Thursday, July 22, 2010

Creating ISO Image Using DD Command

First, put the CD/DVD you want to make image into your optical drive, do not mount that CD/DVD.

If it was mounted automatically, unmount it with this command:
# umount /[mount]/[directory]

Then, do this command to create your ISO:
# dd if=/dev/cdrom of=/tmp/[isoname].iso
  • if=/dev/cdrom is the source
  • of=/tmp/[isoname].iso is the filename of the ISO you create
Or you could use the long option:
# dd if= of= bs= skip=< > seek=< > conv= count=< >
for bs (byte size), usually some power of 2, not less than 512 bytes, but can be any reasonable number (512, 1024, 2048, 4096, 8192, 16384)

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