Text size: Right click on desktop, Personalize, Display .. and then you'll see the options. There are a lot of related options, so experiment by clicking on Advanced and whatever other links you see, just after Personalize.
For File Explorer, you have the hated ribbon now, and at its far right (if I remember properly) there is some kind of 'Options' button which if you click it, allows you to select 'Details'. That will make your drives appear left side in the right pane.
If you want them to appear in the left pane, it's more complicated. Depends on what you mean. So play with 'Organize' and 'Layout' in the upper left corner of the File Explorer.
Basically, you have to experiment as MSFT has again moved the cheese in frustrating ways. As if they want us to spend our lives on FINDING HOW TO DO THINGS rather than on life.
Edited by brainout, 02 September 2015 - 11:56 PM.