Simultaneous multiple CD burning

[Alisdair McDiarmid <alisdair@wasters.org>]

Is it possible to start several processes virtually
simultaneously?

I'm attempting to write four CDs simultaneously, using four Yamaha
6416 CD-RWs attached to an Adaptec 2940 SCSI card (reading from an
IDE hard disk, though). If I use:

cdrdao -d 0,2,0 cd.toc &
cdrdao -d 0,3,0 cd.toc &
cdrdao -d 0,4,0 cd.toc &
cdrdao -d 0,5,0 cd.toc &

to write the discs, I get buffer underruns (even in simulation). I
think this may be due to the tasks starting at different times
(there appears to be a two-second pause between each process
running); the pause may be resetting the SCSI bus.

Is there any reason why this shouldn't work in principle? Is there
something else I'm missing?

Thanks in advance for your help,
-- 
alisdair mcdiarmid                            alisdair@wasters.org
[                                                                ]