[user@hostname ~]$ sudo -s
Or
[user@hostname ~]$ su
- Make a directory in /mnt/.
[root@hostname ~]# mkdir /mnt/Manjaro/
[root@hostname ~]# cd /mnt/Manjaro
- Get Manjaro install device directory.
[root@hostname /mnt/Manjaro]# os-prober
- Mount the partition to /mnt/Manjaro.
[root@hostname /mnt/Manjaro]# mount /dev/sdXY /mnt/Manjaro
- Mount processes (proc), the partitions (dev), and the file system (sys).
[root@hostname /mnt/Manjaro]# mount -t proc proc proc/
[root@hostname /mnt/Manjaro]# mount --rbind /sys sys/
[root@hostname /mnt/Manjaro]# mount --rbind /dev dev/
- Chroot into the directory.
[root@hostname /mnt/Manjaro]# chroot /mnt/Manjaro