Deploying a Dual-Boot Multi-Disk Image¶

If you create a Multi-Disk image with a dual boot configuration, the efi
boot entries will not be maintained automatically when deployed to
different hardware

To Fix this you should create a post-install script to handle it

Post-Download Script¶

Post-download scripts live on the FOG server at /images/postdownloadscripts/.

You need to use efibootmgr in a post-download script to configure the EFI boot
entries and maintain your dual-boot config. This is an example of a line in a
post-download script that adds a Debian boot entry:

efibootmgr -c -d /dev/nvme0n1 -p 1 -L "Debian" -l "\EFI\debian\shimx64.efi"

For what each flag means, how to inspect and reorder entries, and how to wire the
script into fog.postdownload, see
Managing UEFI Boot Entries (efibootmgr) and
Post Download Scripts.