ubuntu@ubuntu:~$ sudo fdisk -l

Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00022117

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *        2048   973733887   486865920   83  Linux
/dev/sda2       973735934   976771071     1517569    5  Extended
Partition 2 does not start on physical sector boundary.
/dev/sda5       973735936   976771071     1517568   82  Linux swap / Solaris
ubuntu@ubuntu:~$ sudo mount /dev/sda1 /mnt
ubuntu@ubuntu:~$ sudo mount --bind /dev /mnt/dev
ubuntu@ubuntu:~$ sudo mount --bind /proc /mnt/proc
ubuntu@ubuntu:~$ sudo mount --bind /sys /mnt/sys
ubuntu@ubuntu:~$ sudo chroot /mnt
chroot: impossibile eseguire il comando "/bin/bash": Formato eseguibile non valido