On Tue, 2020-07-07 at 06:02 +0000, Zbigniew Jędrzejewski-Szmek wrote: > On Mon, Jul 06, 2020 at 08:06:05PM -0600, Chris Murphy wrote: > > On Mon, Jul 6, 2020 at 4:48 PM Gerald Henriksen <ghenriks@xxxxxxxxx> wrote: > > > So if one has a spare partition to play with btrfs, is there an easy > > > way to install a second copy of Fedora without having the /boot/efi/ > > > entries overwrite the existing Fedora installation? Or fix it to have > > > 2 separate entries after the fact? > > > > It's possible but has challenges. Separate ESP's you'll need to either > > (a) use the firmware's built-in boot manager to choose what will > > probably appear to be identically named Fedora's (b) add new NVRAM > > entries, and names, and switch between them before reboot by using > > efibootmgr --bootorder or --bootnext. > > > > Another option is shared ESP and /boot but my vague recollection is > > some things go away. For sure /boot/efi/EFI/fedora is replaced, and > > then possibly /boot/loader/entries are replaced. But that might be > > easier to deal with than the above, and more efficient. > > This is so sad. Boot Loader Specification was explicitly designed to > support parallel installations on a single ESP. (The case of different > systems was the goal, but the general logic works for different > installations of the same system as well.) BLS entries are stored > underneath $ESP/<machine-id>, so different Fedora installations which > have different machine-id numbers simply don't conflict. sd-boot just > displays the combined list. If two entries happen to be *exactly* the > same — same os name, same os version, same kernel version — it'll use > the machine-id in the entry title to disambiguate them to the user (*). > > There is really no reason for this not to work. If are considering > separate ESPs and efibootmgr to switch between them then something > went rather wrong somewhere. I can't speak for Chris, but I was honestly just gaming it out in my head, trying to think how I'd try it if I was going to do it. I've never actually tried it myself. -- Adam Williamson Fedora QA Community Monkey IRC: adamw | Twitter: AdamW_Fedora | XMPP: adamw AT happyassassin . net http://www.happyassassin.net _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx
