Invalid Windows entry in GRUB1.99 menu

[Risto Rossi]

Ubuntu12.04 and Windows8 dualboot on 2 different disks. Default Windows entry in GRUB menu fails to load Windows, machine will reboot when entry is selected:

Code:
menuentry "Windows 8 (loader) (on /dev/sdb1)" --class windows --class os {
 insmod part_msdos
 insmod ntfs
 set root='(hd1,msdos1)'
 search --no-floppy --fs-uuid --set=root 8A62D54B62D53C9F
 drivemap -s (hd0) ${root}
 chainloader +1
}
Original thread: http://ubuntuforums.org/showthread.php?t=2077887 . Solution offered didn't fix problem, Yannbuntu suggested opening a new bug. Thanks!

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: grub2 (not installed)
ProcVersionSignature: Ubuntu 3.2.0-31.50-generic 3.2.28
Uname: Linux 3.2.0-31-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu13
Architecture: amd64
Date: Wed Oct 31 18:15:58 2012
InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120823.1)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: grub2
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

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

[Marcus Tomlinson (marcustomlinson)]

This release of Ubuntu is no longer receiving maintenance updates. If this is still an issue on a maintained version of Ubuntu please let us know.

[Launchpad Janitor (janitor)]

[Expired for grub2 (Ubuntu) because there has been no activity for 60 days.]