Retrospect 11.0 for Macintosh and earlier or Retrospect 9.0 for Windows and earlier may report the following error for systems with EFI motherboards:
"ASR Writer" backup failed, error -1001 (unknown Windows OS error)
This issue has been addressed with Retrospect 11.5 for Macintosh and 9.5 for Windows. If you have a PC with an EFI Motherboard, and the older versions of Retrospect, you will be unable to back up the ASR Writer, which is part of your Windows system state. Update to the newest version of Retrospect for EFI motherboard compatibility.
Last Update: September 9, 2014