System backup

• Transfer all the files to the new partition

  rsync -aAXvHS --exclude={"/dev/*","/proc/*","/sys/*","/tmp/*","/run/*","/mnt/*","/media/*","/lost+found","/data"} /* /mnt/backup/
  

• Get the UUID for the new partition

  [root@archie /]# blkid /dev/sda2 
  /dev/sda2: UUID="ca2f7146-122f-4746-8725-7aeb4ca792e6" TYPE="ext4" PARTUUID="48c724bf-02"
  

• Edit mountpoints

  [root@archie /]# vim /etc/fstab
  

• Edit the new system's boot configuration

  [root@archie /]# vim /mnt/backup/boot/syslinux/syslinux.cfg
  

• Enter the new system and fix booting

  [root@archie /]# arch-chroot /mnt/backup/
  sh-4.3# syslinux-install_update -i -a -m
  Syslinux BIOS install successful
  Boot Flag Set - /dev/sda2
  Installed MBR (/usr/lib/syslinux/bios/mbr.bin) to /dev/sda