Lubuntu alternate Installation wrongly puts Grub in MBR of USB Pendrive

Bug #1426219 reported by turtlepurple on 2015-02-27
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
debian-installer (Ubuntu)
Undecided
Unassigned

Bug Description

Lubuntu 14.04.1 alternate i386 installer will put Grub in the MBR of the usb-drive containing the installation-iso if you select either
"Install" or "expert install" (in unetbootin menu). The Pendrive is hidden if you select "Install lubuntu"

The usb-pendrive is allready shown as a possibly install-target for partitioning. I select the hdd and the install works well.

Grub asks wheather it should install to MBR and then installs to the USB-MBR even if its not /dev/sda, never to hdd

It can easily be worked around by selecting "NO" (dont install to mbr). You will then get the chance to specify the target-device
Selecting "No" is not intuitive though as i thought the installation will proceed without grub being installed anywhere.

The System will boot if the pendrive is still present and booted. It then loads the system from hdd. It can then still be fixed by any method to fix grub.

Here's another person with the same problem and fixing tutorial, after reboot: http://blog.nguyenvq.com/blog/2011/09/15/backup-re-install-ubuntu-with-full-disk-encryption-and-restore-all-files-and-settings/

turtlepurple (turtle-purple) wrote :

I Believe this to be important because together with these bugs (https://bugs.launchpad.net/ubuntu/+source/pkgsel/+bug/1065349, https://bugs.launchpad.net/ubuntu/+source/debian-installer/+bug/1417918) the whole alternate cd is faulty for me: The MBR-Bug applies to "Install" and "expert install" and the software-bug applies to "Install lubuntu" (Thats the options i have in unetbootin menu )

And as the Desktop-CD (14.04.2) is still failing on encrypted LVM - Installation (https://bugs.launchpad.net/ubuntu/+bug/1241833) the alternate CD is still the best way to go.

Encrypted LVM does work with the "Install"-method + MBR-workaround

summary: - Lubuntu alternate Installation puts Grub in MBR of wrong USB Pendrive
+ Lubuntu alternate Installation wrongly puts Grub in MBR of USB Pendrive
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