On Wed, Mar 19, 2014 at 3:34 PM, Aleksandar Kuktin <[email protected]> > wrote: > > Returning back to the root of the problem, can you give a bit more > > light? > > > > If you have an USB with ext2 (or whatever), you can not boot a new > > BIOS, correct? If you have an USB with FAT32, and with the exact same > > filesystem (except ownership and permissions) that the USB with ext2 > > has, you can boot it? > System: > - mb: Intel Atom with ICH10R chipset > - disk: USB stick with MBR; a single etx4 partition (also have HDD > with the same config) > - grub 2.0 on mbr > - built LFS+BLFS 32bit > > Original status: > - On the old mb: > - I can boot from both USB stick and HDD > - on the same mb with updated BIOS version: > - I can only boot from HDD (SATA port) > - on the new BIOS with the same USB stick I can see grub menu, but > any attempt to boot results in error (see top of the thread) > > > The question being, can you make a USB bootable just by switching the > > filesystem? > As I understand, grub is capable of reading ext4 (menu is shown) > At this point I wonder what causes grub to fail... > > > And a thing I just came up with: does your ext2 USB have the "bootable" > > flag set on its boot partition? > I have ext4 with bootable flag (boots on working mb) > > Just to clarify another problem while trying to solve initial one: > there was a suggestion to switch to gpt with a separate /boot > partition formatted as ext2 without initrd, but I can't boot linux > even on Core2 pc without initrd if rootfs is mapped via UUID. > > Regards, > Alexey > > I suggest you read the earlier posts.
Richard
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