Recovering Ubuntu Boot 9.10

Getting Boot Menu Partition Back On Your Drive: Ubuntu 9.10
https://help.ubuntu.com/community/WindowsDualBoot

Recovering Ubuntu Boot 9.10:
https://help.ubuntu.com/community/RecoveringUbuntuAfterInstallingWindows

Grub 2.0 In Depth:
https://wiki.ubuntu.com/Grub2

Data Recovery And Forensics Tools:
http://ubuntu-rescue-remix.org/node/195

Wubi.exe Linux Boot Loader Fix:
https://wiki.ubuntu.com/WubiGuide

For Wubi.exe

Cannot boot into Ubuntu

Ubuntu cannot be booted if Windows has not been shut down cleanly, you have to clear the Windows filesystem from Windows (there is no chkdsk equivalent for Linux yet). If Wubi fails to start, boot into Windows, run chkdsk /r from Windows on the same drive where you have installed Ubuntu, shutdown cleanly and then try to boot into Ubuntu again.

Note that sometimes files are moved by Windows into a hidden folder called c:\found.000. You need to have c:\ubuntu\disks\root.disk and c:\ubuntu\disks\boot. If you do not see those, look for found.000. You need to change the Windows Explorer settings to be able to see hidden folders first, then move the files from found.000 to their original location.

Make sure you did not install on a RAID array or in an encrypted disk. Also make sure you did not install using an Alternate or DVD ISO.