I experienced the same problem -- run chkdsk /f (or is it (-f) in windows. this is a ubuntu security feature because it has to resize a windows partition, it needs to ensure it wont move half the windows folder to ext4 or something like that. <div> SOLUTION: boot into windows run chkdsk /f , restart twice and then put live cd in. If that doesnt work then try defragging the windows drive as well. </div><div>Hope this helps <div class="gmail_quote">On 2 May 2012 09:32, alan c <<a href="mailto:aeclist@candt.waitrose.com" target="_blank">aeclist@candt.waitrose.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On 02/05/12 01:41, Joe wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> Hey guys, Yet another poor person having trouble installing Ubuntu 12.04, unfortunately :(. Using the graphical installer on the LiveCD (clicking Install shortcut on desktop) when asked how to install partition-wise there's no option to overwrite Ubuntu 11.04 (not a big deal, but I'm sure there's supposed to be some kind of similar option). The bigger problem is, though, that when selected to choose the layout manually, my current partitions are not detected, which leaves formatting the entire drive as my only option. As happy as I would be if I could do this and completely remove Windows, I do need Windows for some work stuff, so I'm stuck unable to install 12.04 unless I can sort this out. </blockquote> health warning: On the occasions that a windows partition has not been recognised, or has not been accepted readily by say, gparted, I have found that there have been some sort of problem with the windows partition or the filesystem. At worst, the disc itself was giving bad sectors. I hope this is not the situation for you, but if it is, make sure your important files are backed up well (twice) and, from windows do standard stuff like checkdisk (chkdsk?) maybe do this more than once. If the apparent ubuntu trouble then persists then make efforts to check the HD itself - if the ubuntu live cd runs ok then in live session , use the 'disk utility' to show its health good luck -- alan cocks -- <a href="mailto:ubuntu-uk@lists.ubuntu.com" target="_blank">ubuntu-uk@lists.ubuntu.com</a> <a href="https://lists.ubuntu.com/mailman/listinfo/ubuntu-uk" target="_blank">https://lists.ubuntu.com/mailman/listinfo/ubuntu-uk</a> <a href="https://wiki.ubuntu.com/UKTeam/" target="_blank">https://wiki.ubuntu.com/UKTeam/</a> </blockquote></div> </div>