[  > Recently I noticed the SPARC boot/disklabel support in cdrecord, and I
[  > wondered whether the next68k disklabel could also exist on an ISO CD.
[  > But it seems the NeXT label starts at the beginning of the disk
[  > (LABELSECTOR == LABELOFFSET == 0), so it probably won't fit on an ISO
[  > CD.

Could an answer be found by examining the NeXT install CDs at the block level?
I believe that those are Rockridge - isn't that ISO compatible?

[  Well, now that I think about it, if NeXT required use of a floppy to run
[  NeXTSTEP from a CD-ROM, then it seems unlikely we'll easily figure it out
[  either.

I may not remember this precisely, but the floppy was only needed on older  
systems because the firmware would not boot from the 2048 byte block devices  
-or- perhaps it was because a CD-ROM is identified as a different type of SCSI  
device, and would normally be ignored as a boot device (just like you cannot  
boot from a SCSI scanner).  I believe that the newer NeXT's, especially the  
later Turbo machines, would boot from CD-ROM without the floppy.

Brian