Hello there,
It is not recommended to use a recovery drive to save other documents but you can use the drive.
The easiest way to copy a folder with all files and subfolders is to run this command: robocopy c:\temp\source c:\temp\destination /E /DCOPY:DAT /R:10 /W:3. The /E switch tells Robocopy to copy all subfolders, including empty ones. If you don't want to copy empty subfolders, use the /S switch.
Here is the list of all useful commands https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/robocopy
Robocopy will fail to copy files that are locked by other users or applications, so limiting the number of retries with /R:0 will speed up copying by skipping any in-use files. The Windows Volume Shadow Copy service is the only Windows subsystem that can copy open files. Robocopy does not use the Volume Shadow Copy service, but it can back up a volume shadow that has already been created with VSHADOW or DISKSHADOW.
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