cdrecord and knopix revisited

cdrecord and knopix revisited

[Shaun Oliver]

here's the output from cdrecord when I attempt to do a dummy burn
cdrecord: WARNING: Data may not fit on current disk.
cdrecord: Notice: Overburning active. Trying to write more than the 
official disk capacity.
Starting to write CD/DVD at speed 4 in dummy SAO mode for single 
session.
Last chance to quit, starting dummy write    0 seconds. Operation 
starts.
cdrecord: WARNING: Drive returns wrong startsec (0) using -150
Track 01: Total bytes read/written: 751005696/751005696 (366702 
sectors).
cdrecord: Input/output error. flush cache: scsi sendcmd: no error
CDB:  35 00 00 00 00 00 00 00 00 00
status: 0x2 (CHECK CONDITION)
Sense Bytes: 71 00 03 00 00 00 00 0C 00 00 00 00 0C 00 00 00
Sense Key: 0x3 Medium Error, deferred error, Segment 0
Sense Code: 0x0C Qual 0x00 (write error) Fru 0x0
Sense flags: Blk 0 (not valid)
cmd finished after 10.493s timeout 200s
Trouble flushing the cache
does this mean it would not write properly or does it mean it wrote ok 
but providing me some warnings to take into consideration as in use at 
your own risk etc.
thanks in advance.

-- 
Shaun Oliver


"I refuse to have a battle of wits with an unarmed person."
email: shaun.oliver@optusnet.com.au
WEB: http://blindman.homelinux.org/~blindman/
IRC: irc.awesomechat.net:6666
IRCNICK: blindman

Re: cdrecord and knopix revisited

[David Csercsics]

>here's the output from cdrecord when I attempt to do a dummy burn
<snip>
>does this mean it would not write properly or does it mean it wrote ok 
>but providing me some warnings to take into consideration as in use at 
>your own risk etc.


This means that the disc would write OK but it would have trouble
fixating the disc so you'd end up with a coaster probably. I did
manage to overburn the knoppix image with a command like:
cdrecord -v dev=1,0,0 -dao driveropts=burnfree -overburn  -data knoppix.iso
You'll have to experiment with the supported modes of your drive to
see which one works correctly. Mine only supports overburning in dao
mode but yours may be different. Gotta love the -dummy option. If
your burner doesn't support burnfree you're probably not  going to
be able to overburn the knoppix image because with my writer at least
it used burnfree about 4 times or so.