Use BiBM to boot from GPT BIOS boot partition
Posted: Mon May 25, 2020 2:38 pm
Hi all,
Hope you are well. I haven't played around with my BiBM in years and now am trying to do something new and failing. Can you let me know how (and if!) it's possible?
I have a system which boots in Legacy mode (i.e. I don't use UEFI). I have BiBM installed on one disk with an EMBR (which is the primary boot disk, in terms of BIOS order) and typically, I only use it to boot to Windows 10, on a different disk which is configured as MBR.
I have now installed Fedora Linux on a 4TB on a third disk. That disk is configured as GPT. The Fedora installer has created the usual soup of Linux partitions (root, home, boot, etc.) but also has created a "BIOS boot partition" to enable GRUB2 to boot Fedora with Legacy boot, even though the disk is GPT.
If I change my boot order on system startup to boot from this 4TB drive, it works fine. Legacy boot loads GRUB2 and I select Fedora, no issues. I now want to boot that Fedora install from my BiBM menu.
If I use the Boot Edit menu in BiBM to add an entry for the Fedora disk and try to save it, I get an error message about the boot partition having to be registered in the MBR (or similar - apologies, I forgot to write down/snapshot the error). This is regardless of whether I select the overall disk, or the "GPT Reserved" first partition, to try and target with the boot menu entry. Examining the disk using "Partition Work" shows no partitions have the "bootable:yes" entry.
Any ideas what I am doing wrong? Apologies, my level of knowledge is low/old/rusty so the question may be a stupid one or badly explained. In short, I guess I want to use BiBM to chainload GRUB2 on the BIOS boot partition of my GPT drive.
Thanks
Mike.
Hope you are well. I haven't played around with my BiBM in years and now am trying to do something new and failing. Can you let me know how (and if!) it's possible?
I have a system which boots in Legacy mode (i.e. I don't use UEFI). I have BiBM installed on one disk with an EMBR (which is the primary boot disk, in terms of BIOS order) and typically, I only use it to boot to Windows 10, on a different disk which is configured as MBR.
I have now installed Fedora Linux on a 4TB on a third disk. That disk is configured as GPT. The Fedora installer has created the usual soup of Linux partitions (root, home, boot, etc.) but also has created a "BIOS boot partition" to enable GRUB2 to boot Fedora with Legacy boot, even though the disk is GPT.
If I change my boot order on system startup to boot from this 4TB drive, it works fine. Legacy boot loads GRUB2 and I select Fedora, no issues. I now want to boot that Fedora install from my BiBM menu.
If I use the Boot Edit menu in BiBM to add an entry for the Fedora disk and try to save it, I get an error message about the boot partition having to be registered in the MBR (or similar - apologies, I forgot to write down/snapshot the error). This is regardless of whether I select the overall disk, or the "GPT Reserved" first partition, to try and target with the boot menu entry. Examining the disk using "Partition Work" shows no partitions have the "bootable:yes" entry.
Any ideas what I am doing wrong? Apologies, my level of knowledge is low/old/rusty so the question may be a stupid one or badly explained. In short, I guess I want to use BiBM to chainload GRUB2 on the BIOS boot partition of my GPT drive.
Thanks
Mike.