os-prober does not find Windows 7

[smwny]

Binary package hint: os-prober

os-prober did not find my Windows 7 installation. When I added:

menuentry "Manual Windows entry" {
  search --set --fs-uuid 64f8dcb7f8dc8926
  chainloader +1
}

to /etc/grub.d/40_custom, Windows booted fine.

I am going to post the output from Boot Info Script. Tell me if there is any more information you need.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: os-prober 1.39
ProcVersionSignature: Ubuntu 2.6.35-22.33-generic 2.6.35.4
Uname: Linux 2.6.35-22-generic x86_64
Architecture: amd64
Date: Sat Feb 5 21:15:18 2011
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
ProcEnviron:
 LANG=en_US.utf8
 SHELL=/bin/bash
SourcePackage: os-prober

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.