Windows 7 Forums

Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.


Windows 7: How to delete "Unknown Disk 3"

13 Mar 2015   #11
fireberd

Windows 10 64 bit
 
 

It is enabled. Been enabled since I built the PC, but this problem just cropped up recently.


My System SpecsSystem Spec
.
13 Mar 2015   #12
Boozad

W7 Pro x64 SP1 | W10 Pro IP x64 | W8.1 Pro x64 VM | Linux Mint VM
 
 

I had a similar sort of problem occur, it's a bit of a long read but it's here. Strange USB Drive Showing in Device Manager

Switching Legacy USN to Auto solved it for me. It's worth a shot.
My System SpecsSystem Spec
13 Mar 2015   #13
fireberd

Windows 10 64 bit
 
 

Thanks, just tried it but didn't make any difference.
My System SpecsSystem Spec
.

13 Mar 2015   #14
jumanji

Windows 7 Home Premium 32 bit
 
 

OK, again a shot in dark. But no harm in trying. Do a drive cleanup

Download v 0.8.1 of the drivecleanup.zip from Drive Tools for Windows.

Unzip it to a folder, say drivecleanup.

You will have two folders Win32 and x64 each containing DriveCleanup.exe for 32 bit and 64 bit respectively.

Remove all USB storage devices from your system (except your Keyboard and mouse) and reboot.

Right click on the DriveCleanup.exe and run as administrator. (Use the DriveCleanup.exe file appropriate for your bit version of Windows.).

After the clean up act, reboot and check whether your system is still showing the non-existent drive.

( When you plug in your USB devices after this cleanup these will be installed afresh. What you have done is to remove all non-present devices and drive letters, Registry entries associated with them and start with a clean slate. Hopefully that should resolve the problem.)
My System SpecsSystem Spec
13 Mar 2015   #15
ComputerGeek

Desk 1: Win 7 Pro x32; Desk 2: Windows 10 x64
 
 

Open Device Manager. Click View->Device by Connection. Expand ACPI devices till you get to PCI bus. Then expand everything under PCI bus.Can you find the disk in Dev Mgr when viewing by connection? what's it connected to? To start, try to see if it's a disk with a PCI, USB or virtual bus connection.
My System SpecsSystem Spec
14 Mar 2015   #16
fireberd

Windows 10 64 bit
 
 

Drive cleanup did not fix it. And nothing showing in Device Manager. The device is not present so nothing to show.

I also did a Registry search for "Disk 3" and didn't come up with anything.
My System SpecsSystem Spec
14 Mar 2015   #17
fireberd

Windows 10 64 bit
 
 

Amazing! I right clicked on the Disk 3 entry and then clicked Properties. I clicked Uninstall driver and now its gone!
My System SpecsSystem Spec
14 Mar 2015   #18
Boozad

W7 Pro x64 SP1 | W10 Pro IP x64 | W8.1 Pro x64 VM | Linux Mint VM
 
 

Brilliant, I just had a look at Disk Management and noticed I had a Disk 3 that certainly wasn't present, it claimed it was a USB drive. Followed what you did and it's gone. Top stuff!
My System SpecsSystem Spec
14 Mar 2015   #19
fireberd

Windows 10 64 bit
 
 

Sadly, when I rebooted it came back.

There's nothing connected that could be considered (or Windows thinks) its a USB drive. I have an external USB 3.0 drive but its properly recognized when I connect it. I have my recording studio peripherals (a Behringer BCF2000 and a Roland Studio-Capture and a Frontier Tranzport wireless controller) but they are powered off or disconnected in the case of the Tranzport. I have USB transceivers for a Microsoft wireless keyboard and a Logitech wireless mouse and an iLok USB key which shows up as a "dongle" in the Device Manager. I have a bank of 5 USB connected CD/DVD burners, that are powered off, but when powered on show up correctly.

As both Win 7 and Win 8.1 (dual boot) show the same things, it sort of goes back to the motherboard/BIOS (?). It has only been showing up for a month or so that I recall. I don't remember having it before. I have upgraded SSD's but they are SATA connected, not USB and the drives show up properly. The BIOS has not been upgraded (the last BIOS update for the motherboard was 2012).
My System SpecsSystem Spec
14 Mar 2015   #20
fireberd

Windows 10 64 bit
 
 

I disabled the device and now its not showing in the Disk Management panel. But that is not really a fix.

I'll have to let it go for a while. I have to setup for a recording session coming up at 11 AM (eastern).
My System SpecsSystem Spec
Reply

 How to delete "Unknown Disk 3"




Thread Tools Search this Thread
Search this Thread:

Advanced Search




Similar help and support threads
Thread Forum
Windows 7 will not boot, infinite startup repair loop + "unknown disk"
First time posting here, so I apologize if I my post is too vague. I started up my laptop (Alienware M14x, Windows 7 64 bit - not sure if it's Ultimate, Home Premium, etc...) yesterday and it displayed a message saying that Windows had failed to boot. I restarted and attempted starting it in...
Installation & Setup
HDD shows in "Device Manager" but not in "DiskPart"or" Disk Management
Hi Guys, any ideas how to access my external hard drive device manager can see it but it does not appear in disc management. I use this HDD perfectly in my car HDD player. But when I try to connect it to my Laptop, it does not show up in disk management. Please check the attached screen...
Hardware & Devices
changing an ".ost"file to open with "unknown" application
I changed my outlook email .ost file to open with auto cad by mistake. Initially it was opening with an Unknown application. How can I enable it to open with an unknown application again? please help
Software
Does WLM "completely" delete email without "Compact Datadases"?
With XP's Outlook Express- When you'd delete email from their Folders, they weren't "completely deleted..." until you Compacted Databases & Reboot (without CD, OE would Not release from backup..., and Bloat...!). ~~~~ Q1?- I now use WLM 2009 POP3/only (I like 2009's GUI, Much better than...
Browsers & Mail
How to delete the "Windows" folder from external disk?
I took the 500GB disk from my dead notebook and decided to keep old data within it as an external storage in a USB case. The drive was bootable as Win7 pro x64, but now I want to remove all system folders from it, keeping all backups and private data untouched, but I need special rights for...
General Discussion
So I just miss-clicked "Delete Volume" in Disk Management
Hello, I was just checking my new disk in Disk Management, and I was about to extend the volume I already had, when I miss clicked and deleted the whole volume. After some research it seems that I can recover it, because the data isn't lost yet, but I didn't find any solutions for win7 yet....
Hardware & Devices


Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 19:59.

Twitter Facebook Google+



Windows 7 Forums

Seven Forums Android App Seven Forums IOS App