I have a Toshiba Encore Mini Tablet that I bought a couple of years ago and managed to upgrade it to Windows 10 last year. I document that effort here. It was quite a task as the Encore Mini is really crippled: 1 gb of RAM and only 16 gb of storage. Minimal, indeed. So, how was going to do this upgrade? Well, pretty much the same way as the original upgrade.
Since I do not use the Toshiba for much, mostly Candy Crush, web browsing and some video watching, I didn't have a whole lot on the device. So, the first thing I had to do was clean it up.
I freed about two gigs of space and then tried the upgrade using the system update. That did not work. I needed over five gigs on C:\, which would be next impossible. Windows itself takes nearly ten of the sixteen gigs, so freeing 5.76gb was a no go. So, I tried to use an SD card. I put in a 32 gb card and tried again, this time telling it to use the SD card. That bloody thing still needed nearly three gb on C:!
I then remembered the Media Creation Tool. I put the card in my desktop and fired up the tool. UGH! It did not let me use the SD card!
I figured out, as well, that the bloody SD card was bad. I kept having to format it...which you should not have to do. I put it aside and found a 16gb card. I then tried everything again and...failure greeted me at every step. As a last ditch effort, I downloaded the 32 bit ISO to the SD card. Put it in the Toshiba, mounted the ISO as a drive and ran setup from there.
Setup did point out the lack of space on C:\ but did allow me to use the SD card AND 2gb on C:\.
The upgrade took quite a bit of time. I'm not sure, because, after an hour, I went to bed. I finished overnight.
When it finished the initial user setup, it began to hang on me. I tried everything I could think of, even trying to reset the operating system using the OS Refresh/Reset feature. They, too, locked up. On a whim, I removed the SD card and rebooted the tablet. It has worked perfectly since. I have formatted a 4gb SD card and that has been working splendidly. I'm not sure why the ISO SD Card caused a problem, but I am also glad I figured out what was wrong.
The tablet has been running well. It is a bit speedier, but that might be because it is a new install of Windows.
So, there you go, a tablet that, by any definition, is a turd, has been upgraded--not painlessly--to the latest and greatest Windows. Life is good.