LinuxQuestions.org
Visit Jeremy's Blog.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Hardware
User Name
Password
Linux - Hardware This forum is for Hardware issues.
Having trouble installing a piece of hardware? Want to know if that peripheral is compatible with Linux?

Notices


Reply
  Search this Thread
Old 09-27-2004, 03:34 AM   #1
biggles
LQ Newbie
 
Registered: Jan 2003
Location: Australia
Distribution: RH8.0
Posts: 26

Rep: Reputation: 15
RedHat 9 CD/DVD ROM problem


After upgrading from RH8 to 9 (I know RH9 is finished and I plan to move on when Fedora 3 comes out) I had major problems but I solved them with the exception of my cdrom. I have just installed a dvd rom to replace a cdrom and both this new drive and the old one work perfectly. I have two cd drives, hdc and hdd. cdrom1>hdd is a burner and works without problems but when I try to mount cdrom>hdc I get:

Could not mount device.
The reported error was:
mount: /dev/cdrom: can't read superblock

I am not running scsi emulation that I know of.

ls -l /dev/cdrom produced this:
lrwxrwxrwx 1 root root 8 Apr 14 18:31 /dev/cdrom -> /dev/hdc

dmesg | grep CD

hdc: LITE-ON DVD SOHD-167T, ATAPI CD/DVD-ROM drive
hdd: ASUS CRW-5224A, ATAPI CD/DVD-ROM drive
hdd: ATAPI 52X CD-ROM CD-R/RW drive, 2048kB Cache, UDMA(33)
Uniform CD-ROM driver Revision: 3.12

dmesg
<snip>
ide-floppy driver 0.99.newide
ide-cd: ignoring drive hdc
hdd: attached ide-cdrom driver.
hdd: ATAPI 52X CD-ROM CD-R/RW drive, 2048kB Cache, UDMA(33)
Uniform CD-ROM driver Revision: 3.12
udf: registering filesystem
ide-cd: ignoring drive hdc
ide-floppy driver 0.99.newide
ide-cd: ignoring drive hdc
ide-floppy driver 0.99.newide
cdrom: open failed.
cdrom: open failed.
ide-cd: ignoring drive hdc
ide-floppy driver 0.99.newide
ide-cd: ignoring drive hdc
ide-floppy driver 0.99.newide
spurious 8259A interrupt: IRQ7.
ide-cd: ignoring drive hdc
ide-floppy driver 0.99.newide
ide-cd: ignoring drive hdc
ide-floppy driver 0.99.newide
cdrom: open failed.
cdrom: open failed.
ide-cd: ignoring drive hdc
ide-floppy driver 0.99.newide
ide-cd: ignoring drive hdc
ide-floppy driver 0.99.newide
ide-cd: ignoring drive hdc
ide-floppy driver 0.99.newide
ide-cd: ignoring drive hdc
ide-floppy driver 0.99.newide
ide-cd: ignoring drive hdc
ide-floppy driver 0.99.newide
ide-cd: ignoring drive hdc
ide-floppy driver 0.99.newide
ide-cd: ignoring drive hdc
ide-floppy driver 0.99.newide
ide-cd: ignoring drive hdc
ide-floppy driver 0.99.newide


this line might have something to do with it:
spurious 8259A interrupt: IRQ7

Any assistance will be greatly appreciated.

Thanks
Biggles.
 
Old 09-27-2004, 04:40 AM   #2
masand
LQ Guru
 
Registered: May 2003
Location: INDIA
Distribution: Ubuntu, Solaris,CentOS
Posts: 5,522

Rep: Reputation: 58
hi there

could u post the exact command u ran and he error message u get

regards
 
Old 09-27-2004, 05:30 AM   #3
biggles
LQ Newbie
 
Registered: Jan 2003
Location: Australia
Distribution: RH8.0
Posts: 26

Original Poster
Rep: Reputation: 15
Hi. Thanks for replying so quickly.

If I click on the desktop icon for cdrom or type
mount /mnt/cdrom/

I get:
mount: /dev/cdrom: can't read superblock

disc or no disc.

