You have a Windows 8 system with a FAT volume present (for example a UEFI system with ESP partition in FAT 32 format, or a FAT 32 formatted USB drive plugged in.)
From the Control Panel, you select "Windows 7 File Recovery."
You click on "Create a system image" and select "On one or more DVDs."
Then you select "Start backup."
After the "Start backup" process starts, the following error message will appear:
"The backup failed. The drive cannot find the sector requested. (0x8007001b)."
A change in Windows 8 kernel causes the mounting of raw DVD volumes to fail with a different error code than Windows 7. The new error code is not recognized by "Windows 7 File Recovery", resulting in failure in the backup process.
The following Windows 8 cumulative update has been released to address this issue:
You may work around this issue by formatting the DVD manually first:
Right-click the DVD drive in File Explorer.
Select "Format" and accept the default values.