Hi, > I'm not sure what a SCSI rom would do with a CD drive. My guess is > that it wouldn't map it to a BIOS visible drive id at all, as there's > no way to select an id with any assurance that it wont conflict with > one chosen by the BIOS or another rom. If QEMU can simulate this (and > someone knows the command-line to do such) it would be an interesting > test to see what the rom does.
The lsi rom (8xx_64.rom) seems to prioritize cdroms. Maybe that is something configurable in the option rom setup. When a cdrom drive with a bootable cd inserted is present the boot looks like this: ======================================================================= SeaBIOS (version 0.6.1.2-20120105_124702-rincewind.home.kraxel.org) iPXE v1.0.0-591-g7aee315 iPXE (http://ipxe.org) 00:03.0 CB00 PCI2.10 PnP PMM+1FFD9190+1FF99190 CB00 LSI Logic Corp. Symbios SDMS (TM) V4.0 PCI SCSI BIOS, PCI Rev. 2.0, 2.1 Copyright 1995-2001 LSI Logic Corp. PCI-4.19.00 HBA ID LUN VENDOR PRODUCT REV SYNC WIDE CYL/ HD/SEC --- -- --- -------- ---------------- ---- ----- ---- ------------ 0 0 0 QEMU QEMU HARDDISK 1.0. NO 8 1024/255/63 0 1 0 QEMU QEMU HARDDISK 1.0. NO 8 1008/ 33/63 0 4 0 QEMU QEMU CD-ROM 1.0. NO 8 0 7 0 LSILogic 53C895A 0000 10.0 8 LSI Logic Corp. PCI boot ROM successfully installed! Press F12 for boot menu. Select boot device: 1. #28 ID04 LUN0 QEMU QEMU CD-ROM 2. USB Drive USB Flash Disk 2.00 3. iPXE (PCI 00:03.0) ======================================================================= whereas without bootable cd (drive still present but no disk inserted) the boot menu looks like this: ======================================================================= Select boot device: 1. #28 ID00 LUN0 QEMU QEMU HARDDISK 2. USB Drive USB Flash Disk 2.00 3. iPXE (PCI 00:03.0) 4. #28 ID01 LUN0 QEMU QEMU HARDDISK ======================================================================= cheers, Gerd
