hahahahaha I guest it would be faster to backup personal data on another partition/hard-drive and to make a clean install
You're soooooo right! I tested once to upgrade and it took just 5 hours!! OK, it's just a quarter of the time MS is telling, BUT??? In the meantime I use WET and wait for the release from PCmover!!
The details of that 1220 minutes are: "Super User: 650GB data, 40 Applications, OS Settings Modified, and 15 optional components" on their Mid-Range hardware profile (2.6GHz Dual Core, 2GB RAM) That "650GB data" is limited to 'loose' data, like pictures and documents, and not the applications themselves (like Office). Given that much data in addition to 40 applications installed, yeah.. I can see it taking a while. BUT like everything... I'm sure the time is rounded WAY up and rapidly scaled down as the process starts. I would bet most people will fall into the Medium User profile, so figure ~120 minutes give or take.
why so long?.. I tried it with the windows 7 rc and took maybe 1 hour fresh installed vista and then I did the upgrade.. that might be why..i dont know
I used a computer with a lot Programs and Data and that took just 5 hours! By the way that computer isn't Low-End: MSI DKA790GX, AMD X2 6000, 4 GB OCZ DDR2 800, EVGA 9850, 2 x 320 GB, 1 x 1 TB pp..
As I wrote, it was just the first and even last test for to upgrade! Will wait for PCmover and test again!
Normally an upgrade process of a rig not fully loaded with data takes around 3-4 hours. Since a clean install is much better and takes up to 30 minutes max I reserve the 3 hours to prepare/backup the data and then restore it on a clean-installed OS. Much better solution IMHO.