[Bug 1578943] Re: when I select /dev/sdb to install grub when /dev/sda fails, still error, /dev/sdb is ok

[iugamarian]

root at ubuntu-mate:~# lsblk
NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda      8:0    0 465.8G  0 disk 
├─sda1   8:1    0 141.4G  0 part 
├─sda2   8:2    0  19.5G  0 part 
├─sda3   8:3    0  39.1G  0 part 
└─sda4   8:4    0 265.8G  0 part 
sdb      8:16   0 232.9G  0 disk 
├─sdb1   8:17   0 212.3G  0 part 
└─sdb2   8:18   0  20.6G  0 part 
sdc      8:32   1   7.5G  0 disk /cdrom
├─sdc1   8:33   1   1.5G  0 part 
└─sdc2   8:34   1   2.3M  0 part 
sr0     11:0    1  1024M  0 rom  
loop0    7:0    0   1.5G  1 loop /rofs

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https://bugs.launchpad.net/bugs/1578943

Title:
  when I select /dev/sdb to install grub when /dev/sda fails, still
  error, /dev/sdb is ok

Status in grub-installer package in Ubuntu:
  New

Bug description:
  Windows 7 with strange partition layout on /dev/sda, Ubuntu 15.10 sees it but Ubuntu 16.04 des not see it. /dev/sdb seems to have normal partition layout. Found on Google how to install grub manually:
  http://howtoubuntu.org/how-to-repair-restore-reinstall-grub-2-with-a-ubuntu-live-cd

  When selecting /dev/sdb I think it still is /dev/sda in the script
  variable.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubiquity 2.21.63 [modified: lib/partman/automatically_partition/question]
  ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
  Uname: Linux 4.4.0-21-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  CasperVersion: 1.376
  Date: Fri May  6 09:54:13 2016
  InstallCmdLine: file=/cdrom/preseed/ubuntu-mate.seed boot=casper initrd=/casper/initrd.lz quiet splash --- maybe-ubiquity
  LiveMediaBuild: Ubuntu-MATE 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
  ProcEnviron:
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: grub-installer
  UpgradeStatus: No upgrade log present (probably fresh install)

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