Screwed something up. Ubuntu and Win 7.

So here's the deal. I made a 20gb partition by shrinking a partition with diskmgmt.msc. All good so far.

Then I installed Ubuntu 12.04.2 and tried to install it on the 20gb partition I made but it gave me a error trying to install it on that partion so I chose the option "Install them side by side, choosing between them each startup". The installation completed successfully but there wasn't a grub loader window. It just booted straight to windows 7.

I then restarted the computer and reinstalled Ubuntu. When the installation completed I rebooted, got into the grub loader window and selected Ubuntu. It then successfully booted into ubuntu. I then restarted and selected windows 7 from the grub window.

Windows 7 then booted successfully. I then went to my computer, looked at the 20gb partition I made and saw that it was still empty except for maybe a few mb used.

I thought since it wasn't used and ubuntu apparently didn't install onto that partition, I can delete it. So I did.

When I next rebooted the pc I got this error

"error : no such partition.
grub rescue>"

I tried booting from my Windows 7 cd to get into the rescue center but I got the same error again. I tried booting with the Ubuntu cd but also didn't get past that error message.

Help is much appreciated.

Update: I solved the problem by inserting a Linux Mint Mate disk and booting from it, then selecting install, then "Delete Ubuntu and Install Linux". Then when the installation finished, I got the right grub loader window where I can choose what OS to run. So everything is working again! Phew!

A question I have is, can I triple boot Ubuntu, Linux and win 7 or is that too much?

Yes you can. I had it before. But there messy. I click on side by side but it wouldn't let me dual boot. But i deleted the partition and did it under advanced and worked fine