/Guides/FreeBSD/Beginners/

General Information

This guide explains how to mount a floppy image and/or a CD-Rom ISO using mdconfig.

Requirements

1. Root access.
   
2. A floppy image or a CD-Rom ISO.

Usage

Mounting a floppy image

To mount a floppy image, create a virtual device, /dev/md0, for the floppy image.

#	mdconfig -a -t vnode -f /tmp/boot.flp -u 0

Now mount the virtual device.

#	mount /dev/mnt0 /mnt

Mouting a CD-Rom ISO

To mount a CD-Rom ISO, create a virtual device, /dev/md0, for the CD-Rom ISO.

#	mdconfig -a -t vnode -f /tmp/cdrom.iso -u 0

Now mount the virtual device.

#	mount_cd9660 /dev/mnt0 /mnt

Unmounting and Deleting a Virtual Device

To unmount and delete a virtual device, first unmount the virtual device.

#	umount /mnt

Then delete the virtual device, /dev/md0.

#	mdconfig -d -u 0

Author: Jared Barneck
rhyous at yahoo dot com

I just use simple loop.sh script for that:

#! /bin/sh
dev_node=`mdconfig -a -t vnode -f ${1}`
mount_cd9660 /dev/${dev_node} ${2}

usage: # loop.sh file.iso /mnt

after you have finished work with it just unmount it: # umount /mnt

works both for floppy and cdrom images.

Pls show me my wrong :
dhcppc0# loop.sh /home/mk/FC-One-20070121.iso
/bin/loop.sh: Permission denied.
dhcppc0# chown root:wheel /bin/loop.sh
dhcppc0# chmod +x /bin/loop.sh
dhcppc0# loop.sh /home/mk/FC-One-20070121.iso
usage: mount_cd9660 [-begjrv] [-C charset] [-o options] [-s startsector]
                    special node
HOWTO fix this? Thanks.

dhcppc0# loop.sh /home/mk/FC-One-20070121.iso
usage: mount_cd9660 [-begjrv] [-C charset] [-o options] [-s startsector]
                    special node


You need to specify where you want to mount the image, for example:

dhcppc0# loop.sh /home/mk/FC-One-20070121.iso /mnt

/bin/loop.sh: Permission denied.

... and You need to have rights to mount, You can use security/sudo for that, like that for example:

% sudo loop.sh FC-One-20070121.iso /mnt

Thanks a lot! Now I can mount *.iso files!
mk

There's a typo!

We are creating /dev/md0.

Yet it says

mount /dev/mnt0 /mnt
mount_cd9660 /dev/mnt0 /mnt

It should be

mount /dev/md0 /mnt
mount_cd9660 /dev/md0 /mnt