Disk /dev/sda: 320.1 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000bd060

Device Boot Start End Blocks Id System
/dev/sda1 1 7833 62914560 7 HPFS/NTFS
/dev/sda2 7833 11097 26214400 83 Linux
/dev/sda3 * 11097 14360 26214400 83 Linux
/dev/sda4 14360 38914 197225473 5 Extended
/dev/sda5 14360 14426 524288 82 Linux swap / Solaris
/dev/sda6 14426 34007 157286400 83 Linux
/dev/sda7 34007 34998 7955456 83 Linux
/dev/sda8 34998 38914 31456256 b W95 FAT32
ubuntu@ubuntu:~$ sudo mkdir /mnt/temp
ubuntu@ubuntu:~$ sudo mount -t ext4 /dev/sda2/mnt/temp
Usage: mount -V : print version
mount -h : print this help
mount : list mounted filesystems
mount -l : idem, including volume labels
So far the informational part. Next the mounting.
The command is `mount [-t fstype] something somewhere'.
Details found in /etc/fstab may be omitted.
mount -a [-t|-O] ... : mount all stuff from /etc/fstab
mount device : mount device at the known place
mount directory : mount known device here
mount -t type dev dir : ordinary mount command
Note that one does not really mount a device, one mounts
a filesystem (of the given type) found on the device.
One can also mount an already visible directory tree elsewhere:
mount --bind olddir newdir
or move a subtree:
mount --move olddir newdir
One can change the type of mount containing the directory dir:
mount --make-shared dir
mount --make-slave dir
mount --make-private dir
mount --make-unbindable dir
One can change the type of all the mounts in a mount subtree
containing the directory dir:
mount --make-rshared dir
mount --make-rslave dir
mount --make-rprivate dir
mount --make-runbindable dir
A device can be given by name, say /dev/hda1 or /dev/cdrom,
or by label, using -L label or by uuid, using -U uuid .
Other options: [-nfFrsvw] [-o options] [-p passwdfd].
For many more details, say man 8 mount .
ubuntu@ubuntu:~$ sudo mount -t ext4 /dev/sda2 /mnt/temp
ubuntu@ubuntu:~$ sudo mount -o bind /dev /mnt/temp/dev
ubuntu@ubuntu:~$ sudo mount proc /mnt/temp/proc -t proc
ubuntu@ubuntu:~$ sudo mount sysfs /mnt/temp/sys -t sysfs
ubuntu@ubuntu:~$ sudo chroot /mnt/temp
root@ubuntu:/# sudo grub-install /dev/sda2
sudo: unable to resolve host ubuntu
sudo: grub-install: command not found
root@ubuntu:/# sudo grub-install /dev/sda
sudo: unable to resolve host ubuntu
sudo: grub-install: command not found
root@ubuntu:/# sudo grub-install /dev/sda2
sudo: unable to resolve host ubuntu
sudo: grub-install: command not found

I oto wynik tego polecenia oraz nieudane przywrócenie...

sudo fdisk -l 

Jestem w niektórych kwestiach nie dość zaawansowanym użytkownikiem, moje pytanie brzmi więc następująco: Czy jeśli moje Ubuntu zainstalowane jest na trzeciej partycji, to poprawnym zapisem będzie /dev/sda3?

Z góry dzięki za odpowiedź
Pzdr. Adam