Re: [Thinkpad] Booting a Thinkpad x30 from an external cd

On Sat, Feb 18, 2006 at 10:43:59PM +0000, John Maclean wrote:
> I've burned some live Linux CD's with an external USB cd writer from an
> X30. Burned with
> cdrecord -pad -dao -v -eject -data ~/path/to/foo.iso

Did you get any messages about fifo empty?

cdrecord uses a memory buffer in addition to the buffer in the drive.
By default it is 4MB, which should be enough. You might add the option
fs=8m

You might also try the option burnfree

The man page suggests speed=0 if speed=2 has trouble

The X30 graphics uses system memory. You might try in text mode ( without
X windows running)

I don't like USB for recording CD's but even USB 1 should work with
speed=4 or even speed=6

FWIW, I never specify -dao or -data, since they are defaults.

You can use -dummy to try things out so that you don't make a coaster
until you figure how to avoid buffer underruns.

You can mount the iso file as a file system by:

mount -o loop -t iso9660 ~/path/to/foo.iso /mnt

Then, if your CD is mounted as /cdrom, you can compare the entire CD with:

diff -r /mnt /cdrom

> I've not been able to actually boot from anything today. Even tried
> speed=2. During the burn process got messages of buffer underruns :/
> Anyone came across this before? If so what have you done to over come
> this?
>
> Getting messages of unable to mount /[can't remember] every time that I
> try to boot.
>

-- 
Embedded spaces in file names are evil.
John P. Serafin  |  Operating a bicycle is more like driving than riding.
jps at pobox com |  Operating an automobile is more like riding than driving.
_______________________________________________
Thinkpad mailing list
Thinkpad@stderr.org
http://stderr.org/cgi-bin/mailman/listinfo/thinkpad