cctalk Digest, Vol 53, Issue 11

[John Ball]

>>Most of the older PROM style systems had an issue booting from a cd drive. You can't just use any with them. >>Many people report that Plextor drives are some of the best and Toshiba drive are right behind. Don't forget >>also that the cd drive must be ID 4 and be set for 512 byte sectors (not 1024 or 2048). I personally have never >>tried booting my crimson with my 6.5 cd's but if you just use FX from an Irix 5.3 cd you should be fine.

>>
>>Is ID 4 essential?  I've read conflicting info re: required device IDs
>>for booting.  What is the expected behavior using a different ID?

ID 4 is not really essential but it is a preferred address. Just don't forget to set the drive for 512 byte sectors. That is a must.