External hard drive will not mount

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External hard drive will not mount

I bought a Mini Mac from Apple last month and my 6 TB external hard drive with 30 years of images, mounts on other Apple computers (my 13" Macbook, for example), but not on the Mini.

If I leave the HD off, start the Mini, then start the HD, the HD does not mount. Use the Disk Utility, the HD is gray out but will mount.

Reboot the Mini with the HD left on so that it starts up with the Mini, it will not mount, but the HD is grayout in the Disk Utility, and if mount is tried, an error is created.

Any suggestions?

Todd

Mac mini

Posted on Dec 7, 2023 7:25 PM

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Answer 1

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den.thed

Level 10

90,736 points

Dec 7, 2023 7:42 PM in response to rtcary2

What external hard drive and how is it connected to the Mac mini?

It sounds like the external drive is using more power to spin-up and mount, than the USB-A port can provide.

If your plugging it into one of the Mac mini's USB-A ports, try moving it to one of the USB-C ports using a USB-C to USB-A adapter.

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Answer 2

rtcary2 Author

Level 1

9 points

Dec 8, 2023 1:07 PM in response to den.thed

My external HD is a QNAP that has it's own power supply, so power is not the problem. It connects via a USB and as previously stated, it connects to other OS X computers that I have access to via the USB port.

Todd

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External hard drive will not mount

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