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Kerner
2 years ago

Hello,

you have to plug it into a blue USB 3.1.

Otherwise, you need an additional power supply for external hard drives.

https://www.amazon.de/Sabrent-HB-UMP3 single network switch power supply/dp/B00TPMEOYM/ref=sr_1_11

Otherwise open disk management and see if the disks are detected.

That’s it.

Right-click the Windows icon at the bottom left.
Then a selection window starts.
Here you can then click “Data carrier management”.

Here you can see all disks that Windows recognizes.
Just have to be careful not to change the Windows hard drive.

Hansi

xxCORNHOLIOxx
2 years ago
Reply to  Kerner

that is ne 2.5″ HDD that have no external power supply

Kerner
2 years ago
Reply to  xxCORNHOLIOxx

That’s it.

I’ll give you an example.

Hansi

JungbauerDR
2 years ago
Reply to  Kerner

2.5″ hard drives only need the 5V from the USB port. Only the large 3.5″ need additional 12V.

JungbauerDR
2 years ago
Reply to  JungbauerDR

and it doesn’t matter whether USB 2.0 or 3.1.. it is always 5V and the maximum power of USB 2.0 is enough for an external hard drive

Kerner
2 years ago

That’s it.

but if it were, he wouldn’t ask.

Well, maybe there’s enough formatting.

Hansi

xxCORNHOLIOxx
2 years ago

almost every 2.5″ HDD also comes clear with USB 2.0, in the least cases the power is not sufficient

Mark Berger
2 years ago

Check both and see if they are displayed in Crystal DiskInfo… If so, please post screenshots of the displayed SMART values.

datarescue
2 years ago

To help you, we need some additional information, for example, we start with …

Are the hard drives failing at the same time?

Did anything happen to the hard drives or your computer?

Do the hard drives not make any noise in the attempts to access?

Are the hard drives still detected on another computer?

JungbauerDR
2 years ago

Hi!

I’d first test the two HDDs on another computer. It is strange that two different hard drives suddenly give up the mind. For example, it is MacOS formatted (e.g. HFS+) disks that are now connected to Windows? -> here you should be displayed at least in the disk management (in the computer administration).

If the hard drives are still not recognized at all at the other computer, only a professional rescue comes into question as here:

https://www.jungbauerdatenrettung.de/datenrettung/hdd

I sit in Germany (Ingolstadt) and have a fair fixed price even in hardship cases where the read/write heads need to be exchanged.

Lg Tobias Jungbauer

KaLand0
2 years ago

Are there any data on it? If yes then secure and load on a USB stick.

If not, simply select and format the device manager. LG