Grub2 keeps rebooting without showing menu

[Guest CtrlSPATIE]

Dear all,

 

Right after passing the BIOS, at the moment Grub is supposed to show it’s menu, my Debian Linux (Jessie/sid) system reboots.

 

I have been googling and testing for hours and can’t seem to find a way around the issue.

 

How do I solve this?

 

All testing and installing is done using Debian from 7.5 LIVE CD, command line only.

 

I have set up my RAID as follows:

 

Code:

root#debian:~# cat /proc/mdstat

Personalities : [raid1]

md3 : active raid1 sda4[0]

1458608960 blocks super 1.2 [2/1] [u_]

 

md2 : active raid1 sda3[0]

5238720 blocks super 1.2 [2/1] [u_]

 

md0 : active raid1 sda1[0]

102336 blocks [2/1] [u_]

 

unused devices: <none>

Partition table of running 4TB disk (only 1.5TB is currently used):

 

Code:

root#debian:~# parted /dev/sda

GNU Parted 2.3

Using /dev/sda

Welcome to GNU Parted! Type 'help' to view a list of commands.

(parted) p

Model: ATA WDC WD40EFRX-68W (scsi)

Disk /dev/sda: 4001GB

Sector size (logical/physical): 512B/4096B

Partition Table: gpt

 

Number Start End Size File system Name Flags

1 1049kB 106MB 105MB ext3 boot bios_grub

2 106MB 1180MB 1074MB swap

3 1180MB 6548MB 5369MB ext4 system

4 6548MB 1500GB 1494GB ext4 data

Mountpoints are set:

 

Code:

root#debian:/mnt/etc# cat fstab

# /etc/fstab: static file system information.

#

# <file system> <mount point> <type> <options> <dump> <pass>

proc /proc proc defaults 0 0

/dev/md2 / ext3 defaults,errors=remount-ro 0 1

/dev/sda2 none swap sw 0 0

/dev/md0 /boot ext4 defaults 0 1

/dev/md3 /data ext4 defaults 0 1

#

/dev/cdrom /media/cdrom0 udf,iso9660 user,noauto 0 0

After chrooting /mnt I run grub-install:

 

Code:

root#debian:/# grub-install /dev/sda

/usr/sbin/grub-probe: warning: Couldn't find physical volume `(null)'. Some modules may be missing from core image..

/usr/sbin/grub-probe: warning: Couldn't find physical volume `(null)'. Some modules may be missing from core image..

Installation finished. No error reported.

Code:

root#debian:/# update-grub

Generating grub.cfg ...

/usr/sbin/grub-probe: warning: Couldn't find physical volume `(null)'. Some modules may be missing from core image..

/usr/sbin/grub-probe: warning: Couldn't find physical volume `(null)'. Some modules may be missing from core image..

/usr/sbin/grub-probe: warning: Couldn't find physical volume `(null)'. Some modules may be missing from core image..

/usr/sbin/grub-probe: warning: Couldn't find physical volume `(null)'. Some modules may be missing from core image..

/usr/sbin/grub-probe: warning: Couldn't find physical volume `(null)'. Some modules may be missing from core image..

/usr/sbin/grub-probe: warning: Couldn't find physical volume `(null)'. Some modules may be missing from core image..

done

 

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