I've had an issue with installing Ubuntu 10.10 Netbook.

The installation appeared to be successful but the the Ubuntu entry failed to be added to Windows Boot Manager.

The wubildr.mbr file was in c:\ (with reasonable modified date so I added the entry manually by using the following bcdedit commands

bcdedit /create /d "Ubuntu" /application bootsector

Using the unique ID returned above then ran

bcdedit /set {id} device boot
bcdedit /set {id} path \wubildr.mbr
bcdedit /displayorder {id} /addlast

then running bcdedit again got

Real-mode Boot Sector
identifier {c27d4f15-991d-11de-8797-00235a07d497}
device boot
path \wubidr.mbr
description Ubuntu

After rebooting I tried the Ubuntu boot entry and got an error

"The selected entry could not be loaded because the application is missing or corrupt"

Is there a way to validate\recreate the .mbr ?