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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:

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The best way for installing Ubuntu is a separate partition. You may do a control of the actual situation. Download Gparted (it is for free), burn it to a disc, and boot you computer from this disc. This will give you an idea what is going on. You can make a separate partition for ubuntu (ext4) and a swap (max. 2Gb), and install Ubuntu in this partition. See here:

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Thanks! I'd definitely want to install onto a seperate partition, but for some reason the partition that's being created isn't being detected by Windows? – Chintan Parikh May 28 '12 at 18:43
Thanks dude, just got it all sorted. I'll leave this here in case anyone sees this in the future: gparted told me that I had partitioned my hard drive (the Ubuntu partition was ext4 like you said), so I assumed that I accidently hadn't used wubi. I tried re-installing with the CD, but still no like, the bootloader wouldn't come up. What I had to do was find what drive Ubuntu was installed on (sda6) and run the following commands from the Ubuntu live CD: sudo mount /dev/[location of ubuntu] /mnt sudo grub-install --boot-directory=/mnt/boot /dev/sda – Chintan Parikh May 29 '12 at 4:30
@ChintanParikh: that's worth putting as a separate answer, as it shows how you fixed your system. – Jeremy Kerr Jun 20 '12 at 5:24

When you have a partition for Ubuntu (ext3 or most likely ext4), Windows is unable to recognize that partition - it just doesn't know how to read or write to ext3/4 file systems. On the other hand, in Ubuntu, you can easily access NTFS file systems which are used by Microsoft Windows.

However there seems to be a couple of solutions for this as well. I have not tried them out.

How to Access Linux Partitions (ext2, ext3, ext4) From Windows in Dual-Boot System?

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Funnily enough, I wanted to install it via Wubi because I thought partitioning my hard drive might be too difficult and I didn't want to mess up my computer - it turns out I accidently installed Ubuntu on a new partition and everything works great! – Chintan Parikh May 29 '12 at 6:17

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