Public bug reported:
I dual boot Xenial and OSX on a MacBook Air. I use rEFInd as my boot
loader to manage them. However, every time there's a grub update, grub
just silently overwrites my bootloader, which makes it so that I am
unable to boot into OSX.
Grub updates should NOT overwrite the default bootloader, period. At
the very least, it should halt installation and prompt the user with
something like:
It looks like grub is not your current bootloader. Do you wish to
replace your existing bootloader?
I installed rEFInd BEFORE I did the ubuntu install on this machine, so
it predates even the Xenial installer. Thus I should not have to re-
install rEFInd after every grub update.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: grub2-common 2.02~beta2-36ubuntu3.2
ProcVersionSignature: Ubuntu 4.4.0-36.55-generic 4.4.16
Uname: Linux 4.4.0-36-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CurrentDesktop: Unity
Date: Tue Sep 6 16:12:43 2016
InstallationDate: Installed on 2015-10-21 (321 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151020)
SourcePackage: grub2
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: grub2 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug xenial
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https://bugs.launchpad.net/bugs/1620812
Title:
grub updates silently overwrite my bootloader
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