I downloaded the Ubuntu ISO, burned it to a disk and rebooted my computer to run Wubi. My first issue was that before the Wubi options came up, it said Error: Prefix not set.

I tried the second option (Install Ubuntu), but that kept giving me a black screen, where nothing was happening, so I manually restarted my computer. I then went into the first option (Try Ubuntu without installing), and from there chose the Install Ubuntu program.

However, now that it's installed (and my C: drive has been shrunk), the Windows bootloader doesn't come up to give me the option of booting into Ubuntu.

Any ideas?

Also, I'm running Windows 7, 64 bit.

EDIT: It doesn't show Ubuntu as being installed in Add/Remove programs, but my C: drive has definitely shrunk. There's also no C:Ubuntu. I'm starting to think it didn't get installed or something. Is there a way to reclaim the space into my C: drive and restart the installation?

EDIT2: Apparently it created a partition? Here's what disk manager says: http://files.droplr.com/files_production/acc_1820/pKhU?AWSAccessKeyId=AKIAJSVQN3Z4K7MT5U2A&Expires=1338226683&Signature=JR2w%2FzC023uCFMqCE407EVRrfuU%3D&response-content-disposition=inline%3B+filename%3D%22Screenshot+on+5.29.2012+at+1.36.58+AM.png%22