On Mon, May 25, 2020 at 05:19:23PM +0000, Mogens Jensen wrote: > On Friday, May 15, 2020 2:17 AM, Kevin O'Connor <ke...@koconnor.net> wrote: > > On Tue, May 12, 2020 at 03:39:58PM +0000, Mogens Jensen wrote: > > > I would expect that it should not matter that flash disk is inserted in > > > USB port, as long as no boot sector is present on the device. If this is > > > NOT correct behaviour, then what could be the problem here? > > > > Although that expectation is reasonable, it's not how a traditional > > BIOS works. One can select which hard drive is the "bootable" drive > > during the "boot menu" phase. That drive effectively becomes the "C:" > > drive and it can be booted from. However, if that drive is not > > bootable then no hard drive can be booted (as in practice it's only > > possible to boot from the "C:" drive on a BIOS). > > > > So, in short, use the boot menu to select the alternate drive (or the > > bootorder cbfs file). Don't expect an automatic search of bootable > > harddrives. > > I did a test with QEMU emulator version 4.2.0, which is using > SeaBIOS. Hard disk is configured as first boot device, but has > no boot sector: > > === > Booting from Hard Disk... > Boot failed: not a bootable disk > > Booting from Floppy... > Boot failed: could not read the boot disk > > Booting from DVD/CD... > === > > QEMU will then correctly boot the CD ISO image. This is EXACTLY > the behaviour I'm looking for. > > Can I configure coreboot/SeaBIOS so booting works in the same > way on my system?
Certainly. SeaBIOS supports booting from floppy or cdrom on a failure to boot from a harddrive (as do traditional bios). Your original query was on booting from a different harddrive, and that isn't something that a traditional bios (nor SeaBIOS) supports. -Kevin _______________________________________________ SeaBIOS mailing list -- seabios@seabios.org To unsubscribe send an email to seabios-le...@seabios.org
