[Lvlug] verifying copied cd's

[Randy Kramer]

Linc Fessenden wrote:
> Yup.. Use md5sum.  Slap your cdrom in the drive and *without mounting it*
> run md5sum on the block device, ie /dev/hdc or /dev/cdrom, or whatever it
> is on your system, then run it again on your copy (be it ISO, or
> another physical cd or whatever.... For instance on my system I would get
> this result on a certain cd....:
> sh-2.05$ md5sum /dev/cdrom
> de1230b7817c882c0be9bb01debe3fda  /dev/cdrom
> sh-2.05$ md5sum cdcopy.iso
> de1230b7817c882c0be9bb01debe3fda  cdcopy.iso
> sh-2.05$

Ahh, wonderful!!

Linc -- maybe you can confirm that the results you get by doing this
will not (and should not) match an md5sum run on the iso before burning?

Randy Kramer