I have just tried, twice, to run Windows 7 (RC build 7100) on a partition created using Disk Director (version 9 build 51. I installed to a pre-existing NTFS partition without reformatting (which is what happens by default) but this seems to have been a mistake. When I started to run Windows 7 I soon started to receive disk errors and requests to run chkdsk. Chkdsk ran, found errors but said it could not fix them. I tried this on two different hard drives but the same errors arose. There is a report here of someone else experiencing a similar problem http://www.neowin.net/forum/lofiversion/index.php/t733350.html and something similar here http://social.technet.microsoft.com...48-ce50-4b49-9a91-847b20039757/?ppud=4&ffpr=0 In both cases the fault is attributed to the use of Acronis software to create the partition on which Windows 7 was subsequently installed - which would fit my circumstances also. Reformatting during installation seems to have cured the problem for me.