Missing drive

Did you try removing it and reinstall it? as you are running a preview version this may need to be reported to the feedback hub along with info about your system, seeing you have a few extra drives installed, suggest when doing an upgrade of a beta software
remove any plugged in devices except KB/Mouse until the upgrade is completed than reinstall them.

Also as an Insider it is important to keep informed of what is happening with the Preview builds by reading the Feedback Hub and forums, as this issues has been reported before.

Hi, Joe.

Thanks for the note.

And I made the Hub contact , and was Mark, the tech that I talked, send me to this Forum.

He told me that the tech support Hub is for Home version, not for Insiders...

Thats why Im asking for Help.

Btw, I cant reinstall this version, cause I made the Insider install, not downloaded It...

Sum of the Opera: 2 Bad 4 Us all !

:-(

Is the Drive showing up correctly in Disk Manager?

And have you used the Troubleshooter in Settings/Updates & Security  Troubleshooter tab. You might have to scroll down in the right panel to see the  Hardware and Devices Troubleshooter.

What sort of disk is G:? Is it a partition on a hard disk, or a separate hard disk? Is it possible that some other disk (such as a USB stick) has been substituted for drive G:?

How do all of your drives appear in Disk Management? Possibly the disk or partition that was G: is still there, but with no drive letter.

Was it a spanned drive? I just updated to 17040 and just lost my 10TB spanned drive, it shows up as raw in Disk Management.

I'm having this issue with a spanned drive after this update. Shows up fine and is accessible when I boot into WinPE. It's definitely a problem with the update and not the disk/filesystem.

That is good to know that the data is still there. Does a spanned drive require a Dynamic Disk?

There was a change to ReFS recently. An ReFS partition, if accessed by version 1709 of Windows 10, was auto-converted to ReFS 3.3, making it appear RAW to any older version of Windows.

I am wondering if there is more tinkering going on with filesystems, such as NTFS, or Dynamic Disks, etc.