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An SSD, or Solid State Drive, is a type of storage device that uses NAND-based flash memory to store data.

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Can't access OWC disk over PCIe adapter

Hi guys,

I have issue with OWC SSDAD2MB05 480GB. I am trying to access this drive from my MP3.1 over PCIe adapter (other drives working perfectly).

But if I connect this drive after start it's taking longer before I can see icon on the desktop and I can't get access over DIsk Utility - just stuck on "loading disks" screen. Over terminal I can see that there is GUID_partition_scheme disk1, EFI disk1s1, Apple_APFS disk1s2 but I can't delete partitions or rename etc...

I also tried USB installer but it's again stuck on Disk identification ...

Do you think that this is an issue with disk ? It was taken from broken MBP - motherboard fails - or it's have something to do with APFS partition ?

Thank you for any advice/ideas

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The drive is running APFS which only a Mac running a newer version of MacOS can access.

Your config won’t work as a MacPro 3.1 highest supported OS is OS-X is El Capitan (10.11.6) which only supports HFS+ volumes. You need to be running Mojave or newer.

Giving your testing the OWC SSD won’t play in the PCIe adapter you have. Sorry😩

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14 Comments:

Sorry, forget to write that -There was Big Sur on MBP and I am running Monterey OCLP on MP 3.1

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@roboscrap - where did this drive come from? This could be encrypted then.

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@danj it’s from broken MBP - how can I find if it’s encrypted? And if it is can I do anything with that ? I just need format this drive - I am not interesting about data on it.

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@danj added full list of diskutil from terminal, that all what I can get from Drive no other access :( not even in Windows OS

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@roboscrap you need to delete the partitions, then repartition it as a flat drive I would just setup HFS+ if this will be a data drive.

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Rob will be eternally grateful.
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