Question on free space in tablet

Aug 11, 2008
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Hi all, hope someone can help me with a problem with an Acer A100 tablet. Half the disk should be free, but every time I try to do anything, it says there is no free space.

If I go to the Storage tab in setttings, it shows about 1/2 of total space to be unused, but I cant seem to access it. Every time an app tries to update or even if go to the Google Play app and try to purchase something, it says there is not enough free space.

I assume this is flash storage, although I dont really know that much about tablets. Could part of the disk be damaged, or is there some kind of malware that could cause this? Any ideas would be greatly appreciated. I am about ready to do a complete wipe if that is possible, but i bought a gps app (co-pilot live), and dont know where I placed the information to reload it.

I downloaded my pictures and videos to my computer, but when I delete photos, it still does not show any more free space.