On Thu, Jun 21, 2018, at 3:30 AM, Gerd Hoffmann wrote: > Hi, > > > And in my opinion, it's not simple to say: OK if you have this size > > ESP to start, you get this layout, and if it's bigger you get this > > other layout, and if it's BIOS you have this 3rd layout.
Chris, I have to say I'm glad you're part of the Fedora community - your input on this topic has been very valuable! > Well, for fresh installs[1] there is no reason to have efi and bios use > different layouts. You can just do this: When you say "install" it really matters to say install of *what* - a desktop system, a physical server, a VM, etc. From my perspective (Fedora CoreOS developer) that straddles both physical and cloud for the server case, the problem is that the virtualized case, and in particular public cloud, and really specifically EC2 - no one really cares about EFI to boot their VMs. Except a special case here is "disaster recovery" scenarios where a physical server is imaged and uploaded to the cloud as a VM, and the topic of UEFI does come up there. Apparently most implementations of this convert back to BIOS. Don't get me wrong, I agree with Lennart (indirectly) in that it is kind of crazy how influentual the "Windows dual boot for desktop" case is on everything Fedora, which also includes physical servers. But the virtualized case also pushes at this from the other angle. > [root@ibm-p8-kvm-03-guest-02 ~]# fdisk -l /dev/sda > Disk /dev/sda: 4 GiB, 4294967296 bytes, 8388608 sectors > Units: sectors of 1 * 512 = 512 bytes > Sector size (logical/physical): 512 bytes / 512 bytes > I/O size (minimum/optimal): 512 bytes / 512 bytes > Disklabel type: gpt > Disk identifier: 92035660-BEFD-45D5-9883-B2B91EC429D1 > > Device Start End Sectors Size Type > /dev/sda1 2048 10239 8192 4M BIOS boot > /dev/sda2 10240 1058815 1048576 512M EFI System I wouldn't *oppose* that; in fact if you (or someone else) wanted to push for that with e.g. Fedora CoreOS, I'd be happy to discuss it. But it's not like it has a truly compelling advantage over what we ship today - it'd just be *another* weird variant of things in the end right? And the fact that FAT has no ability to do atomic replacement bothers me a lot. (A wrinkle here is that ostree implements an atomic swap of /boot/loader - you can today boot FAH/Silverblue and just ls -al /boot to see it) _______________________________________________ devel mailing list -- devel@lists.fedoraproject.org To unsubscribe send an email to devel-le...@lists.fedoraproject.org Fedora Code of Conduct: https://getfedora.org/code-of-conduct.html List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org/message/MNRANIETDFYCPU5RN3MEW65W6PFSI7C2/
