Manipulate .ISO files in Linux?????

Garrett_80 · 12-04-2004, 03:47 PM

Hello,
I was wondering if there is a program to manipulate .ISO image files.
I can't find a way to open and add/remove files from it. I'm interested in functionality similar
to such provided by MagicISO and UltraISO for Windows.

mcleodnine · 12-04-2004, 03:59 PM

Try something like

Code:

mount my_cd_image.iso /mnt/target -t iso9660 -o loop=/dev/loop0

Now you can see what's on the image with 'ls /mnt/target'

This is a read-only filesystem, so if you want to edit files in the structure you'll want to copy everything in the mount point to a 'real' direcrtory.

When you're ready to create a new .iso you can use

Code:

mkisofs -o /home/foo/mynewoffice.iso -R -J /path/to/real/files

fredvej · 12-15-2004, 09:30 AM

Allrightythen :-)

Suppose you have an iso-image of a bootable DVD , how do you make an edited copy that can be booted ?

Example : SuSE 9.2 comes on a bootable DVD with more data than can fit on a single layer DVD. I want to make an ISO-file without the 64 bit stuff , so that I can make a bootable single-layered DVD with a 32 bit installation.

The steps to do so would be like your example

1) extract the ISO-image from the DVD to the harddisk. (which tools do you use ?)

2) mount the ISO-image as you wrote

3) copy all the stuff I want to a read/write directory on the harddisk

4) here's the tricky part - make a new ISO-image with the boot sector and whatnot from the original ISO image and the directory structure from step 3.

Which tools do I use in step 4 and how ?

Best regards
Freddy

kevinalm · 12-15-2004, 09:53 AM

Re mounting the .iso.

Specifying the fstype (-t iso9660) is _usually_ unnecessary. Mount almost always autodetects fstype. Also, specifying the actual loop dev (/dev/loop0) could cause problems if that device is already in use. If you simply do:

mount my_isofile.iso /path/to/mountpoint -o loop

then the first _available_ loop device (loop0-loop7) is allocated.

As to No. 4, that depends on the boot method (ie., grub, el torrito floppy emu, isolinux, etc.) being used by the original .iso image. I like isolinux myself. The short answer is that mkisofs has options that can make the resulting cd bootable. You might want to grab the isolinux tarball (or at least the docs) and also RIP (Rescue Is Possible) docs. They have some good examples. Iirc there are some ldp Howto's. And of course man mkisofs.

Regards,
Kevin