windows 8 on a tablet

Hello, I just got a icraig tablet, and when it loaded windows 8 came up and then I notes that it only had 4.5gb of hard drive when there was supposed to be 16, so I went to computer management and disk management, and I found out that there are 3 different partitions, How can I put them all in one partition, when I right click on a partition it just popup with a detile and no away to combine them to one, I dont know how to reinstall windows 8, because all i can do is do a windows reset and It dose not give me a chose to format hard drive, so I downloaded a windows iso and put it on a micro sd card but I have no keyboard to change the way the start up is, and I cant update it form Microsoft update because I dont have disk space to do an upgrade, what should I do to get this to work, I dont know what to try so i can get the full size of my hard drive. Thank you

I have read where some people have been successful at recovering some of that disk space on other tablets (I know nothing about your particular tablet) because one of those partitions is probably a restore partition. You can back the restore partition up to an external drive then delete that partition and resize the C: partition in order to make it bigger.

You would need to post a screen shot of your disk layout from Disk Management for anyone to advise you further. However, I can tell you that 16G is awful small for a Win 8 boot drive.

Does the tablet have a micro SD card slot? If so, that's the general way you can add additional storage to your tablet.

If The Tablet is windows 8 and disk management is showing only 3 partitions, it is using WIMBOOT...
Do Not remove the recovery partition.... Create a Recovery Drive, (control panel > Recovery > create a recovery drive...

Then do a system recovery by booting from the recovery USB drive you just created....

This may gain you some drive space on C:

Boot up Windows setup, delete all partitions on the hard drive and install to one empty unallocated partition, it will automaticly repartition so you get the most size for you windows 8.

Yes, that is an option... But also creates a problem... Being a TOUCH tablet you should prepare the Boot.wim (WinRE.wim) and Install.wim with the required system drivers in order to have the ability to use touch Out of the Box...

I would suggest exporting them from the current OS setup and then run Image-Prep to create new install media with the system drivers preloaded,,

https://toolslib.net/downloads/viewdownload/250-image-prep/