[wubi] lost disk space with wubi

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http://ubuntuforums.org – Hi Everyone, Need help recovering some disk space I lost. Listed below is the sequence of actions that led to the final state of my laptop. (1)Made a windows backup .(windows 7) (2) Installed Ubuntu under windows using wubi. (3)Ubuntu worked fine under dual boot. (4) Then When I was under Windows, Said yes to windows update. (5)The update tried to install, and at some point rolled back saying it failed. (6) Now when I try to boot into windows, it gave an error mentioning it could not load some user profile. When I try to boot into ubuntu, it did not take me to the usual graphic environment (Hardware)