:

[root@localhost mnt]# mount /dev/hdc /mnt/cdrom1
/dev/hdc: Input/output error
mount: block device /dev/hdc is write-protected, mounting read-only
/dev/hdc: Input/output error
mount: /dev/hdc: can't read superblock

This is a valid dvd data disc (tested on Windows)
dmesg reads:

Buffer I/O error on device hdc, logical block 16
Buffer I/O error on device hdc, logical block 17
hdc: media error (bad sector): status=0x51 { DriveReady SeekComplete Error }
hdc: media error (bad sector): error=0x34
ide: failed opcode was 100
ATAPI device hdc:
Error: Medium error -- (Sense key=0x03)
(reserved error code) -- (asc=0x10, ascq=0x90)
The failed "Read 10" packet command was:
"28 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 "
end_request: I/O error, dev hdc, sector 0
FAT: unable to read boot sector

my /dev directory holds:
lrwxrwxrwx 1 root root 3 Feb 7 10:00 cdrom -> hdc
lrwxrwxrwx 1 root root 3 Feb 7 10:00 cdwriter -> hdc
lrwxrwxrwx 1 root root 3 Feb 7 10:00 dvd -> hdc
lrwxrwxrwx 1 root root 3 Feb 7 10:00 dvdwriter -> hdc
brw------- 1 root disk 22, 0 Feb 7 10:00 hdc

fdisk -l doesn't show the device at all.
running grub with boot option "hdc=ide-scsi" doesn't solve anything
I am able to access the device (for instance with a dvd movie) running "mplayer dvd://1"
changing the udev to the older version suggested somewhere here in the forum doesn't solve the problem either.

any help would be greatly appreciated.....

Thanks.

Eyal.
 
Old 02-09-2005, 09:26 AM   #2
HalfDiminished
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Registered: Jan 2005
Location: Santa Barbara, CA
Distribution: Ubuntu Hoary/Debian 3.1/RHEL-WS3/DSL 1.1
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Welcome to the foggy land of udev. By upgrading to FC3 you have shed the fat of devfs and are now 100% udev. I'm a Debian user facing the same issue. I'm trying to get my cdrw working and have found that there is so much to learn about udev. And since Fedora is so popular, I found a gazillion threads about DVD mounting and udev when I googled for usb drive and udev. So I think there are two things to consider:
1. Try mounting the drive as root - sometimes its a permissions thing
2. Know that you are dealing with something called udev and that lots of people are having the same problem as you. It looks like some fixes work for some people but not for others. FC3 should have correctly installed the kernel, but recompiling a custom kernel could prove advantagous for your problem.
 
Old 02-17-2005, 10:54 PM   #3
das_deniz
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this seems like it might be the answer:

http://www.mjmwired.net/resources/mjm-fedora-fc3.shtml

have yet to try it myself - touble w/ dvd based install of fc3 <grrrrr>.
 
Old 02-20-2005, 03:56 PM   #4
linswf
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Registered: Feb 2005
Posts: 6

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Thanks,
But the solution there is to install the latest udev,
Unfortunately I already have that one installed, so I guess that
doesnt solve it.

Thanks anyway.
 
  


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