Dual boot. Ubuntu update removes Debian GRUB.

From	"Stefan.schultz19.5.1991" <stefan.schultz19.5.1991@protonmail.com>
Newsgroups	linux.debian.user
Subject	Dual boot. Ubuntu update removes Debian GRUB.
Date	2016-09-01 21:00 +0200
Message-ID	<scFnr-5wI-9@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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Dual boot. Ubuntu update removes Debian GRUB.

Hello Debian support,

Last week I installed a few updates to Ubuntu 14.04. It installed the updates and then froze whilst installing Ununtu's grub. After the re-boot, Ubuntu was the only choice of O/S. No sign of Debian.

After a few hours I finally got Debian recovery to reinstall the Grub on the MBR of the SSD.

Some notes.

128GB SSD /dev/sda (GRUB finally reinstalled here)

Partions

60GB Ubuntu /dev/sda1
4GB Ubuntu swap /dev/sda8
54GB Debian 'Jessie' /dev/sda7 (unlocked)
6GB Debian swap /dev/sda6 (unlocked)

GRUB

4GB Debian GRUB /dev/sda5 (will not boot from this)
Ubuntu boot loader is installed here too.

Encrypted partitions

54GB Debian 'Jessie' /dev/mapper/sda7_crypt
6GB Debian swap /dev/mapper/sda6_crypt

TWO QUESTIONS.

1/ Can anybody explain why the Ubuntu update deleted/removed the Debian GRUB?

2/ Is there a Debian approved GRUB boot customizer? I can't find one mentioned anywhere.

Is it possible to resolve this? This would be a pain in the butt, if I had to do this at every Ubuntu update!

Thanks for your help.

Stefan


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Dual boot. Ubuntu update removes Debian GRUB. "Stefan.schultz19.5.1991" <stefan.schultz19.5.1991@protonmail.com> - 2016-09-01 21:00 +0200
  Re: Dual boot. Ubuntu update removes Debian GRUB. Brian <ad44@cityscape.co.uk> - 2016-09-01 21:50 +0200
  Re: Dual boot. Ubuntu update removes Debian GRUB. Felix Miata <mrmazda@earthlink.net> - 2016-09-01 21:50 +0200

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