I recently bought a new Dell XPS 8900 with a 1TB drive and only 8GB of RAM. It was loaded with Windows 7 but came witha Windows 10 disk and license. My intention was to put in an SSD to install Windows 7 then upgrade the original HDD to Windows 10 ( I have to learn this new OS in order to help local clients who continue to have problems).
After numerous attempts at installing Windows 10 from the disk, I contacted Dell Tech Support chat and was grafeful to have their help. They gave me instructions that still did not work but then offered a Windows 10 ISO to download to create a bootable USB drive - which I did.
I had disconnected the SSD which was cloned with Windows 7 and was working fine, during the Windows 10 installation (which was likely my next mistake) . The install from a USB 3.0 flash drive took 4 hours then the Updates, program installations, etc., and I still had to download drivers from the Dell support site. If you have done many installs you understand.
I had to go back into the BIOS to turn off Secure Boot in order to get Windows 7 to boot again. The UEFI boot loader has a conflict with that it seems.
Now each time I boot into Windows 10 then back into Windows 7 (which is the default boot drive) it insists on running scandisk and lo and behold scandisk finds and fixes thousands of errors that go by so fast I cannot read until it is about finished. Th end error reads: Deleting extended attribute set due to the presence of reparse point in file 687314. It freezes for a while at file 752802.
If I continue to boot into Windows 7 this does not happen again until after I boot to Windows 10 then boot into Windows 7 again. It even forced a scandisk for a backup USB 3.0 external drive that I had plugged in.
It seems to me that Windoze 10 is sabotaging any other drive that it sees. Here is my question: Is there any hope for a dual boot system with windoze 10 or should I get another computer to dedicate to it? What about dual boot with Win10 and Suse Linux? Has anyone tried that?
Mahalo for your help from the Big Island of Hawaii