Date: Sun, 20 Aug 2017 21:27:17 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-sysinstall@FreeBSD.org Subject: [Bug 221674] Installer can't back up when it finds MBR Message-ID: <bug-221674-2920-hkvrfRleuh@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-221674-2920@https.bugs.freebsd.org/bugzilla/> References: <bug-221674-2920@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D221674 Nathan Whitehorn <nwhitehorn@FreeBSD.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |nwhitehorn@FreeBSD.org Status|New |Open --- Comment #1 from Nathan Whitehorn <nwhitehorn@FreeBSD.org> --- There is actually no way around this problem in the installer: FreeBSD can't boot EFI systems from MBR disks, so, as far as the installer is concerned, = the system is unbootable without reformatting the disk as GPT. There are two workarounds available: 1. Booting the installer using CSM (BIOS compatibility mode). It decides wh= at is and is not bootable based on how it was booted (an EFI-booted system can surely be booted by EFI and a BIOS-booted system can surely be booted with = the BIOS). If you start the system this way, you can install onto an existing M= BR disk and get the right boot loaders. 2. Set up partitions by hand using the manual editor. The installer will complain that the resulting result will be unbootable since it doesn't know= if the system supports CSM booting, but it will let you do it if you press OK. We should add choice (1) to the documentation and improve the error message. --=20 You are receiving this mail because: You are the assignee for the bug.=
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