@Snowyo Congrats and a great question.
This is the home user forum and although you may ask freely and virtually anything, it may depend what you get answered for free. Ref. to Nextcloud GmbH there is professional support available:
- Customers and Partners (mainly) closed portal — https://portal.nextcloud.com/
- An Enterprise Subscription from Nextcloud is available with email and phone support.
NOTE: Please be aware I am not affiliated with Nextcloud GmbH and my views are the free views as both a volunteer and a EU citizen and appear in a private capacity solely.
Presumably, you can use the same folder in a dual boot scenario. Nextcloud is a Cloud-storage and any one account may be used by an almost unlimited number of clients.
NOTE: Please avoid some possible sync troubles in a mixed operating system (OS) environment by always deactivating the ‘ignored folder’ option in the NC desktop App/Client setup ‘General’ view first. Find the Edit Ignored Files button and deactivate the check mark in the subsequent view, I presume.
Please consider the below:
Choose an approprate location on your local machine which is locally shared by the file systems of both (or all) operating systems in use on same machine.
Put the ‘Nextcloud’ folder as main entry folder hook to the Nextcloud account data into this location. This folder can be named almost freely at your convenience and besides marketing attitudes there was no need to call that folder ‘Nextcloud’ in default.
Every installation of any operating systems in use on same machine in the NC desktop App/Client setup shall choose the same a.m. main entry folder hook for the so called ‘Local folder’ of the OS setup in use.
Any pre-installed NC desktop App/Client setup has to be changed to use the a.m. main entry folder hook for the so called ‘Local folder’ of the current OS setup.
This comprises my advice for now.
Hope this helps.
A kind reply by problem solved (i.e. ) or a little ACK to one or more of my comments (i.e. click on the heart icon ) would show you are satisfied. This could be a kind gesture and would motivate me like authors of other advice to continue in lending a hand freely…
Please think first, act second only and always have the protection of your data in mind.