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Fix: USB Attached SCSI (UAS) Mass Storage Device not Showing
Everything you need to know about external USB 3.0 SCSI disk device
8 min. read
Updated onJanuary 19, 2024
updated onJanuary 19, 2024
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Key notes
USB 3.0 hard drivesare becoming more and more popular over the past few years. However, since the introduction of Windows 10, some users have had problems connecting their USB drives to the computer.
Affected users state that their USB 3.0 external drives are not detected in Windows 10.
So, we came up with a few solutions for this problem, and you can check them out below.
Why does my computer not detect my external hard disk when plugged in?
WD devices are great, but many reported thatWD My Passport Ultra isn’t detectedon their PC. If this happens, the problem is most likely an improperly formatted drive.
Your drivers can also be one reason why anexternal hard drive is not showing up, and to fix that, you might have to reinstall the USB and the external drive drivers.
In some rare cases, it’s possible that you havefatal errors on the external hard drive, but that can be fixed by following the solutions from this guide.
USB 3.0 drives offer high transfer speeds, but many users have reported issues with their USB 3.0 external drives. Speaking of issues, these are some of the common problems with external drives:
Without further ado, let’s see all the solutions in more detail!
How do I fix USB Mass Storage device not showing?
1. Update your USB 3.0 controller driver
If you can’t use your USB 3.0 external drive on your PC, the problem might be an outdateddriver. That means you can fix the problem by downloading the latest driver for the USB 3.0 controller.
You can download the necessary driver right from your motherboard manufacturer’s website.
However, if you don’t know anything about your motherboard, here’s alist of the best softwareto get all the needed information.
It sounds easy, but it’s really not for many users. That’s why we recommend using specialized software to update your drivers automatically because it can find the newest driver versions from a huge database with one click.
⇒Get IObit Driver Booster
2. Disable the USB selective suspend setting
Note:Before changing your power settings, create a restore point in case something goes wrong.
3. Edit your registry
A great method which can be used to resolve USB 3.0 not detected on Windows 10 PC would be to edit your Registry entries. However, you should respect the steps below to keep your system safe.
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UnderUniversal Serial Bus Controllers, findUSB Mass Storage Device. Right-click on it and selectProperties.
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Go toDetailstab, and from Property, chooseDevice instance path. Right-click on the path, and chooseCopy.
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OpenRegistry Editor.
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Go to the following path:ComputerHKEY_LOCAL_MACHINESYSTEMCurrentControlSetEnumUSBVIDDevice Parameters
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In the right pane of theDevice Parameterskey, look for the DWORD namedEnhancedPowerManagementEnabledwhich must be showing itsValue dataas 1. If this value isn’t available, you might have to create it manually.
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Double-click on it, and change its value to 0. ClickOK.
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Restart your computer and try to connect your drive again.
Note:If youcan’t edit your Windows 10 registry, read thishandy guide and find the quickest solutions to the issue.
4. Set the new partition on your removable drive
If you’re connecting your hard drive for the first time, there’s a chance that you don’t have any partitions created on it. Therefore, Windows 10 won’t recognize it as a hard drive.
Thus, your USB 3.0 external drive will not be detected in Windows 10.
But your disk will be recognized by the Windows Disk Management tool, so we will check if Disk Management recognizes the external hard drive, and our future actions will depend on the results.
If you are sure that you have data on that drive, try to connect it to another computer and back up the data first.Formatting will erase all data from the drive!
Note:If even Disk Management can’t recognize the hard drive, your problem might be a little complicated.
First, try some basic solutions, like checking if the driver is up to date or trying to plug it into another USB port in case of a bad USB port.
If the Disk Management tool seems too complicated to use, there are third-party solutions that you can use to format your drive.
We recommendParagon Hard Disk Manager, a simple application that can help you manage your disk partitions, backup data, and recover lost files.
This professional tool features integrated backup functions that allow you to save your data before working on a hard drive. That’s a very handy feature for unpredictable and unpleasant situations.
The software also comes with many other functions forpartitioning,but it also optimizes your PC to use its resources efficiently.
5. Disconnect your drive and go to BIOS
If a USB 3.0 external drive isn’t detected in Windows 10, you might want to try this simple workaround. According to users, you just have to disconnect your drive, enterBIOS, and reconnect your drive.
After doing that, you can exit BIOS and start Windows 10 normally.
This sounds like an unusual solution, but a few users reported it worked for them, so you might want to try it out.
If you don’t know how to access the BIOS, here’s anexpert guideon how to do that.
6. Try using a different cable
If your PC can’t detect a USB 3.0 external drive, the problem might be related to your cable. According to users, they fixed this issue simply by replacing their cable.
If you’re having this problem, your cable might be broken, so be sure to replace it and check if that solves the issue.
7. Update your drive’s firmware
Many users reported that their external drive is recognized only when using a USB 2.0 port. If you have this problem, you might want to try updating your device’s firmware.
To update your firmware, you need to connect your external drive to a USB 2.0 port, download the latest firmware from the drive’s manufacturer, and install it.
Once the firmware is installed, you should be able to use your external drive with a USB 3.0 port.
Remember that firmware update is an advanced and potentially dangerous procedure, and if you don’t do it properly, you might cause irreversible damage to your drive.
8. Update the USB Attached SCSI (UAS) Mass Storage Device driver manually
9. Change the drive letter
10. Reinstall your drivers
That’s about it; we hope at least one of these solutions helped you to solve the problem with the USB 3.0 external hard drive not being detected in Windows 10.
For more solutions, check out our guide on what to do if yourexternal hard drive is not showing up in Windows 10/11.
In case you seeRestart Required – Your PC Needs to be restarted to finish setting up this device: Xvdd SCSI Miniportpop-up, read this guide for help!
If you have any other questions or suggestions, please leave them in the comments section below, and we’ll surely check them out.
More about the topics:external USB drive,windows 10
Ivan Jenic
Windows Hardware Expert
Passionate about all elements related to Windows and combined with his innate curiosity, Ivan has delved deep into understanding this operating system, with a specialization in drivers and driver troubleshooting.
When he’s not tackling diverse driver-related problems, Ivan enjoys watching good movies and spending time hiking with his family and friends.
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Ivan Jenic
Windows Hardware Expert
Ivan has delved deep into understanding the Windows OS, with a specialization in drivers and driver troubleshooting.
