Acer LU.WXA0D.003 User Manual page 84

Create Factory Default Backup
The
This dialog box tells you the estimated size of the backup file.
• If you a using optical discs, it will also show 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.
• If you a using a USB disk, make sure is has enough capacity before
continuing.
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dialog box opens.