Hey guys, for the past few days I've been trying to shrink my Vista partition to dual boot with Ubuntu, but I've run into nothing but problems. At first it wouldn't let me shrink it more than 400MB, but after going through the article here about working around the issues with the partition manager and disabling everything listed there, I was able to get it to let me shrink up to about 100GB. So that was one problem solved, unfortunately when I actually tried to shrink it (I was trying to shrink it by about 30GB) I was greeted with an 'Access Denied' error message.
So I tried several methods on this site and from elsewhere on the web, but nothing seemed to work. Eventually I ran Diskperfect in the "Consolidate Free Space" mode, and I tried shrinking again. I was able to shrink the partition by 5GB. After that I tried shrinking another 25GB to get the size I had wanted, but once again I got the Access Denied error. I tried 5GB again just to see if perhaps I had to do it in small amounts, and it did work a second time (Giving me a total of 10GB of unallocated space) but upon trying it a third time I was once again greeted with the same error.
I've tried running Diskperfect again twice and I continue to get the same error. Needless to say this has been quite frustrating. Any help with this would be greatly appreciated.