iCloud drive on Windows on non-OS (primary) internal (SATA) physical drive

Hello! Apologies if this is a similar question to others asked, but I've not been able to find anything similar :/

Issue: When attempting to put iCloud Drive onto (internal SATA) E:\ drive, getting an error:

"

Invalid Folder
Selected path E:\iCloud cannot be used.
Removable drives are not supported. Please choose different folder.

"

However, per iCloud documentation, Set up iCloud Drive on your Windows computer - Apple Support :

"

Change where your files and folders are stored

[...]If you have iCloud for Windows 14 or later, you can choose a different location.

[...]

5.Choose a different disk drive that’s formatted as NTFS, click Select Folder, then click OK.

[...]

"

Versioning:

iCloud: 15.3.138
Windows: 11 Pro for Workstations 24H2 10.0.26100.2605

Drive Info:

DriveLetter MediaType BusType FileSystemType
----------- --------- ------- --------------
          C SSD       NVMe    NTFS
          E SSD       SATA    NTFS
          F SSD       USB     NTFS
          D SSD       SATA    NTFS

As seen above, my E drive is a SATA connected drive, formatted NTFS

So, my question(s) is/are:

is this errata in documentation and iCloud drive is required to be on the same drive as Windows is installed on?

or

is this a defect in the iCloud software improperly recognizing an internal SATA connected drive as a removable drive

or

is there something else that I've not understood entirely and this whole thing is a Layer-8 (user) problem?

Tanks in advance for any help / advice and happy 2025!