[rescue] CDROM 512-byte boot questions

[Jonathan Sturges]

Hi,
Nice summary, your understanding is correct.  Some small additions:

*  Some OSes -- Solaris2, I'm fairly sure, maybe later SunOS? -- the SCSI drivers can issue the block size change command when the OS is running (or are able to handle the 2k block size).
*  OBP 3.x can issue the block change command too, IIRC; it's really OPB 2.x and prior that have the hard requirement of a 512-byte block requirement for booting.
*  Besides Plextor, most Panasonic, Toshiba and Pioneer drives have jumperable block sizes.

HTH,
Jonathan