Dev Drive on Win 11 appears as flash drive, defaults to

[asheroto]

Dev Drive on Win 11 appears as flash drive, defaults to

[pbatard]

1. We don't list drives in alphabetical order. We list them in order of size (so that it makes it a bit less likely for someone to erase a large backup drive when they wanted to created a small bootable USB Flash Drive)
2. Something tells me you altered the creation process of your Dev Drive because, last time we checked, NTFS was not an option, and, per ebe01cc, what we saw when we tested the feature (to filter it out) was that "Microsoft Dev Drives are VHDs consisting of a small MSR followed by a large (50 GB or more) ReFS partition". Did you alter the default Dev Drive creation process in any way?

[pbatard]

I'll also add that the fact that your main Dev drive partition is 10 GB highly suspicious considering the Dev drive creation dialog that explicitly stipulates that the size should be at least 50 GB:

[asheroto]

1. Gotcha, makes sense.
2. I just went with the default options in creating dev drive. I created it using the standard GUI. Here is recreating using the same method. Looks like NTFS is the default selection.

[asheroto]

I do not have that verbiage. Using Windows 11 22H2 build 22621.3593.

[asheroto]

Even with 55 GB it also chooses NTFS, no ReFS or FAT/FAT32 option this time.

[pbatard]

Hmm, your Dev drive creation dialog is surprising as it is different than mine. And I don't have the choice for the file system.
I'm using Windows 11 23H2 22631.3672.

It would seem that the Edition of Windows might be a factor, which, if it's the case, will make it a real pain to try to filter Dev drives out, as it's going to be next to impossible to tell if a VHD(X) with an MSR is a Dev drive or something else that the user created themselves (such as a virtual machine VHD).

[pbatard]

I'm going to have to test if I can replicate your dialog on Windows Pro vs Windows Pro for Workstation (the latter being what I use), but again, if it's an Edition issue, filtering Dev drives out might be very problematic...

[asheroto]

Gotcha.

All 3 drives I created show up.

I realize I should update. Oddly enough, although I've been installing automatic updates, the system did not update to 23H2 automatically so I suppose I will need to run the W11 installer assistant.

I know that with Get-PSDrive it doesn't show the dev drives, so perhaps there is a way. Let me know if you want me to run any commands or beta tests.

Update: I had been targeting a specific release. Removed the target from HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate and now I see 23H2 available. Do you still want me to troubleshoot with 22H2?

[asheroto]

Must have been a transient issue when out of date. Now seems to be fine, dev drive doesn't show. Closing this. Not sure if there was something funky with the OS mid-update or what.

[pbatard]

Yeah, I just tested Dev Drive creation on Windows 11 23H2 Pro, and never got a dialog like yours. Dev drive min size was 50 GB and no file system choice was proposed.