Acer Aspire ONE 722 User Manual page 22

3
The Create Factory Default Backup dialog box tells you the number of blank,
recordable discs you will need to complete the recovery discs. Make sure that
you have the required number of identical, blank discs ready before continuing.
Note: The number of blank DVDs required varies depending on
the operating system installed.
3 Insert a blank disc into the drive indicated in the Backup to list, then click
Next. You will be shown the backup progress on the screen.
The drive ejects each disc as it completes burning it.
4 Remove the disc from the drive and mark it with a permanent marker.
Important: Write a unique, descriptive label on each disc, such as
'Windows Recovery Disc 1 of 2' or 'Apps/Drivers Recovery disc'.
Make sure you keep the discs in a safe place that you will
remember.