You are allowed to install LR on 2 separate computer at the same time. So you don't have to uninstall LR 5 on the computer it is currently installed on.
When installing LR CC it will install into a completely separate folder leaving LR 5 as it is now. It will also COPY and CONVERT your current LR 5 catalog to a LR CC/6 catalog so your original LR 5 catalog will be as it is now.
NOTE: The LR CC/6 catalog is not backward compatible. So you can't (That's CAN'T) (Fixed original Typo) open a LR CC/6 catalog with LR 5.
Also your Photographers subscription allows for installs of both LR and PS on 2 separate computer as long as they aren't both used at the same time. So you can have both LR and PS installed on a desktop and a notebook.
Thanks a lot, I forgot to specify that my computer is already no.2 for the LR5, so I will need to uninstall it anyway.
But thanks for the info about CC adopting all my files from LR5, that's what I needed to know.
Thank you for your help.
Are you on a Mac or Win PC? With Windows use the Program and Features to uninstall. On Mac I'm not sure.
Deactivate LR 5 before uninstalling. Although It might not matter.