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Mounted/unrecognized external drive

I'm trying to backup my Mac desktop using an Iomega 1T drive connected by a USB. The drive is not recognized in Time Machine. When I go to the disk utility, I can see the device, but it won't mount. Any suggestions?


Thanks, Perplexed in Pennsy.

iMac 21.5″, macOS 10.13

Posted on Jun 19, 2020 11:15 AM

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Posted on Jun 19, 2020 11:36 AM

Have you formatted the drive mac OS Extended and GUID partition scheme? You can try to mount it, and/or partition and/or erase to get it to mount it. You should erase it anyway because most external drives are either formatted for Windows and/or have unnecessary software on them - an external drive does not need anything on it in order to function.



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Question marked as Top-ranking reply

Jun 19, 2020 11:36 AM in response to owlsfan85

Have you formatted the drive mac OS Extended and GUID partition scheme? You can try to mount it, and/or partition and/or erase to get it to mount it. You should erase it anyway because most external drives are either formatted for Windows and/or have unnecessary software on them - an external drive does not need anything on it in order to function.



Mounted/unrecognized external drive

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