Jóhann B. Guðmundsson <johannbg@xxxxxxxxx> writes: > On 30.6.2020 13:56, Igor Raits wrote: >> On Tue, 2020-06-30 at 13:34 +0000, Jóhann B. Guðmundsson wrote: >>> >>> Given Hans proposal [1] introduced systemd/grub2/Gnome upstream >>> changes it beg the question if now would not be the time to stop >>> supporting booting in legacy bios mode and move to uefi only >>> supported boot which has been available on any common intel based >>> x86 platform since atleast 2005. >>> >>> Now in 2017 Intel's technical marketing engineer Brian Richardson >>> revealed in a presentation that the company will require UEFI Class >>> 3 and above as in it would remove legacy BIOS support from its >>> client and datacenter platforms by 2020 and one might expect AMD to >>> follow Intel in this regard. >>> >>> So Intel platforms produced this year presumably will be unable to >>> run 32-bit operating systems, unable to use related software (at >>> least natively), and unable to use older hardware, such as RAID HBAs >>> (and therefore older hard drives that are connected to those HBAs), >>> network cards, and even graphics cards that lack UEFI-compatible >>> vBIOS (launched before 2012 – 2013) etc. >>> >>> This post is just to gather feed back why Fedora should still >>> continue to support legacy BIOS boot as opposed to stop supporting >>> it and potentially drop grub2 and use sd-boot instead. >>> >>> Share your thoughts and comments on how such move might affect you >>> so feedback can be collected for the future on why such a change >>> might be bad, how it might affect the distribution and scope of such >>> change can be determined for potential system wide proposal. >> >> I think there are many people still install OS in the legacy mode, >> but I don't really have numbers. One thing we should definitely do if >> we deprecate legacy BIOS is to properly warn users that still use >> this configuration, develop tooling for them if possible for >> migration and do not allow upgrades that will simply break their >> system. > > The use of legacy or uefi are changes that users have to manually > change themselves in their bios from manufactures default > settings. There is no tool that can do that for them or migrate those > settings however users should be able to change this for hardware > around 2010. > > The Installer would have to try to detect and make a choise sd-boot ( > If settings equall UEFI ) or grub2 ( If setting not equals UEFI ) > depending on it's results. > > As an example here's the BIOS/UEFI history for Apple hardware. > > 2012 and older models only support legacy BIOS Mode > > 2013-2014 models support both EFI and BIOS with the default setting > being set on BIOS > > 2015 and later models only support EFI > > Different manufacturers have different timelines and different default > settings but I think it's safe to presume from this year onwards they > will all drop the legacy support and default to UEFI. I don't think it contradicts your point that "this stuff is really complicated", but my desktop is a 2009/2010 MacPro 4,1 running Fedora booted using EFI. (I didn't ask it one way or the other - this is how anaconda installed it for me.) Thanks, --Robbie
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