It may be looking for the fat16 UEFI boot sector and not finding it on the linux disk On Fri, 2 Oct 2020 at 20:16, Russell Coker via luv-main <luv-main@luv.asn.au> wrote:
On Friday, 2 October 2020 4:11:24 PM AEST Andrew Pam via luv-main wrote:
On 2/10/20 3:55 pm, Russell Coker via luv-main wrote:
Any ideas as to why a system might want to boot FreeDOS but not GRUB?
Check the BIOS settings - USB booting can emulate a floppy disk, a CD-ROM, an LS120 SuperDisk or a native USB mass storage device.
Thanks for the suggestion, the HP BIOS settings are awkward in regard to floppy/cd/hard drive which makes me lack confidence in them doing the right thing.
Here is the Linux boot device I'm trying to use:
Disk /dev/sdb: 3.8 GiB, 4026531840 bytes, 7864320 sectors Disk model: Flash Disk Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: dos Disk identifier: 0x00fe7504
Device Boot Start End Sectors Size Id Type /dev/sdb1 2048 6293503 6291456 3G 83 Linux
Here is the FreeDOS boot device. They both seem to be configured as hard drives.
Disk /dev/sdc: 7.5 GiB, 8054112256 bytes, 15730688 sectors Disk model: USB Disk Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: dos Disk identifier: 0x00000000
Device Boot Start End Sectors Size Id Type /dev/sdc1 * 63 63377 63315 30.9M 4 FAT16 <32M /dev/sdc2 63488 129023 65536 32M 4 FAT16 <32M
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