I ran "chkdsk /f" on all partitions on the drive that Windows understands, and still no luck with the Ubuntu installer detecting them. I checked in GParted and the entire drive shows as "unallocated". I guess this means there's some serious error somewhere on my disk? I'll start backing up some important stuff, but is there any way to fix this without removing partitions? <div class="gmail_quote">On 2 May 2012 12:31, Ivan Wright <<a href="mailto:quidsup@gmail.com" target="_blank">quidsup@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Run Scan Disk in Windows and then try the Ubuntu installer again. If that doesn't make any difference then heres a tutorial video I made on using the Manual Partition Editor in Ubuntu Installer <a href="http://www.youtube.com/watch?v=qBCHsgry2RQ" target="_blank">http://www.youtube.com/watch?v=qBCHsgry2RQ</a> Regards, Ivan -- <a href="mailto:ubuntu-uk@lists.ubuntu.com">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>