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Other Hardware and Peripherals Other Apple systems and peripherals discussions including the Apple Watch.

usb hdd only seen by diskutility and unusable

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Member Since: Sep 19, 2012
Posts: 3
oldsk00lnl is on a distinguished road

oldsk00lnl is offline

I have a early 2012 macbook pro 2.8 Ghz intel core i7
currently running OSX 10.8.1 Mountain Lion

I used a 1TB usb hdd (mac encrypted) to use for time machine.
It gave me trouble so i formatted it a while back and didnt have the time to use
it with time machine ever since.

Today i tried but when inserting the usb it only shows up in disk utility, but i can not format or unmount or do anything.

I've tried some things through terminal but no succes.

any ideas?

i tried other ways to get it visualized and true crypt sees the drive like this

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Member Since: Sep 08, 2007
Location: Spain
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Mac Specs: 15" Macbook Pro 2.0Ghz i7 8GB AMD 6490M 256OCZ Vertex 4 SSD | iPhone 5S 16GB

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What happens when you use the partition tab and try set it up with a single partition?
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Robert Jacobs

Member Since: Sep 17, 2012
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needs partitioning with single apple partition. Could be a partition table issue, but if it's encrypted, that would explain the access issues
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Member Since: Sep 19, 2012
Posts: 3
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@halo200, i cant do anything at the partition tab.

@Robert: it is just set up as one disk.. not partitioned in various partitions.
and it is not encrypted, it was before. and if it was encrypted mac osx is supposed to prompt a passwordfield like it did before i guess.

maybe use linux to fix this? i just want to reformat the drive now
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