Bug#766213: grub2 not working after latest updates (Debian Jessie)

[Undefined User]

Colin Watson,

I believe that some of them didn't work.

root at debian:/# debconf-show grub-pc
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
	LANGUAGE = (unset),
	LC_ALL = (unset),
	LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory

root at debian:/# cat /proc/mounts
rootfs / rootfs rw 0 0
none /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0
none /proc proc rw,nosuid,nodev,noexec,relatime 0 0
none /dev devtmpfs rw,relatime,size=1960992k,nr_inodes=490248,mode=755 0 0
none /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0
/dev/sr0 /live/image iso9660 ro,noatime 0 0
/dev/loop0 /filesystem.squashfs squashfs ro,noatime 0 0
tmpfs /live/cow tmpfs rw,noatime,mode=755 0 0
aufs / aufs rw,relatime,si=2bb7a72776a18da3,noxino 0 0
tmpfs /live tmpfs rw,relatime 0 0
tmpfs /lib/init/rw tmpfs rw,nosuid,relatime,mode=755 0 0
tmpfs /dev/shm tmpfs rw,nosuid,nodev,relatime 0 0
tmpfs /tmp tmpfs rw,nosuid,nodev,relatime 0 0
fusectl /sys/fs/fuse/connections fusectl rw,relatime 0 0
binfmt_misc /proc/sys/fs/binfmt_misc binfmt_misc
rw,nosuid,nodev,noexec,relatime 0 0
/dev/loop0 / squashfs ro,nosuid,nodev,relatime 0 0
/dev/mapper/fvnbk--vg-root /media/da2ce046-fda0-4924-9e90-1de225792890
ext4 rw,nosuid,nodev,relatime,barrier=1,data=ordered 0 0
none /dev devtmpfs rw,relatime,size=1960992k,nr_inodes=490248,mode=755 0 0
none /proc proc rw,relatime 0 0
none /sys sysfs rw,relatime 0 0

root at debian:/# ls -l /dev/disk/by-id/
total 0
lrwxrwxrwx 1 root root  9 Oct 21 16:22
ata-WDC_WD7500BPKT-75PK4T0_WD-WXF1C52P9945 -> ../../sda
lrwxrwxrwx 1 root root 10 Oct 21 16:22
ata-WDC_WD7500BPKT-75PK4T0_WD-WXF1C52P9945-part1 -> ../../sda1
lrwxrwxrwx 1 root root 10 Oct 21 16:22
ata-WDC_WD7500BPKT-75PK4T0_WD-WXF1C52P9945-part2 -> ../../sda2
lrwxrwxrwx 1 root root 10 Oct 21 16:22
ata-WDC_WD7500BPKT-75PK4T0_WD-WXF1C52P9945-part3 -> ../../sda3
lrwxrwxrwx 1 root root 10 Oct 21 16:27 dm-name-fvnbk--vg-home -> ../../dm-1
lrwxrwxrwx 1 root root 10 Oct 21 16:27 dm-name-fvnbk--vg-root -> ../../dm-2
lrwxrwxrwx 1 root root 10 Oct 21 16:27 dm-name-fvnbk--vg-swap_1 -> ../../dm-0
lrwxrwxrwx 1 root root 10 Oct 21 16:27 dm-name-fvnbk--vg-tmp -> ../../dm-3
lrwxrwxrwx 1 root root 10 Oct 21 16:27 dm-name-fvnbk--vg-usr -> ../../dm-4
lrwxrwxrwx 1 root root 10 Oct 21 16:27 dm-name-fvnbk--vg-var -> ../../dm-5
lrwxrwxrwx 1 root root 10 Oct 21 16:27
dm-uuid-LVM-RtLokG0eNVoaqU654l10pCe5ik3jnGOe2HNl9j1bch4o9tQr42SNrD5cfqwymJYA
-> ../../dm-4
lrwxrwxrwx 1 root root 10 Oct 21 16:27
dm-uuid-LVM-RtLokG0eNVoaqU654l10pCe5ik3jnGOeFjA3GXBG5ByLZkZM9VhvLzhZWpT5x8wX
-> ../../dm-2
lrwxrwxrwx 1 root root 10 Oct 21 16:27
dm-uuid-LVM-RtLokG0eNVoaqU654l10pCe5ik3jnGOec63JpbMWbyQdDnU4mA9IbiGDSNLhsjHz
-> ../../dm-0
lrwxrwxrwx 1 root root 10 Oct 21 16:27
dm-uuid-LVM-RtLokG0eNVoaqU654l10pCe5ik3jnGOehegfDT9fQrBgec3aHCOl1NXCNYRvUJOu
-> ../../dm-5
lrwxrwxrwx 1 root root 10 Oct 21 16:27
dm-uuid-LVM-RtLokG0eNVoaqU654l10pCe5ik3jnGOelDXNgkVdn1IgbYkDTxJTR1z8CvEZ6oKw
-> ../../dm-3
lrwxrwxrwx 1 root root 10 Oct 21 16:27
dm-uuid-LVM-RtLokG0eNVoaqU654l10pCe5ik3jnGOew91h31irzRrQA80CUvp51AqeJWebHDbS
-> ../../dm-1
lrwxrwxrwx 1 root root  9 Oct 21 16:22
scsi-SATA_WDC_WD7500BPKT-_WD-WXF1C52P9945 -> ../../sda
lrwxrwxrwx 1 root root 10 Oct 21 16:22
scsi-SATA_WDC_WD7500BPKT-_WD-WXF1C52P9945-part1 -> ../../sda1
lrwxrwxrwx 1 root root 10 Oct 21 16:22
scsi-SATA_WDC_WD7500BPKT-_WD-WXF1C52P9945-part2 -> ../../sda2
lrwxrwxrwx 1 root root 10 Oct 21 16:22
scsi-SATA_WDC_WD7500BPKT-_WD-WXF1C52P9945-part3 -> ../../sda3
lrwxrwxrwx 1 root root  9 Oct 21 16:22 wwn-0x50014ee65803c590 -> ../../sda
lrwxrwxrwx 1 root root 10 Oct 21 16:22 wwn-0x50014ee65803c590-part1 ->
../../sda1
lrwxrwxrwx 1 root root 10 Oct 21 16:22 wwn-0x50014ee65803c590-part2 ->
../../sda2
lrwxrwxrwx 1 root root 10 Oct 21 16:22 wwn-0x50014ee65803c590-part3 ->
../../sda3