Dd

dd allows to perform disk dumps in linux. Quite useful to create iso images from CDs or DVDs.

How to create an iso image of a cdrom?

> sudo dd if=/dev/cdrom of=cd.iso

How to mount an image?

> mkdir -p /mnt/isoimage
> mount -o loop -t iso9660 cd.iso /mnt/isoimage

How to unmount?

> umount -lf /mnt/isoimage

See also

• Mount
• mkisofs

External references

• dd on wikipedia
• Original source.