On the other hand if I try cdrom1 without a disc in I get:
mount: No medium found

Thanks
Biggles
 
Old 09-27-2004, 05:38 AM   #4
masand
LQ Guru
 
Registered: May 2003
Location: INDIA
Distribution: Ubuntu, Solaris,CentOS
Posts: 5,522

Rep: Reputation: 58
hi there

try mounting ur disk as

mount /dev/cdrom /mnt/cdrom

regards
 
Old 09-27-2004, 05:51 AM   #5
biggles
LQ Newbie
 
Registered: Jan 2003
Location: Australia
Distribution: RH8.0
Posts: 26

Original Poster
Rep: Reputation: 15
Hi again

I had to su to do that but it gave the same result:
mount: /dev/cdrom: can't read superblock

Thanks
Biggles
 
Old 09-27-2004, 06:23 AM   #6
masand
LQ Guru
 
Registered: May 2003
Location: INDIA
Distribution: Ubuntu, Solaris,CentOS
Posts: 5,522

Rep: Reputation: 58
hi there

what do u have in the cd???
have u tried this with a different CD.maybe the CD is damaged

regards
 
Old 09-27-2004, 06:31 AM   #7
biggles
LQ Newbie
 
Registered: Jan 2003
Location: Australia
Distribution: RH8.0
Posts: 26

Original Poster
Rep: Reputation: 15
Hi

This happens with and without a disc in. I have tried it with several discs and it won't play. It works when I boot into windows though so there is something wrong with they way my linux system is set up.

If all else fails I will just have to swap my two drives and lose the use of my burner under linux so I can use my dvd drive but I would like to use both under linux.

Thanks
Biggles
 
Old 09-27-2004, 06:34 AM   #8
masand
LQ Guru
 
Registered: May 2003
Location: INDIA
Distribution: Ubuntu, Solaris,CentOS
Posts: 5,522

Rep: Reputation: 58
hi there

i am sorry for i could not understand one thing that
is this the DVD rom u r getting the error???

regards
 
Old 09-27-2004, 06:37 AM   #9
biggles
LQ Newbie
 
Registered: Jan 2003
Location: Australia
Distribution: RH8.0
Posts: 26

Original Poster
Rep: Reputation: 15
Hi

Yes it is a dvd rom but I was also getting the same error when I only had a cdrom drive in.

Thanks
Biggles
 
Old 09-27-2004, 09:03 AM   #10
masand
LQ Guru
 
Registered: May 2003
Location: INDIA
Distribution: Ubuntu, Solaris,CentOS
Posts: 5,522

Rep: Reputation: 58
hi there

what i know is that in 2.4 kernels apart from scsi emulation u need to append a line like this during bootup in lilo or grub

"append hdc=ide-scsi"

so u can look into this direction also

regards
 
Old 09-27-2004, 06:41 PM   #11
biggles
LQ Newbie
 
Registered: Jan 2003
Location: Australia
Distribution: RH8.0
Posts: 26

Original Poster
Rep: Reputation: 15
Hi

I don't run scsi emulation for these drives but I changed lilo.conf anyway and I still get the same error:

Could not mount device.
The reported error was:
mount: /dev/cdrom: can't read superblock

I don't think we are going to find a solution to this one so I will just swap the drives over and use my burner in windows. At least I will have use of my dvd and hopefully the problem will be fixed when I upgrade to Fedora 3.

Thanks for your help.
Biggles
 
Old 09-27-2004, 11:22 PM   #12
masand
LQ Guru
 
Registered: May 2003
Location: INDIA
Distribution: Ubuntu, Solaris,CentOS
Posts: 5,522

Rep: Reputation: 58
hi there

why aren;t u running scsi emulation ,as far as i know need that fro ur CD burner

regards
 
Old 09-27-2004, 11:42 PM   #13
biggles
LQ Newbie
 
Registered: Jan 2003
Location: Australia
Distribution: RH8.0
Posts: 26

Original Poster
Rep: Reputation: 15
I did run scsi simulation for a while and my burner was ok but recently I was able to use my burner without it for some reason.

I swapped the drives over and now the dvd works but the burner doesn't but I have been thinking about it and I think it might be a defective ide cable. It might just be a coincidence that it shit itself when I upgraded the system so I will try a new cable and that might get both drives working.

Thanks for your help.
Biggles
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off



Similar Threads
Thread Thread Starter Forum Replies Last Post
Suse 10.0 dvd rom problem bf2master Linux - Newbie 2 11-10-2005 01:20 PM
Dvd-Rom Problem... Thinks it is software problem smcmlln Linux - Software 1 09-05-2005 09:13 AM
DVD rom problem with Debian flexiRobot Linux - Newbie 11 06-02-2004 02:03 PM
ASsus DVD-Rom Problem when mounting in gentoo nspm Linux - Hardware 4 04-27-2004 08:15 PM
Slackware setup problem dvd-rom was not reconized jsandro7 Linux - Newbie 2 01-22-2004 12:31 AM

LinuxQuestions.org > Forums > Linux Forums > Linux - Hardware

All times are GMT -5. The time now is 04:25 PM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration