Manage Linux ISO image files.

Mount ISO image file:
https://help.ubuntu.com/community/MountIso
~/temp$ mkdir test

~/temp$ sudo mount -o loop cd.iso ./test/

~/temp$ sudo umount ./test

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Create ISO image from DVD/CD or directory:

Reference to:
http://ubuntuforums.org/archive/index.php/t-6509.html
To make an ISO from your CD/DVD, place the media in your drive but do not mount

it. If it automounts, unmount it.

dd if=/dev/dvd of=dvd.iso # for dvd

dd if=/dev/cdrom of=cd.iso # for cdrom

dd if=/dev/scd0 of=cd.iso # if cdrom is scsi

To make an ISO from files on your hard drive, create a directory which holds

the files you want. Then use the mkisofs command.

mkisofs -o /tmp/cd.iso /tmp/directory/

This results in a file called cd.iso in folder /tmp which contains all the

files and directories in /tmp/directory/.

For more info, see the man pages for mkisofs, losetup, and dd, or see the

CD-Writing-HOWTO at http://www.tldp.org.
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Create ISO images with genisoimage

~$ genisoimage -o test.iso ./test/

Note: genisoimage cannot create ISO file from mounted DVD folder directly.

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http://tldp.org/HOWTO/CD-Writing-HOWTO.html