OneDrive after reinstalling windows

I'm here for an update.
My OneDrive was installed on a separate drive and all of that drive was allocated to OneDrive.
Before re-installing, I unlinked my OneDrive and then after installation I installed OneDrive on the same drive.
Surprisingly, it recognized the old folder, it asked me about using the same folder and I accepted! It checked all the files and folders and at the end, everything was as it was before reinstalling windows, although it took a long time to check the files (but not downloading uploading and duplicating problems)
Thanks for your participation.

First off there is no "uninstall" for windows, I'll assume you're asking about a clean install format partition. I tried once to sync up a folder of the same files to onedrive but in my experience that's not going to work. The simplest method is to just reinstall OneDrive (after windows has been installed) and download the files again to sync. In my case I always have two or three pcs in sync so never a worry about losing the files.

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Hi @Ahmadreza Shariatkhah

> If I uninstall windows, OneDrive app will be uninstalled too, so what happens to my files? (The status of all files is "Always keep on this device)

Befor you re-install Windows or reset Windows, please unlink OneDrive first, this operation can cancel the mirroring of the local OneDrive folder and the OneDrive cloud.
If the local OneDrive data is lost due to Windows reinstallation or Windows reset, this will not affect the data in the OneDrive cloud.

> If we assume that the files remain untouched in drive E:\ (since I will format only the windows partition), after reinstalling windows, I want to install OneDrive again on drive E:\ to get the content synced. I have seen that OneDrive gets crazy when you backup old backed up files. I worry if it happens again and OneDrive backup duplicate files and folders and maybe get stuck in a loop. Is it stoppable? Is there any way?

The things you worry about maybe happen. If this happens, we need to find a way to delete duplicate data, such as using third-party software.

In my opinion, I aggree with DSPatrick, syncing data back from the OneDrive cloud to local is one way to avoid the above.
If you have limitations in downloading these data, you could use "Files On-Demand", but under this situation, you can’t open online-only files when your device isn’t connected to the Internet. When you open an online-only file, it downloads to your device and becomes a locally available file.

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