Date: Sat, 19 Jan 2019 12:52:28 +0300 From: Lev Serebryakov <lev@FreeBSD.org> To: Warner Losh <imp@bsdimp.com>, Emmanuel Vadot <manu@bidouilliste.com> Cc: "Rodney W. Grimes" <freebsd-rwg@pdx.rh.cn85.dnsmgr.net>, FreeBSD Current <freebsd-current@freebsd.org> Subject: Re: GPT boot has less features than legacy MBR-based one (Was: UEFI, loader.efi and /boot.config) Message-ID: <912985968.20190119125228@serebryakov.spb.ru> In-Reply-To: <CANCZdfpMWuBZGJ_KjDm8EOqG7CG815aLRgRx-2RPZ1yrQPgkKg@mail.gmail.com> References: <201901181935.x0IJZ4tX057034@pdx.rh.CN85.dnsmgr.net> <49056065-1e62-f0dc-c7a4-8c358de4266e@FreeBSD.org> <20190118221013.81c8729c7bf17038e1823b52@bidouilliste.com> <CANCZdfpMWuBZGJ_KjDm8EOqG7CG815aLRgRx-2RPZ1yrQPgkKg@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
Hello Warner, Saturday, January 19, 2019, 12:17:29 AM, you wrote: > Also most UEFI BIOSes I've used (which isn't a lot) allow one to choose > which BootXXXX variable to use to boot. Some will even create new BootXXXX > variables that they use when you choose a raw device to boot from. I have never seen such item in BIOS Setup. I've checked two MoBos now (one is Supermicro X9something and other is brand-new Goldmont-based Chinese MiniPC like Intel NUK): both have one knob in setup about boot type (Legacy/UEFI/Auto) and if UEFI is selected, Supermicro MoBo (but not Chinese one) could be booted to "UEFI Console" which is not documented anywhere. Ok, I've checked my desktop Asus Z170-A, but it is graphical and I could not find or understand anything in this home-rown UI with crazy-fast mouse. I have never seen documentation in MoBo manuals about such features, BTW. And, again, GPT/Legacy still left behind, and it could be very useful for small systems, as sometimes 4 partitions of MBR is not enough (2 code partitions + 1 config partition + 1 persistent data partition, and SOMETIMES, there is place for swap, for example, but MBR is full already). > But this whole thread tells me we need to rewrite the boot section of our handbook. Oh, yes, please! -- Best regards, Lev mailto:lev@FreeBSD.org
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?912985968.20190119125228>