My name is Philipp C. Heckel and I write about nerdy things.
For my job, I work with file systems and image files a lot: Every day, we mess with Grub, the partition tables (MBR/GPT), EFI and BIOS systems, etc. So pretty much every day, I need to boot some image file or investigate why some image didn’t boot.
This (super duper) short post shows how to boot image files using straight kvm commands.
Good old Master Boot Record (MBR) unfortunately cannot address anything beyond 2TB, so partitioning large disks and making them bootable is impossible using MBR. The GUID Partition Table (GPT) solves this problem: It supports disks up to 16EB. However, installing grub does not work without a special BIOS boot partition. If you also want to support booting the same system via UEFI, another partition, the EFI System Partition (ESP), is necessary.
This should post shows you how to partition a disk with GPT and make a bootable Linux system via BIOS/Legacy and UEFI.
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