On Tue, Dec 06, 2005 at 05:09:06PM +0000, antonio giulio wrote: > I have burned dvd isos (debian, knoppix) with k3b. k3b uses growisofs, but I > have not found particular options (I have used "Auto" and "DAO"). With > cdrecord I have burned cd-isos for FreeBSD (sorry I have missed it in prev > email) with -dao option. > > I make test with "md5sum /dev/cdrom" or "cat /dev/cdrom | md5sum".
That often doesn't work on linux due to block driver stupidity unless burned in dao mode and even then it might not work. > How Goswin has suggested I have compared isos on hard disk and cd/dvd like > this: > > "diff /dev/cdrom path/file.iso" and "cmp /dev/cdrom path/file.iso" but > nothing was returned. No different than the md5sum command given you can not reliably read from /dev/cdrom raw on linux due to block size issues and trying to read ahead in the kernel. > And how Len suggested I have used growisofs directly, but nothing is > changed. > > Is right my way? Simple way: mount -o loop image.iso /mnt/image mount /dev/cdrom /mnt/cdrom diff -ruN /mnt/image /mnt/cdrom That compares the file contents without any of the low level device issues. Len Sorensen -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
