[H-GEN] verifying Burnt CDs

[Matthew Taylor]

just checking if I have missed obvious method of checking CD burns.

I have been using the attached simple script, in short

burn iso image using cdrecord
mount cd
make iso image using mkisofs
check iso image md5sum against md5sum of original iso image.

another method I found below

mount burnt cd
df /mnt/cdrom
dd if=/dev/cdrom bs=2048 count=[number of blocks from above command] | 
md5sum

This should produce a md5sum to match the md5sum of the original iso image.

I could swear previous CD's burnt using this method validated OK, 
recently this does not appear to be the case, despite slower CD burn 
rates and various CD blanks in a new CD Burner.

then there's the 'linux mediacheck' option from the linux boot image.

but on the CD's I've produced I get a message informing me the CD does 
not include a md5sum for checking.

any ideas? what do others use for checking CD's against iso images?

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