Can I suggest that if you are running from a live CD, you may need to set-up your internet connection to allow the computer access to the files. As its a live CD you need to do this each and every time you run it, because it is not saving any preferences as it would when you are running from the Hard drive

Just a though!!

Ally

If you can reinstall i think you should do it. Backup your data and reinstall the system. Your problem seems complex and requires closer look which is impossible through blog messages. Since you asked whether it’ll be easier to reinstall all I can tell you, assuming that you know how to reinstall, that it’ll save your time and will definitely solve your grub issue

I ‘ll try to emulate the situation on my test system to find out the problem. I ‘ll let you know

I’m sorry … Good luck !!!

Thanks for your reply

I still couldn’t fix my GRUB issues though. Basically after typing sudo grub-install /dev/sda, it returned:

grub-probe: error: cannot find a device for /boot/grub

No path or device is specified.
Try ”grub-probe –help” for more information.
Auto-detection of a filesystem module failed.
Please specify the module with the option ‘–modules’ explicitly.

I do not know if it means anything but I cannot mount the hdd either due to a similar filesystem error. Also, any ideas on how could all this GRUB 17 error happened? I never tried to install any other OS or partition the disk or similar… Would it be easier for me to just reinstall the whole system?

Thanks for your advice,

Marc.

I think grub-install will solve your problem. Since you don’t ‘ve multiple disk it shouldn’t be a problem.

$ sudo grub-install /dev/sda

after this follow the steps from the blog as you were doing earlier. (eg. sudo grub and find stage1 commands)

Let me know …… Good luck

The report it generated is as follows:

============================= Boot Info Summary: ==============================

=> Grub0.97 is installed in the MBR of /dev/sda and looks on the same drive
in partition #1 for /boot/grub/stage2 and /boot/grub/menu.lst.

sda1: _________________________________________________________________________

File system:
Boot sector type: -
Boot sector info:
Mounting failed:
mount: unknown filesystem type ”

sda2: _________________________________________________________________________

File system: Extended Partition
Boot sector type: -
Boot sector info:

sda5: _________________________________________________________________________

File system: swap
Boot sector type: -
Boot sector info:

=========================== Drive/Partition Info: =============================

Drive: sda ___________________ _____________________________________________________

Disk /dev/sda: 203.9 GB, 203928109056 bytes
255 heads, 63 sectors/track, 24792 cylinders, total 398297088 sectors
Units = sectors of 1 * 512 = 512 bytes
Disk identifier: 0×6c2be8ed

Partition Boot Start End Size Id System

/dev/sda1 * 63 386,154,404 386,154,342 83 Linux
/dev/sda2 386,154,405 398,283,479 12,129,075 5 Extended
/dev/sda5 386,154,468 398,283,479 12,129,012 82 Linux swap / Solaris

blkid -c /dev/null: ____________________________________________________________

/dev/loop0: TYPE=”squashfs”
/dev/sda5: UUID=”23b42fa1-ea84-4f71-9d70-ef979de8f7ba” TYPE=”swap”

=============================== “mount” output: ===============================

aufs on / type aufs (rw)
none on /proc type proc (rw,noexec,nosuid,nodev)
none on /sys type sysfs (rw,noexec,nosuid,nodev)
udev on /dev type tmpfs (rw,mode=0755)
/dev/sr0 on /cdrom type iso9660 (rw)
/dev/loop0 on /rofs type squashfs (rw)
none on /sys/fs/fuse/connections type fusectl (rw)
none on /sys/kernel/debug type debugfs (rw)
none on /sys/kernel/security type securityfs (rw)
none on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
none on /dev/shm type tmpfs (rw,nosuid,nodev)
tmpfs on /tmp type tmpfs (rw,nosuid,nodev)
none on /var/run type tmpfs (rw,nosuid,mode=0755)
none on /var/lock type tmpfs (rw,noexec,nosuid,nodev)
none on /lib/init/rw type tmpfs (rw,nosuid,mode=0755)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev)
gvfs-fuse-daemon on /home/ubuntu/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev,user=ubuntu)

Hope it makes sense

Thanks again,

Marc.

The command is not found because the is grub is not installed in your system. Trying apt-get from live CD won’t fix the problem. Without any more information it’s difficult for me to suggest anything but you can take a look here but don’t try it blindly. http://www.gnu.org/software/grub/manual/html_node/Installing-GRUB-using-grub_002dinstall.html.

Download this script http://sourceforge.net/projects/bootinfoscript/ and execute as suggested in the script. It’ll generate a report, send me that report. It’ll be helpful for me to understand your system.

grubinstall is a little bit risky command if you are executing it blindly. Be careful.

After typing sudo grub I get this:

sudo: grub: command not found

An I cannot proceed any further. Any suggestions?

Thanks for your help!

Your command is incorrect. Try this

grub> root (hd0,5)

There is always a space between root and the string (hd0,5) and hard disk is represented as hd0 and not as sd0. These were the two problems with your command.

I hope it works.

Good Luck

grub> root(sd0,5)

Error 27: Unrecognized command

Do you help me?