[Bug 221674] Installer can't back up when it finds MBR

bugzilla-noreply at freebsd.org bugzilla-noreply at freebsd.org
Sun Aug 20 16:52:08 UTC 2017


https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=221674

            Bug ID: 221674
           Summary: Installer can't back up when it finds MBR
           Product: Base System
           Version: 11.1-RELEASE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: conf
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: scratch65535 at att.net

Transitional motherboards allow a switch to be set for "EFI", "legacy", or
"both".  The factory setting (on the ones with which I'm familiar, anyway) is
"both".

When dual-booting with an o/s that uses MBR, e.g. XP or W7, the installer will
default to EFI without looking to see whether there's already an MBR part on
the disc.  

Then, when the human refuses to let it have the whole disc, it doesn't know how
to back up to go down the MBR path.  It just hangs in a functionally-choiceless
loop, requiring the human to choose between whole-disc and partition, but
rejecting partition as a choice.  

It should either know how to back up, or know how to avoid getting into that
situation in the first place.

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