Solved

Ultrix CDROM mounting

Posted on 1997-04-09
5
619 Views
Last Modified: 2013-12-15
I use a DECStation at work which I believe uses Ultrix. Some of our software has been downloaded to CDROM. How do I mount this CDROM under Linux? I have used the following command:

     mount -t * /dev/hdc /mnt/cdrom

with * as all the file systems from the 'mount' man page, including 'ufs' which someone said should work. The result from using 'ufs' was:

     mount: block .... , mounting read-only
     ll_rw_block: device 16:00 only 512 char blocks implemented (1024)
     ufs_read_super: unable to read superblock
     mount: wrong fs type, bad option, bad superblock on /dev/hdc, or too many mounted file sytems.

The command to mount this CDROM under the DECStation Ultrix is:

     mount -r /dev/rz5c /cdrom
and  mount -r /dev/rz5f /cdrom/admin

Any answers?
0
Comment
Question by:jbduffy
5 Comments
 

Expert Comment

by:crbild
ID: 1627102
what kind of filesystems does your kernel support ?
(for see this do "cat /proc/filesystems")

and can you tell me what kind of filesystem is on the cdrom ?
the message you got is similar about the situations
in that the kernel is unable to understand the filesystem
or cause the cdrom is damaged.
0
 
LVL 2

Expert Comment

by:dux
ID: 1627103
Use the following command:
mount -t iso9660 /dev/cdrom /mnt
to mount your CD under /mnt directory.
/dev/cdrom is a link to your CDROM device which may be /dev/hdc1.
0
 

Author Comment

by:jbduffy
ID: 1627104
I had already tried all of the standard file systems with the '-t' option, ext2, minix, umsdos, msdos, iso9660, ext, xenix, sysv, ufs. None work.

If this helps, the office machine is a DECstation 5000/33 running Ultrix V4.3 Rev .44


0
 

Author Comment

by:jbduffy
ID: 1627105
In response to crhild's comment:

'cat /proc/filesystems' produces:
ext2, minix, umsdos, msdos, nodev proc, nodev nfs, iso9660, ufs

Unfortunately, I don't know which file system is on the CD, I assume it is native to Ultrix. The CD isn't damaged, it works fine at the office.
0
 

Accepted Solution

by:
gps051097 earned 100 total points
ID: 1627106
You want iso9660, the "modern" CDROM fromat. However some
manufacturers used to use older formats, which other systems
cannot read. Can you read the CDROM on a PC? I guess not.
Can you read iso9660 CDROM on the DEC machine (try it
with a CDROM that Linux CAN read!)

If so, you should migrate your company to using iso9660 ASAP,
and create all new CDROM's in that format. To do that you need two tools: mkisofs - to create a 660 MB file from all the bits,
and cdrecord, to put that image file (or partition) onto the CD.

You can find cdrecord at ftp://ftp.fokus.gmd.de/pub/unix/cdrecord
mkisofs is on sunsite or tsx-11. There are also complications
with multi-session (so create it all on one session), and
even with the TYPE of CDR MEDIA, and chemical-dyes it uses.
Some older CD-readers can't handle newer CDR's.

If necessary, you can copy the files to a PC and burn the CDROM
from there. Otherwise you are "locking yourself into DEC",
and may have a reduced set of "disaster recovery" options. Graham.
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

If you have a server on collocation with the super-fast CPU, that doesn't mean that you get it running at full power. Here is a preamble. When doing inventory of Linux servers, that I'm administering, I've found that some of them are running on l…
It’s 2016. Password authentication should be dead — or at least close to dying. But, unfortunately, it has not traversed Quagga stage yet. Using password authentication is like laundering hotel guest linens with a washboard — it’s Passé.
Learn how to navigate the file tree with the shell. Use pwd to print the current working directory: Use ls to list a directory's contents: Use cd to change to a new directory: Use wildcards instead of typing out long directory names: Use ../ to move…
This video shows how to set up a shell script to accept a positional parameter when called, pass that to a SQL script, accept the output from the statement back and then manipulate it in the Shell.

937 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

10 Experts available now in Live!

Get 1:1 Help Now