Date: Fri, 25 Jan 2019 22:00:14 -0600 From: Kyle Evans <kevans@freebsd.org> To: Jonathan Chen <jonc@chen.org.nz> Cc: Karl Denninger <karl@denninger.net>, FreeBSD-STABLE Mailing List <freebsd-stable@freebsd.org> Subject: Re: Not sure if this is the correct place.... (laptop, dual-boot EFI) Message-ID: <CACNAnaFLEOucgRFvuukCoznCn7e4RyYSsdo1cRPGUWk9A6ToNg@mail.gmail.com> In-Reply-To: <CAJuc1zOaWhfDLKJUFPT7rFORP%2B4m4B5aTU769LK_aDkBOZWMDA@mail.gmail.com> References: <7391812a-a2ad-874a-80c9-5a871a29f680@denninger.net> <CAJuc1zOaWhfDLKJUFPT7rFORP%2B4m4B5aTU769LK_aDkBOZWMDA@mail.gmail.com>
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On Fri, Jan 25, 2019 at 6:30 PM Jonathan Chen <jonc@chen.org.nz> wrote: > > On Sat, 26 Jan 2019 at 13:00, Karl Denninger <karl@denninger.net> wrote: > [...] > > I'd like to repartition it to be able to dual boot it much as I do with > > my X220 (I wish I could ditch Windows entirely, but that is just not > > going to happen), but I'm not sure how to accomplish that in the EFI > > world -- or if it reasonably CAN be done in the EFI world. Fortunately > > the BIOS has an option to turn off secure boot (which I surmise from > > reading the Wiki FreeBSD doesn't yet support) but I still need a means > > to select from some reasonably-friendly way *what* to boot. > > The EFI partition is just a MS-DOS partition, and most EFI aware BIOS > will (by default) load /EFI/Boot/boot64.efi when starting up. On my > Dell Inspiron 17, I created /EFI/FreeBSD and copied FreeBSD's > /boot/loader.efi to /EFI/FreeBSD/boot64.efi. My laptop's BIOS setup > allowed me to specify a boot-entry to for \EFI\FreeBSD\boot64.efi. On > a cold start, I have to be quick to hit the F12 key, which then allows > me to specify whether to boot Windows or FreeBSD. I'm not sure how > Lenovo's BIOS setup works, but I'm pretty sure that it should have > something similar. > Adding a boot-entry can also be accomplished with efibootmgr. This is effectively what the installer in -CURRENT does, copying loader to \EFI\FreeBSD on the ESP and using efibootmgr to insert a "FreeBSD" entry for that loader and activating it.
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