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Instructions for creating a loopback mount, so you can access
disk image files as normal directories under the host OS.
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NOTE: You will likely have to be root to execute the following commands.
NOTE: DO NOT try to access the disk image file with a loopback mount
and plex86 at the same time!!!
Hard Disk Image Files:
The very first track is used for paritition info. So you
have to let the loopback know to skip it. Look at the
'spt=' option for the 'diskc' clause in your conf file. For example:
bochs-opt diskc: file=../../483M.NT40, cyl=1024, heads=15, spt=63
^^
...uses 63 sectors per track. So one track is (63 * 512bytes-per-sector),
or 32256 bytes. Pass this info to losetup, along with the loopback
device and directory mount point. You will have to create the directory
mount point if it doesn't already exist, with 'mkdir'.
root# mkdir /mnt/winnt # If not created already
root# losetup -o 32256 /dev/loop0 <path-here>/483M.NT40
root# mount /dev/loop0 /mnt/winnt
Now you can use '/mnt/winnt' as a normal Unix directory. When
you are done, undo the process:
root# umount /dev/loop0
root# losetup -d /dev/loop0
Floppy Disk Image Files:
This is a more simple case than for hard disk images. You don't
need to specify an offset to losetup, because there is no partition
table.
root# mkdir /mnt/msdos # If not created already
root# losetup /dev/loop0 <path-here>/1.44_image
root# mount /dev/loop0 /mnt/msdos
Now you can use '/mnt/msdos' as a normal Unix directory. When
you are done, undo the process:
root# umount /dev/loop0
root# losetup -d /dev/loop0