NTFS or get out seems to be Microsoft's new OneDrive policy as if you try to upload files from disks formatted with their FAT32 or ReFS file systems you will be greeted with an error. This restriction has existed on Windows 8.1 for a while but it is a new twist now offered on the current Win 10 Insiders Edition, which does mean there is hope that it will be removed. This will have an effect on those who use ultramobile devices which depend on SD cards to extend their storage as well as those who have adopted Microsoft's new Resilient File System. You could try a non-destructive format of your drive, or move it to an NTFS disk to be able to then upload it. For more suggestions and a link to a place to vent your spleen you can visit The Register.

"Microsoft discovered a warning message that should have existed was missing when a user attempted to store their OneDrive folder on a non-NTFS filesystem – which was immediately remedied. Nothing has changed in terms of official support and all OneDrive folders will continue to need to be located on a drive with the NTFS filesystem."

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