[Leaplist] linux can not read data DVDs???

[ray]

John Simpson wrote:
> On 2007-02-02, at 1503, "pberry2"@cfl.rr.com wrote:
>> ray wrote:
>>> cat /etc/fstab
>>> # /etc/fstab: static file system information.
>>> #
>>> # <file system> <mount point>   <type>  <options>       <dump>  <pass>
>>> proc            /proc           proc    defaults        0       0
>>> /dev/sda3       /               ext3    defaults,errors=remount-ro
>>> 0       1
>>> /dev/sda1       /boot           ext3    defaults        0       2
>>> /dev/sda4       /home           ext3    defaults        0       2
>>> /dev/sda5       none            swap    sw              0       0
>>> /dev/hda        /media/cdrom0   udf,iso9660 user,noauto     0       0
>>> /dev/scd0       /media/cdrom1   udf,iso9660 user,noauto     0       0
>>> /dev/fd0        /media/floppy0  auto    rw,user,noauto  0       0
>>> ray at debian64:~$ sudo mount -t udf /dev/hda /media/cdrom0
>>> Password:
>>> mount: block device /dev/hda is write-protected, mounting read-only
>>> mount: wrong fs type, bad option, bad superblock on /dev/hda,
>>>        missing codepage or other error
>>>        In some cases useful info is found in syslog - try
>>>        dmesg | tail  or so
>>>
>>> ray at debian64:~$ sudo mount -t udf /dev/scd0 /media/cdrom1
>>> mount: No medium found
>>>
>>> still no  luv...
>>
>> When I find "No medium found" errors, I change out the optical unit,
>> because it means that the laser is burned out, or the circuitry is
>> blown.
>> Or, in a rare instance, that the firmware is faulty.
>
> or maybe he physically put the DVD into the IDE-based CD/DVD-ROM drive
> rather than the SCSI CD/DVD-ROM drive, and that error happened because
> the SCSI drive was empty, therefore "No medium found" means exactly
> what it says.
>
> does the machine physically have two CD-ROM drives? if so, are you
> sure which drive you put the DVD into? if so, what was the point in
> trying to mount the other drive, which you knew to be empty?
>
> did you try running "dmesg | tail" after getting the error message
> when you tried to mount /dev/hda, like it told you to do? if so, what
> did it tell you?
>
> ----------------------------------------------------------------
> | John M. Simpson    ---   KG4ZOW   ---    Programmer At Large |
> | http://www.jms1.net/                         <jms1 at jms1.net> |
> ----------------------------------------------------------------
> | http://video.google.com/videoplay?docid=-4312730277175242198 |
> ----------------------------------------------------------------
>
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> Leaplist mailing list
> Leaplist at leap-cf.org
> http://lists.leap-cf.org/mailman/listinfo/leaplist
>   
yes there are 2 drives on this system, cdrom0 is the one with the media,
thus the

mount: block device /dev/hda is write-protected, mounting read-only
mount: wrong fs type, bad option, bad superblock on /dev/hda,
       missing codepage or other error
       In some cases useful info is found in syslog - try
       dmesg | tail  or so

and when i run dmesg | tail i get the following.  the only reason i tied
to mount cdrom1 was to show that yes both drives are there and only 1
has the disk in it.


sudo mount -t udf /dev/hda /media/cdrom0
Password:
mount: block device /dev/hda is write-protected, mounting read-only
mount: wrong fs type, bad option, bad superblock on /dev/hda,
       missing codepage or other error
       In some cases useful info is found in syslog - try
       dmesg | tail  or so

ray at debian64:~$ dmesg | tail
ISO 9660 Extensions: Microsoft Joliet Level 1
ISOFS: changing to secondary root
cdrom: This disc doesn't have any tracks I recognize!
attempt to access beyond end of device
hda: rw=0, want=68, limit=4
attempt to access beyond end of device
hda: rw=0, want=1252, limit=4
attempt to access beyond end of device
hda: rw=0, want=1028, limit=4
UDF-fs: No partition found (1)


now when i put this disk in winXP, or OSx i can read 100% of the data on
the disk.   ONLY Linux can not read these disks.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.leap-cf.org/pipermail/leaplist/attachments/20070203/bdcb75d8/attachment-0001.html