According to recent user reports, the Anniversary Update also fails to recognize secondary drives. The OS detects secondary drives as raw format, prompting users to format them. However, the drives worked perfectly fine before the upgrade.

The Anniversary Update messes up secondary drives

Fix: Anniversary Update doesn’t recognize secondary drives

Solution 1 – Check for driver updates

If your computer was able to recognize the second hard disk before upgrading to the Anniversary Update, it’s possible that your current hard disk drivers are not compatible with the latest OS. When I went to login it ran through the setup process and brought me to the desktop. It prompted me to select a new OneDrive path. Drive 2 had my OneDrive stuff & other files on it. Windows detected that my drive 2 file system was RAW format and that it needed to be formatted before I could use it. The drive was working fine formatted NTFS before the Anniversary Update

  1. Follow the on-screen instructions to update your drive.

Solution 2 – Change the drive letter

  1. Go to Disk Management > select your secondary hard disk drive

  2. Right-click on it > select Change Drive Letter and Paths

  3. Go to Change > choose the letter for your partition

  4. Click on OK > restart your computer. We are aware that the two solutions listed above may not work for all users. For the time being, there is no permanent fix available as Microsoft hasn’t officially recognized the existence of this issue yet. There’s most likely a compatibility issue between the Anniversary Update and the drivers on the drives the tech giant must fix in collaboration with computer manufacturers. If the two fixes didn’t help you, the best solution is to revert to your previous Windows OS while waiting for Microsoft to fix this problem. RELATED STORIES YOU NEED TO CHECK OUT:

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