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Linux creating CD-ROM ISO image

Posted by Vivek Gite [Last updated: May 18, 2006]

dd is a perfect tool for copy a file, converting and formatting according to the operands. It can create exact CD-ROM ISO image.

This is useful for making backup as well as for hard drive installations require a working the use of ISO images.

How do I use dd command to create an ISO image?

Put CD into CDROM

Do not mount CD. Verify if cd is mounted or not with mount command:

# mount

If cd was mouted automatically unmout it with umount command:

# umount /dev/cdrom

OR

# umount /mnt/cdrom

Create CD-ROM ISO image with dd command:

# dd if=/dev/cdrom of=/tmp/cdimg1.iso

Where,

Now you can use cdimg1.iso for hard disk installation or as a backup copy of cd. Please note that dd command is standard UNIX command and you should able to create backup/iso image under any UNIX like operating system.

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Discussion on This Article:

  1. Aatch Says:

    This has cemented my love of *nix. I already knew that you could mount disk images using mount, but the using of dd to make a disk image. That was the best bit. I have the need to make alot of images, for various reasons. And its faster than on windows. (In my experience anyway).

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