Mounting cdrom
Ozymandias
of Minix 3. When I attempted to start X, xdm complains that
"getconfig" can't find the perl module File::Glob. Upon perusal I
found that the standard perl modules weren't on my system, and
searching the archives here found a post to the effect that the
default install is missing perl modules, and I should do a packman
install.
Unfortunately I'm not networked yet (and probably won't be until next
week), so I decided to cut the provided perl package to a CD and
install it from there.
So my question is how do I do a simple mount of my cdrom drive?
Larry Johnson
Bill Marcum
For standard iso9660 cdroms, you don't mount them, you use isoread and
isodir.
--
There is no sadder sight than a young pessimist.
Vertex....@gmail.com
> On 19 Feb 2007 18:11:07 -0800, Ozymandias
>
Hi guys, I'm having a similar problem. if you cannot access the cd-rom
directly, how do I use the command isodir? I'm not really sure what
the special name argument should be or how to find it. Any help would
be appreciated.
Al Woodhull
> ... if you cannot access the cd-rom
> directly, how do I use the command isodir? I'm not really sure what
> the special name argument should be or how to find it. Any help would
> be appreciated.
There are man pages for the isoinfo, isodir, and isoread commands.
The part command is your friend for identifying devices, and finding
their names. It isn't just something to use when installing a new
system.
On a running Minix system, as root type "part" at the command line. On
the display that results, initially /dev/c0d0 will be highlighted.
This device is always a hard disk. Type 'r' to see how it is
partitioned. Type '+' to move on to the next major device, which will
be /dev/c0d1. It is possible there will be no device corresponding to
this name. If a device is present you will see how it is partitioned.
If there is no device there you will see
"/dev/c0d1: No such device or address"
Now press '+' again, to see /dev/c0d2. If it is the CD-ROM drive and
there is no CD currently in the drive you will see:
"/dev/c0d2: Readonly
/dev/c0d2: I/O error
/dev/c0d2: Invalid partition table (reset)"
If there is a CD in the drive, but it is not a Minix CD you will see:
"/dev/c0d2: Readonly
/dev/c0d2: Invalid partition table (reset)"
If there is a Minix CD in the drive CD you will see just the readonly
message and the partition table.
In most cases you will find the CD-ROM drive is c0d2, but it could
also be c0d1 or c0d3.
With a standard installation CD-ROM for Minix 3, the CD will appear
to have three Minix partitions. However, p0 is not really a Minix
file system, and it can't be mounted.
You can read the directory of a non-Minix CD or of p0 of a Minix CD
with the isodir command:
asw> isodir /dev/c0d2
bootflop.img presz134.zip readme.txt setup.pdf
setup.ps
version.txt
(Note that you don't need to specify a partition, to the isodir
command there is no difference between the 0th partition and the
entire CD).
To access the Minix-formatted partitions you must mount them, like
this (note the -r is important for a CD, a read-only device):
asw> mount -r /dev/c0d2p1 /mnt
/dev/c0d2p1 is read-only mounted on /mnt
To read the files on p0 or on a non-Minix CD use isoread. It outputs
to standard output, so for a long file you can pipe it to "more" to
read on the screen or you can redirect to a file to save on your hard
disk:
For instance, to read a file:
asw> isoread /dev/c0d2 readme.txt | more
or to copy from the CD to the current Minix directory:
asw> isoread /dev/c0d2 readme.txt > readme.txt
The remaining iso* command is isoinfo. Like isodir it sees the entire
CD and the 0th partition as the same thing. For a Minix disk this is
all it sees, that is, the size it reports is only the size of the iso-
formatted part of the CD, and doesn't include the space used by p1,
p2, or p3.
- Al
Philip Homburg
Al Woodhull <awoo...@hampshire.edu> wrote:
>On
>the display that results, initially /dev/c0d0 will be highlighted.
>This device is always a hard disk.
This is not true. On systems with SATA disks and IDE CD-ROMs, c0d0 may
very well be a CD-ROM device.
--
That was it. Done. The faulty Monk was turned out into the desert where it
could believe what it liked, including the idea that it had been hard done
by. It was allowed to keep its horse, since horses were so cheap to make.
-- Douglas Adams in Dirk Gently's Holistic Detective Agency
Al Woodhull
> In article <1172530777.410360.155...@z35g2000cwz.googlegroups.com>,
>
> Al Woodhull <awoodh...@hampshire.edu> wrote:
> >On
> >the display that results, initially /dev/c0d0 will be highlighted.
> >This device is always a hard disk.
>
> This is not true. On systems with SATA disks and IDE CD-ROMs, c0d0 may
> very well be a CD-ROM device.
You are right, of course. I should have stated c0d0 has always been a
hard disk on the old machines on which I have tested Minix. You
clearly have access to newer hardware than I do.