Our standard Linux images place the root filesystem in the first
partition. The bootloader (typically grub) must also be installed to
We have two primary standard Linux image types. The newest are GPT-based, dual BIOS/UEFI-bootable (https://gitlab.flux.utah.edu/emulab/emulab-devel/-/wikis/Dual-boot-UEFI-BIOS-Images), and place the rootfs in the 3rd partition. Older BIOS bootable-only images have an MBR partition table, and place the rootfs in the 1st partition.
Our newer dual BIOS/UEFI-bootable images install both a UEFI loader in the EFI System Partition (GPT partition 1), and a grub loader in the MBR (note also the presence of the BIOS boot partition, GPT partition 2). Older BIOS-bootable images require the bootloader (typically grub) must also be installed to
the first partition, *not* to the MBR.
You can list the detected filesystems and non-empty partitions by
