Re: Having Problems Mounting CDROM

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Vorpahl, Jason Stephen wrote:
Thanks for replying.  I typed mount /mnt/cdrom  The directory does
exist.
 - Jason

-----Original Message-----
From: Bill Tangren [mailto:[EMAIL PROTECTED] Sent: Tuesday, 
June 17, 2003 9:24 AM
To: [EMAIL PROTECTED]
Subject: Re: Having Problems Mounting CDROM

Vorpahl, Jason Stephen wrote:

   -->

I am a Linux newbie and just installed Red Hat 9.  I am creating a
samba
server using just the command line interface, no X installed. 
Installation went fine, until I tried to set up my samba server. 
I can't mount the cdrom.  Here are the errors I get:



hdc: command error: status=0x51 { DriveReady SeekComplete Error }

hdc: command error=0x50

end_request: I/O error, dev 16:00 (hdc) sector 9992036 // this repeats


about 20 times with different sectors listed



UDF-fs: No partition found (1)



ISOFS: unable to read i-node block



mount: not a directory



Could someone please give me any idea of what I am looking at?  I have
a
CD-ROM on it's own IDE channel set up as a master.  I tried to mount
the
floppy drive and that worked fine.  Any suggestions would be 
totally welcome because I can't do anything w/out my cdrom.



Thanks a million,

Jason

OK, we need to see the output from the 'df' command. hdc is usually 
the third hard disk in your computer, not a cd drive. CD devices 
will be something like st0 (for a scsi tape) or ht0 (for an ide 
tape). df will tell you some things about hdc.

Also, do you get this error any where else? Does it show up when you 
run the dmesg command?

What exactly do you type to mount the CD?

Bill
I think there is something else going on here, because I have run 
into the same problem and have done some additional investigations. 
I think there is some incompatibility between the cd-rom drivers in 
RH 9 and certain cd-rom drives.
Here's what I did and found out:
I installed RH 9 onto a computer that had been running RH 7.3.  I did 
a complete fresh install, erasing and partitioning the hard drive. 
RH 9 install gives you a chance to "check" your CDs before the 
installation process begins.  All three CDs checked out fine and 
there were no problems performing the installation.  After the 
installation was done and the computer re-booted, I tried to mount 
one of the CDs to install some additional rpm packages.  I could not 
get the cd to mount, as root:

# mount /dev/cdrom

or even

# mount -t iso9660 /dev/cdrom /mnt /cdrom

and yes the /mnt/cdrom directory exists and /dev/cdrom is a symbolic 
link to the correct device for the cd-rom.  There is also a correct 
entry in the /etc/fstab file. [I would cut and paste to here, but I'm 
on a different system with no access.]

The errors you get are either "not a directory" or the series of seek 
error message that you have shown in your post.  At first I thought 
it was simply a bad cdrom drive, but then I noticed that the same 
thing happened when I installed RH 9 onto another computer (same 
exact model).

So, I took my 3 RH 7.3 CDs and installed RH 7.3 onto the "problem" 
computer and lo and behold I can mount all kinds of CDs, the 3 7.3 
CDs and the 3 RH 9 CDs.  What's going on here?  CD-ROM drive works 
fine and mounts CDs with RH 7.3, with RH 9, installs ok, but can't 
mount CDs.  I confirmed this again, by installing RH 9 back on to the 
machine and again I can't mount CDs.

That was all I had time for, I'm kind of in limbo on this.  I 
replaced the CD-ROM drive with a different brand and now RH 9 is fine 
with mounting CDs, so I think it also depends upon the model of the 
CD-ROM drive.  The one I have is a Samsung CD-ROM SC-140 ATAPI (as 
reported in dmesg).

I also did a kernel upgrade and get different error messages,  but I 
had to stop work on the project ...

Hope this helps...

Steve Bernstein

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