Windows 10 Anniversary Update Might Hide Partitions After Install

No problem with partitions on my computer.

lehnerus2000 said:

Huh?

Users can't access their data and MS says don't try to recover it?
What are they supposed to do?

Microsoft would say you should wait for a fix.

Some users reported that a rollback to the previous version of Windows also cures it.

The point is that the data is probably there unharmed, it's just that Windows isn't accessing it properly.

Trying to run anything within Windows will probably make it worse, because Windows isn't accessing it properly, and tools designed to recover data may not give complete recovery.

Absolutely crazy at this point to upgrade windows. Will keep cureent version until the fix is out.
Canmot afford even to think about the possibility to lose data.
Really a bad bug.

this is why I have updates on manual, ran it 2 days before the anni version, and plan to not run it again until xmas

alphanumeric said:

If you don't want 1607, as far as I know, all you have to do it turn on "Defer Feature Updates". Other patches etc will still be installed.

I believe this option is available on Pro but not Home though?

If I perform/receive an update installation, no drives go missing;
if I perform a clean install, I have random missing drives frequently.

I don't know if it this still works, You can fool windows into thinking your Ethernet connection is metered and it won't do a feature upgrade, just security updates. There is a tutorial here on windows 10 forum.


@Edwin

Edwin said:

If I perform/receive an update installation, no drives go missing;
if I perform a clean install, I have random missing drives frequently.

I had the same problem on a clean install. Here is what I did. I go to the windows update dialog in settings. Leave it open, wait tell it updates. Restart when completed getting all your drivers & other updates. Repeat and it should install Microsoft defender update, sometimes it will say it failed, when it didn't.