- Too few disks?
- Too small disks?
- Missing disk driver (RAID)?
- Original Windows / PE-Windows incompatibility?
(The ASR service in the PE may be unable to use the XML disk layout information of the backed up machine if it is created by the ASR service of another Windows version. It is therefore advisable to always use the appropriate AIK/ADK for creating the PE media.)
- BIOS mode of the PE recovery session unlike the BIOS mode of the backup session?
You can find that out
a) in a "normal" Windows using the msinfo32.exe tool.
b) in a PE-Windows as follows:
1. boot into PE recovery
2. cancel the automatically starting DC BMR Wizard (key' a')
3. wpeutil UpdateBootInfo
4. reg query HKLM\System\CurrentControlSet\Control /v PEFirmwareType
A value of 0x01 means that the machine is running in BIOS mode.
A value of 0x02 means that the machine is running in UEFI mode.
5. in addition to step 4, it can be helpful to dump the entire registry key into a file so that support can perform the analysis:
reg query HKLM\System\CurrentControlSet\Control > boot. info