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External storage options by Seagate, usually connected by USB, available in many storage sizes and form factors.

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How to partition SSHD drive? (mac early 2015)

I bought this drive: [produit lié absent ou désactivé : IF107-122] and attached it to this adaptor: [produit lié absent ou désactivé : IF107-131]

It shows up in Disk Utility as Mass Storage Device Media (uninitialized)

Simple question: how to initialize it.

The Problem: The Partition button is blanked out. When I try "restore" I get the message "Restore process has failed..." with the following details:

"Validating target...

Validating source...

The volume on device "/dev/disk0" is not of type Apple_HFS or Apple_UFS

Could not validate source - Device not configured

The operation couldn’t be completed. (OSStatus error 6.)

Operation failed…"

Do I need to return this hard drive as incompatible with my computer?

MacBook Pro Retina, 13”, early 2015, OS 10.13.4

Or is there a solution?

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Your link to the adapter is pointing to the same drive as you've listed. Are you using this [produit lié absent ou désactivé : IF107-131]?

Can you tell us what Mac system you have and what is the release of OS-X you are trying to install as well as from what system if different.


Sorry about that, yes, that is the enclosure I am using. I am using MacBook Pro Retina, 13 inch, early 2015, OS 10.13.4, and am trying to install the same OSX. Thanks.


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A virgin drive needs to be prepped by formatting it to GUID and then Journaled file system. Once you’ve created the first partition you can resize it if need be and create a second partition.

But before you do any of this are you planning on using this drive as a boot drive or merely a data drive? If you are planning on using it as a boot drive you should let the OS installer prep the drive as that way the hidden recovery partition is created and the OS is installed in the first active partition. Most people don’t need to create multiple partitions on their boot drive (other than the hidden one).

Update (06/22/2018)

Here's how to post a screen shot here: Ajout d'images à une question existante But before you do that how about reviewing this guide: How to Replace Your MacBook Pro's Hard Drive with an SSD. Disregard the type of drive here as all drives are the same at this level.

I think you'll need a different enclosure here as this SATA to USB adapter I don't think supports SATA III drives as well as the systems USB 3.0. port

I would recommend making it a bootable OS drive so you have a means to fix your internal drive if it needs fixing. Most of the time you'll use this drive for either backup and/or additional storage space.

Here is a better case for your drive: 2.5in USB 3.0 SSD SATA Hard Drive Enclosure this is a more durable case. The IFIXT one is more for someone who is only going to use it a few times.

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I would like to use it as a boot drive but would be happy to settle for a data drive. The problem is that it cannot be prepped because the Partition button in Disk Utility is blanked out as inoperable. For some reason I cannot access any other way to format the drive in Disk Utility, perhaps that is my problem. Could I post a screenshot?


Thanks Dan. the link How to Replace Your MacBook Pro's Hard Drive with an SSD doesn't help me because the problem is -- the drive cannot be partitioned with Disk Utility (Step 3). The Partition button is blanked out! I have read a bunch of how-to's before asking for help -- and always get stuck in the same place. This is the problem-- can't Partition it! Can you help with this step? The must be a reason that function is not available. Thanks.


I guess it wasn't that clear let me restate it: "I think you'll need a different enclosure here as this SATA to USB adapter I don't think supports SATA III drives as well as the systems USB 3.0. port"

You have a Push Me - Pull Me problem! If you remember your doctor Dolittle ;-}

Here we have two faster interfaces the SATA III drive & USB 3.0 interface in your system. But! We have a slower USB 2.0 case! So the dialog between the faster interfaces gets bogged down in the middle. This is why I was pushing you to the other case as its USB 3.0 compliant!

The other direction here is to use an older MacBook Pro with your current setup (USB 2) to see if that gets you over the hump. If it does then you will need the other case as you'll get errors trying to use this case when the I/O gets heavy with your USB 3 system.


Perfect! Thanks!


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Robert Pillers sera éternellement reconnaissant.
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