Among Windows 10 Anniversary Update’s more obnoxious bugs is one that erroneously reports certain drives (actually, partitions) are in RAW format and can’t be accessed from inside Win10.
When Win10 encounters a RAW-formatted partition, it encourages you to format the partition, thereby wiping out all the data on it. Of course, if the bad partition contains perfectly usable files — indeed, in most cases, it includes files that are readily accessible in Windows 10 Fall Update — you may get suckered in, reformat the partition, and lose all of your data.
