Le 14/05/2017 à 11:44, John Frankish a écrit :
I've made a couple of dual legacy-bios/uefi boot usb sticks using grub-2.00.
Both of the usb sticks will uefi boot linux, but there appears to be a problem
with legacy-bios boot of linux.
One of the usb sticks gives an "invalid partition table!" error
What displays the message ? GRUB or the BIOS firmware ? Do you get the
GRUB rescue prompt ?
Some BIOS firmwares require that a primary partition has the boot flag.
$ fdisk -l /dev/sdb
Disk /dev/sdb: 62.2 GB, 62209916928 bytes
118 heads, 22 sectors/track, 46804 cylinders
Units = cylinders of 2596 * 512 = 1329152 bytes
Device Boot Start End Blocks Id System
/dev/sdb1 2 46000 59706702 83 Linux
/dev/sdb2 46001 46804 1043592 ef EFI (FAT-12/16/32)
This looks like a very old version of fdisk. Cylinders are obsolete. Add
-u to use sectors as unit instead.
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