Burning CDs

[Harald Hoyer]

John Reiser wrote:
>>Should I be able to burn CDs?
> 
> 
> Burning works properly [in general.]
> 
> 
>>I'm trying to burn the FC5t2 ISOs and I've tried with GNOME and cdrecord
>>but they're failing the sha1sum test.
> 
> 
> The burning probably worked.  Almost certainly, the failure is in
> the verifying.
> 
> 
>>Advice and assistance gratefully received,
> 
> 
> Find the Linux kernel IDE maintainer, and shoot him.  Literally.
> Then perhaps someone else will fix the kernel bug [on the READ side]
> that causes this misery.  It's been there for over TWO YEARS.
> https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=131858
> https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=106685
> ide-scsi work[ed], but the maintainer of the ide driver
> just cannot bear the thought of fixing this bug.
> Yes, the specification of CD-ROM {media + hardware} allows too
> much room to create the problem (end-of-recorded-data cannot
> be detected reliably to a precision of one 2KB sector),
> but ide-scsi dealt with it, and the current ide driver does not.
> 
> Instead of using sha1sum to verify, use
>   dd if=/dev/cdrom bs=2k  |  cmp - FC5-test1-i386-discN.iso
> and check the return code from cmp only, ignoring any complaints
> from dd.
> 

Use isosize to determine the number of bytes to read and only cmp with those... also make sure you burned the 
CD with -dao ...