I had the same problem with my Acer tablet. Turns out you need way more free space than they’re telling you… I think the real requirement is above 20GB (free!) storage for 64bit upgrade. Maybe about 10GB for 32bit. If you can’t get enough storage (that happens, Windows likes to bloat up the hard drive), you can always do a regular install from ISO file. First off, try downloading the ISO and just mounting it with Windows Explorer, and launching setup from there. This will work, but be sure to save that ISO file in an SD card or a flash drive to get the most possible free storage space. If it gives you the same error, you will have to do a clean install, I’m afraid. Back up your apps and documents, “burn” that ISO to a flash drive and boot from that drive to follow the traditional install steps.
P.S. latest version of Windows 10 is able to activate using a Windows 8 key, so after a clean install it should get that from the BIOS and activate yourself. Sometimes it bugs up and you need to extract that key and activate by phone, but that happens rarely
Interesting. I suspected that space might be a problem. I have around 7.7 GB free right now and have no idea where to get another 2.3 =) I disabled hibernation now (+1.x GB) and doing another round of C cleanup, including system files. Hope to get at least 10 GB free and try again.
I think I tried to install from ISO before and it was on a USB drive. Did not work =(
Will try the system reset if freeing up more space does not help.
Uninstall any large programs, especially if you don’t need them
Delete all restore points and disable system restore (usually 10% of disk space, at least 3 GB)
Use elevated “DISM /online /cleanup-image /startcomponentcleanup /resetbase” to clean up the SXS folder (Makes LOTS of room on systems that have been in use for some time) (Often 1-6 Gb on well used system)
4)Use “disk cleanup” utility to rid system of unused wasted files (often 1-3 Gb on systems that are well used)
5)as said already, disable hibernation, set option to view hidden files and delete hiberfil.sys in root of C: drive
and got to system options and disable virtual memory (will have to reboot to delete swap file) each 2 Gb, 4 Gb total saving
all these things together should almost create 10GB on a well used system.
Oh yes, also since you have already tried to install windows 10 and failed there may be a couple $Windows.~** folders in root of C drive and possibly a Windows.old folder. Windows setup might not take into consideration the space these folders take when checking disk space prior to attempting to do the upgrade and can fail because of this. You will have to take ownership of Windows.old folder and everything in it to delete it if it exists.
Tried to install from USB with 10+ GB free - still failed.
So I did Win 8 clean refresh and after that installed Win 10 from USB - worked just fine. Had to manually download and install touch screen drivers from EVE website.