Il 04/03/2012 19:49, Kevin O'Connor ha scritto:
The sg_modes command has a "-a" option to dump out all of the supported page codes
- it reports that none of the thumbdrives (tested 9) support page code = 4
- it reports that most of the thumbdrives (tested 9) support page code = 5
- it commented that page code 5 is obsolete
Thanks Dave. I appreciate your detailed analysis.
The call to cdb_mode_sense_geom() was only recently added. I'm inclined to just remove the call. Paolo, is there a use case where having the "physical" chs info is important? SeaBIOS should generate good "virtual" chs info regardless, and the underlying "physical" info is only exported in a couple of places.
MS-DOS doesn't boot if you do not export the physical chs. I can remove it, but it was the best testcase I had for SCSI support.
The simplest solution seems to be to look for page 4 support in page 0x3f.