‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ On Friday, May 15, 2020 2:17 AM, Kevin O'Connor <[email protected]> wrote:
> On Tue, May 12, 2020 at 03:39:58PM +0000, Mogens Jensen wrote: > > > First posted this question to coreboot mailing list, but on second thought, > > I think this is the right place. > > I have experimentet with coreboot on my CompuLab Intense PC (Ivy Bridge) > > for some time, and I think everything is working now, with Intel ME > > disabled. Although, I have some troubles with boot selection. > > I'm currently running coreboot [4cea00a64] with default SeaBIOS payload > > [v1.13.0] and a bootorder file. The boot device search order is this: > > > > 1. USB 2.0 device > > 2. USB 3.0 device > > 3. SATA devices (in order: 2.5″ internal, mSATA, eSATA, FACE module) > > > > During testing I have been running the system from a USB 3.0 flash disk. > > This worked as expected and system would automatically select this device > > during boot/reboot. > > I then wanted to use the internal 2.5" SATA disk, so I installed an OS and > > confirmed it working by manually selecting the SATA disk in boot menu. I > > then removed boot sector from flash disk, reboot and expected that the > > system would now automatically boot from internal SATA disk, but this > > happened instead: > > === > > Booting from Hard Disk... Boot failed: not a bootable disk > > Booting from Floppy... Boot failed: not a bootable disk > > > > No bootable device. Retrying in 60 seconds. > > > > ============================================ > > > > Not sure what is going on with "Floppy". No such thing exists on the > > system. If I remove flash disk from USB port before power on, the system > > will boot correctly from internal SATA disk. Is this correct behaviour? > > 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. > > -Kevin 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? Thanks. Regards, Mogens Jensen _______________________________________________ SeaBIOS mailing list -- [email protected] To unsubscribe send an email to [email protected]
