I purchased a Microsoft Go for my daughter on her 10th birthday. She is wanting to get into animation and creating YouTube videos. I have a copy of Adobe CS6 that I want to install on her device. We got the 32Gb model with a 128Gb external SD card.  While trying to install, Adobe kept throwing an error that it could not install to the external Drive. I even tried to change the default location of where to install apps and that did not work. Luckily her dad knows a trick or two. Here is what I did to 'fool' the system and make it work.
  1. Right click on the windows menu and choose Disk Management.
  2. Right click on the partition you want to install Adobe applications to. In my case it was D: SDEX
  3. Next click on "Change Drive Letters and Paths..."
  4. Now click Add.
  5. Select a folder on the C drive that you want to use as your mount point.  I chose Adobe
  6. Click OK.
Now when you I restarted my install I simply chose the Adobe directory and the installer thought it was really installing on the C: drive. Instant success.