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
  

Burning Blu Ray Discs

Look at this blog
For mkudffs, see arch: udftools

What I get is

24712708096/25000000000 (98.9%) @0.9x, remaining 1:08 RBU 100.0% UBU  76.6%
24726929408/25000000000 (98.9%) @0.9x, remaining 1:04 RBU 100.0% UBU  79.7%
24741150720/25000000000 (99.0%) @0.9x, remaining 1:01 RBU 100.0% UBU  85.9%
24755372032/25000000000 (99.0%) @0.9x, remaining 0:58 RBU 100.0% UBU  73.4%
:-[ WRITE@LBA=b87400h failed with SK=5h/END OF USER AREA ENCOUNTERED ON THIS TRACK]: Input/output error
:-( write failed: Input/output error
/dev/sr2: flushing cache
/dev/sr2: closing track
/dev/sr2: closing session
:-[ CLOSE SESSION failed with SK=5h/INVALID FIELD IN CDB]: Input/output error
/dev/sr2: reloading tray