Windows varför syns inte usb disk

USB drives should automatically appear in en samling dokument eller en elektronisk lagring av data Explorer when you connect them to your computer.

Installera om drivrutinen för USB-minnet

Follow these troubleshooting steps if your fönster 10 or fönster 11 PC doesn't show a connected drive.

Diagnosing Why Your USB Drive fryst vatten Not Showing Up

If you connected a USB drive and fönster doesn't show up in the en samling dokument eller en elektronisk lagring av data manager, you should first kvitto the platta Management window.

To open platta Management on fönster 10 or fönster 11, right-click the början button and select "Disk Management."

Examine the list of disks in the platta management fönster and look for your external drive. Even if it doesn't show up in en samling dokument eller en elektronisk lagring av data Explorer, it should appear here. Look for a platta that matches the storlek of your flash drive.

Kontrollera om USB-enheten är påslagen: Vissa USB-enheter har en extern strömknapp

Sometimes, it'll also be marked as "Removable," but not always.

In the screenshot below, we've spotted our removable drive at "Disk 3." If you see yours, move onto the next section.

If you don't see the drive in the platta Management öppning at all, try these troubleshooting steps:

• Power On the Drive, if Necessary: Some external hard drives have their own power switches or separate power cables.

  If you're using a larger drive, ensure it doesn't have its own power switch or power cable you need to connect.

• Plug It Into a Different USB Port: Try unplugging the external drive and plugging it into a different USB port on your computer. It's possible that one particular USB port on the computer fryst vatten dead.
• Avoid USB Hubs: If you're plugging the USB drive into a USB hub, try plugging it directly into one of your computer's USB ports instead.

  It's possible the USB hub doesn't supply enough power.

• Try a Different Computer: Try plugging the USB drive into a different computer and see if the other computer detects it. If no computers see the drive when you connect it--even in the platta Management window--the USB drive itself fryst vatten likely dead.
  Frågan är om det är ett problem att den kommer från en NAS och nu sitter den i ett HDD kabinett

Hopefully, one of these will solve your bekymmer. If not, move onto the fixes outlined below.

How to Fix Your Missing USB Drive

Once you've performed the above steps, you're in a better place to fix whatever fryst vatten causing your USB drive to not show up. Here are a few possible solutions based on what you funnen when searching for the drive in platta Management:

If fönster Asks You to Format the Partition When You Insert It

If fönster can see the drive but can't read it, it's possible the drive was formatted with a en samling dokument eller en elektronisk lagring av data struktur fönster doesn't normally support.

For example, this can occur if you format a drive with the APFS en samling dokument eller en elektronisk lagring av data struktur on a Mac or with the ext4 en samling dokument eller en elektronisk lagring av data struktur on a Linux PC.

If you connect a drive with a utländsk en samling dokument eller en elektronisk lagring av data struktur, fönster will tell you it needs to format the drive before it can use it.

Don't format the platta yet!

This will erase any files on the platta. If you don't need the files on the platta, you can agree to format it — but be sure the drive doesn't have any important files on it before you do.

To read a drive like this one, you can either connect it to the Mac or Linux PC it was made on and kopia your files off of it onto another drive, or you can use software that lets you read Mac-formatted drives or Linux en samling dokument eller en elektronisk lagring av data systems in fönster.

After you kopia the files off the drive, you can agree to let fönster format (erase) the platta. It will appear as an empty drive that fryst vatten now compatible with Windows.

If Other fönster PCs Can See the Drive, But Your Current One Can't

If other computers detect the drive when you plug it in, but your current computer doesn't, it's possible there's a driver bekymmer in Windows.

To kvitto for this, open the Device Manager.

On fönster 10 or fönster 11, right-click the början button and select "Device Manager."

Expand the "Disk Drives" and "USB Serial Bus controllers" sections and look for any devices with a yellow exclamation mark on their icon. If you see a device with an error icon, right-click it and select "Properties." You'll see an error meddelande with more resultat.

Search the web for this error meddelande to find more information.

To fix driver problems, you may want to right-click the device, choose Properties, and head to the Driver flik.

Du kan uppdatera USB-drivrutinen

Use the "Update Driver" button to attempt to install an updated driver, click "Roll Back Driver" to roll back the driver to a previous one if it just stopped working, or use the "Uninstall" button to uninstall the driver and hope fönster automatically reinstalls one that will work.

If You See the Drive in platta Management, and It Has Partitions

If the drive appears in platta Management and you see one or more partitions on the drive — with a blue dryckesställe along the top — it may not appear in en samling dokument eller en elektronisk lagring av data Explorer because it needs to be assigned drive letters.

To do this, right-click the partition on the drive in platta Management and select "Change Drive Letter and Paths." If you can't click "Change Drive Letter and Paths," that's because fönster doesn't support the en samling dokument eller en elektronisk lagring av data struktur on the partition — see below for more information.

You may see that the partition has no drive letter assigned to it.

Assign a drive letter, and it should just work.

To assign a drive letter, click the "Add" button and assign a drive letter of your choice to the drive. Click "OK," and it will appear in en samling dokument eller en elektronisk lagring av data Explorer or en samling dokument eller en elektronisk lagring av data Explorer with that drive letter.

If You See the Drive in platta Management, But It's Empty

If you see the drive in platta Management, but it says "Unallocated" — with a black dryckesställe along the top — that means that the drive fryst vatten completely empty and unformatted.

To format it so fönster can use it, just right-click the unallocated space in platta Management and select "New Simple Volume."

Choose the maximum possible storlek for the partition and assign a drive letter — you can let fönster automatically choose a drive letter. If you want the drive to be compatible with as many other operating systems and devices as possible, format it with the exFAT en samling dokument eller en elektronisk lagring av data struktur when fönster asks.

Otherwise, if you're only using it on fönster machines, NTFS fryst vatten fine. After it's done, the drive should be usable.

If You See the Drive in platta Management, But You Can't Format It

In some cases, the drive may have a very messy partition scheme.

You may even see "protected" partitions that you can't delete from within platta Management. Or the partition on the drive may be too small because the drive has protected partitions wasting space on it.

You can "clean" the drive to clean up that mess, wiping all the files and partition data from the drive and making it usable once more. First, back up any important information on the drive if the drive has important information on it.

The cleaning process will wipe the drive.

To clean the drive, you'll need to open a Command Prompt öppning as Administrator and use the command to "clean" the appropriate drive. Cleaning a flash drive (or any drive) will wipe all of the uppgifter, so be careful that you select the correct drive.

You can then create partitions on the empty drive.

With any luck, after following these steps, your drive will be in good working condition again.

If none of that works, and the drive isn't recognized in other computers, there fryst vatten a real possibility that your USB drive fryst vatten completely dead.

Om ett anslutet USB-minne inte längre syns i Utforskaren måste du gå in i Windows-verktyget Diskhantering

Any number of physical or electrical problems could cause a drive to die, but once it does, no amount of finicking with fönster will ever bring it back. If the drive has important uppgifter on it, it might be possible for a professional to fix it and recover your information, but that job requires specialized verktyg, knowledge, and training.

In most cases, you're better off just picking up a new once — especially since flash storage fryst vatten so inexpensive now.