Re: [gentoo-user] having problems getting burned cds to work

[Mick <michaelkintzios@gmail.com>]

[-- Attachment #1: Type: Text/Plain, Size: 1274 bytes --]

On Tuesday 26 May 2015 13:21:56 Neil Bothwick wrote:
> On Tue, 26 May 2015 06:17:03 -0400, covici@ccs.covici.com wrote:
> > > What does "isoinfo -d -i /path/to/file.iso" say about it?
> > 
> > No, udf says no partition or some such,  and iso-info gives
> > 
> > ISO 9660 image: /audio/grml/grml64-full_2014.11.iso
> > Preparer    : XORRISO-1.2.2 2012.04.02.133001, LIBISOBURN-1.2.2,
> > LIBISOFS-1.2.2, LIBBURN-1.2.2
> > Publisher   : grml-live | grml.org
> > Volume      : grml64-full 2014.11
> > Joliet Level: 3
> 
> isoinfo, not iso-info. The former gives more information.

Also, confirm that a)the downloaded iso file and b)the CD is not corrupt.  For 
the iso file run:

 sha1sum somefile.iso 

and check that it matches the sha1 checksum published at the website.

For the CD run:

 ls -l somefile.iso

to find how big the is file, for example 650,000,000 bytes.  Then run:

 dd if=/dev/sr0 bs=2048 count=650000000 | sha1sum

(This is necessary to exclude any code after the end of the iso content which 
the cdrecord will write on the CD to close the recording session).

Even if a sha1 or md5 hash is not available from the website, you can at least 
compare the two hashes between the iso file and the CD.

-- 
Regards,
Mick

[-- Attachment #2: This is a digitally signed message part. --]
[-- Type: application/pgp-signature, Size: 473 bytes --]