I'm trying to install Windows 7 from within XP (dual boot or upgrade). I get about 5 seconds into the install and encounter the following: "Windows Setup cannot find a location to store temporary installation files. to install Windows, make sure that a partition on your boot disk has at least 655 megabytes (MB) of free space." Error code: 0x80070490 The .iso came from my Technet account. I tried it from a DVD and I tried it extracted onto my local disk. I get the error in both cases. Current disk setup: C:\ 74.5GB total 44.8GB free (locally attached) F:\ 74.5GB total 71.9GB free (USB attached) G:\ 298GB total 219GB free (locally attached) H:\ 186GB total 99.7GB free (USB attached) As you can see, I have plenty of free space on every disk. I still have a few options to try but was wondering if anyone could shed some light on this issue. Thanks!