[sclug] Trouble booting from DVDs - update

[Neil Haughton]

Tom
Thanks for the reply.
The drive claims to support both +R and -R and research tells me that there
is no physical difference between media  of each type although mine are
clearly labelled -R. So what determines the format to be used? There does
not appear to be a means of specifying this in Brasero, so I am a little
perplexed. I don't believe it is damaged media, several discs from several
sources having the same problem including mag discs that I have booted from
on other machines. So that leaves the brand new device, the cable or
something else as yet not defined as the problem. Looks like a two pipe
problem.

Neil
(from my mobile phone)
On Jul 27, 2013 5:19 PM, "Alex Butcher" <lug at assursys.co.uk> wrote:

> On Sat, 27 Jul 2013, Neil Haughton wrote:
>
>  I left some information out of my first post - here is the updated version
>>
>> I have a Debian Squeeze machine. I want to upgrade it to Wheezy, so I
>> tried
>>
>>> booting from the latest Linux User 'Live DVD' - no joy.
>>>
>>> I have had some trouble with my coaster devices so I ditched both of them
>>> and bought a new Samsung DVD Writer (mid-price, about ?25),
>>>
>>
> What model number? Have you tried Googling "$MODELNO jumpers" or "$MODELNO
> manual" or "$MODELNO installation"?
>
>  plugged it into the end of the cable attached to IDE1 channel.  I left the
>>
>>> master/slave/CS jumper at the position supplied (I guess master or CS -
>>> the device does not state what each position is).
>>>
>>> My machine sees it as /dev/sr0, which I would expect, with a symlink to
>>> it
>>> as /dev/cdrom.
>>>
>>> I read a couple of DVDs with the new drive, no problem, and burned a
>>> couple of CD-Rs, no problem. So then I tried to reboot from the Linux
>>> User
>>> DVD. This is what I got:
>>>
>>> Boot from ATAPI CDROM
>>> No Emulation
>>>
>>> ISOLINUX 4.01 blah blah....: Disk Error 80, AX=4293
>>>
>>> Oh dear. Suspecting a faulty DVD I rebooted to my normal system and
>>> downloaded the netinstall CD image from the Debian mirrors, and using
>>> Brasero burned that to a DVD-R disk.
>>>
>>
> Try verifying the checksum of the ISO file you've downloaded against the
> checksum on the server you downloaded it from, and the ISO file against the
> burnt disc.
>
> Also, DVD+R are more reliable for data (but DVD-R is more compatible,
> especially for video discs in random DVD player appliances).
>
> " In addition, DVD+R(W) has a more robust error management system than
> DVD-R(W), allowing for more accurate burning to media, independent of the
> quality of the media. The practical upshot is that a DVD+R writer is able
> to
> locate data on the disc to byte accuracy whereas DVD-R is incapable of such
> precision."
>
> <http://en.wikipedia.org/wiki/**DVD%2BR<http://en.wikipedia.org/wiki/DVD%2BR>
> >
>
>  Then I tried booting from that:
>>
>>>
>>> Boot from ATAPI CDROM
>>> No Emulation
>>>
>>>    EDD error 8000 reading sector 34940 drive 9F
>>>
>>
> Google says corrupted ISO or damaged media. Or intermittently faulty drive
> or (more likely) cable, I suppose...
>
> HTH,
> Alex