I am updating from Windows 7 Pro to W10 Pro.
I have had one go of running it straight through using the MediaCreationToolx64 but it did not complete and reverted to the old system W7.
It said error in installation in phase Second Boot, with error in operation Boot. 0Xc1900101 - 0x40017
I have found a confusing range of possible solutions using Google.
I have collected the following:
Disk 0: 465GB
On my partitions I have:
C: W7OS 107 GB / space free 120 GB
D: used: 183 GB / free 37 GB
Q: Recovery used: 10 GB / free 5.4 GB
I have 4GB of RAM
Service Pack 1
My guess is that the space on C: is not enough for the new OS. If so should I repartition? Could it be something else?
I have now downloaded Windows 10 to a usb memory stick, so that part of the operation I should not have to repeat (though I suppose it should be verified).