cd \\?\Volume{UUID} doesn't work anymore with Windows 11

[TCOverDecades]

One advantage of TC is that you can directly open a window for an UNC path, without having a drive letter assigned to the related partition.

I use this function over years with several Windows and TC versions, mainly to open TC windows for partitions which are normally not assigned to drive letters, e.g. EFI Boot or Recovery. The command for opening a window can easily be added to the directory list, e.g. cd \\?\Volume{0005d565-2d45-614f-ce7c-df016be3b00}

Unfortunatly this doesn't work anymore after upgrading from Windows 10 to Windows 11. Nothing else changed. Currently using TC 10.00

Christian, I hope you can help a loyal user. I'm using TC for decades and can not imagine how to do without.

Best Regards,
Harald

[ghisler(Author)]

This doesn't work for me on Windows 10 either, I tried with TC run normally and elevated (as administrator). I got the list of volumes via an elevated powershell command:
GWMI -namespace root\cimv2 -class win32_volume | FL -property DriveLetter, DeviceID
Maybe these are the wrong GUIDs? I found this command via Google search.

[TCOverDecades]

Yes, these UUIDs can be shown via Windows Management Instrumentation, but more easy, they are also shown by typing "mountvol" in a cmd shell, doesn't matter if elevated or not. These output have the format \\?\Volume{UUID}.
Of course, if you change to an EFI or Recovery partition, you have to be sure to run TC elevated.
Doing so, it definitely works on all of mine PC systems with Windows 7 and Windows 10 like described above since years. No changes during the OS updates of the last years, but now after update from Windows 10 to 11 it's not working anymore. Reproduced on 2 different PC systems, updated from 21H1 (19043.1288) to 21H2 (22000.258).

If you like to I can also sent you screenshots how I have instrumented TC for this use case. Don't hesitate to contact me directly under my e-mail.

[Horst.Epp]

Yes, these UUIDs can be shown via Windows Management Instrumentation, but more easy, they are also shown by typing "mountvol" in a cmd shell, doesn't matter if elevated or not. These output have the format \\?\Volume{UUID}.
Of course, if you change to an EFI or Recovery partition, you have to be sure to run TC elevated.
Doing so, it definitely works with Windows 7 and Windows 10 like described above. No changes during the OS updates of the last years, but now after update from Windows 10 to 11 it's not working anymore. Reproduced on 2 different PC systems, updated from 21H1 (19043.1288) to 21H2 (22000.258).

If you like to I can also sent you screenshots how I have instrumented TC for this use case. Don't hesitate to contact me directly under my e-mail.

I have tested with the output of mountvol and the access with CD in the TC command line works fine.
but you can't use the stored entries from the hotlist.
Strange, I can use such entries calling TC from my QAP favorites (not the ones which need admin rights).

[TCOverDecades]

Indeed strange. On my Win7/10 Systems „cd \\?\Volume{UUID}“ works fine from TC command line AND hotlist respektively favorites. Several installations, different hardware, also VMs.
If it would make sense to provide more information, please let me know.

[DrShark]

2TCOverDecades
2Horst.Epp

Does it work from button/command line/directory hotlist using a command:

Code: Select all

%COMMANDER_EXE% /L=\\?\Volume{GUID_by_mountvol}\

unstead of

Code: Select all

cd \\?\Volume{GUID_by_mountvol}\

in button bar, command line or directory hotlist?

I experienced that on my Vista laptop when it was alive (it has died again unfortunately),
maybe the same is true for other Windows versions? Details are in this and next posts.

[Horst.Epp]

2DrShark
Yes, the following button works for example

Code: Select all

TOTALCMD#BAR#DATA
%COMMANDER_EXE% 
/s /o \\?\Volume{16c2d09e-ca28-4ffe-91e2-c25774619248}
C:\Tools\Wincmd\TCMDX32.EXE



-1

Also in the hotlist this works
%COMMANDER_EXE% /s /o \\?\Volume{16c2d09e-ca28-4ffe-91e2-c25774619248}

[MVV]

I can confirm that it works under Windows 7 and doesn't under Windows Server 2019.

[TCOverDecades]

YES!

"%COMMANDER_EXE%" /s /o \\?\Volume{UUID}

works perfect, also under Windows 11 and should be used instead of cd \\?\Volume{UUID}.

Thanks very much!

[ghisler(Author)]

I can confirm that a button with
cd \\?\Volume{UUID}
works on Windows 10, but not on Windows 11, but a button with
"%COMMANDER_EXE%" /s /o \\?\Volume{UUID}
works on both.

I will check in the debugger what's wrong.

[ghisler(Author)]

This should be fixed in TC 10.5 beta, please test it!

[ghisler(Author)]

Could someone test this, please?

[Horst.Epp]

No problem here under Windows 11 using
%COMMANDER_EXE% /s /o \\?\Volume{16c2d09e-ca28-4ffe-91e2-c25774619248}

[white]

Could someone test this, please?

Tested mounted drives: SSD drive, hard drive, camera drive, cardreader in my printer/scanner drive.
Tested volume with no mount points: Recovery volume.

Seems to work from command line and button.
Doesn't work in Synchronize dirs, but assume that's not supported.

Tested using Windows 11.

[ghisler(Author)]

Doesn't work in Synchronize dirs, but assume that's not supported.

Indeed that's currently not supported.