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MacBook Pro new hard drive

I have decided to replace my hard drive to try and get some degree of speed back into my mid2012 model MacBook Pro.


I have done a time capsule back up and have the new sdd ready to be installed, but one things I can’t get to the bottom of is what do I need to do to reinstall the OS.


Do I need to download an installer for the OS and run that, or


Do I replace the hard drive and then can I format it and then download the OS from the recovery mode on boot up?


I welcome all advice!

MacBook Pro 13", macOS 10.14

Posted on Jan 13, 2020 10:13 AM

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Question marked as Top-ranking reply

Posted on Jan 13, 2020 10:44 AM

mr_george18 wrote:

Thanks for both replies, but I don’t have a usb to sdd sata cable so I can’t clone.



Boot clone https://discussions.apple.com/docs/DOC-10081

How to use Time Machine to back up or restore your Mac: https://support.apple.com/en-us/HT201250

How to reinstall macOS from macOS Recovery: https://support.apple.com/en-us/HT204904


8 replies
Question marked as Top-ranking reply

Jan 13, 2020 10:44 AM in response to mr_george18

mr_george18 wrote:

Thanks for both replies, but I don’t have a usb to sdd sata cable so I can’t clone.



Boot clone https://discussions.apple.com/docs/DOC-10081

How to use Time Machine to back up or restore your Mac: https://support.apple.com/en-us/HT201250

How to reinstall macOS from macOS Recovery: https://support.apple.com/en-us/HT204904


Jan 13, 2020 10:22 AM in response to mr_george18

Download CarbonCopyCloner ($40ish, bomboch.com). Duplicates the internal drive, including boot sectors. Also good regular-use backup program. But duplicate the drive and just install it in the old machine.


TimeMachine trickle-feeds feeds on an active system, CCC best used relatively quiet system at end of day. Both good, both should be used.

Jan 13, 2020 10:56 AM in response to mr_george18

You have a couple options but which you choose depends on whether the SSD is large enough. If the SSD is large enough to migrate everything on your current hard drive then you can simply restore using your TM backup. That said, TimeCapsule isn't exactly my favorite choice for restoring - WiFi isn't fast enough so you'll need to use an Ethernet cable. My personal favorite, again assuming the SSD is large enough, is to connect the SSD to the computer using an SATA<->USB cable, a drive dock, or an external enclosure and clone the internal drive to the SSD. This lets you test the SSD before you go about taking the computer apart and installing the SSD.


If the SSD isn't large enough to transfer everything TM may be your best choice because you can use TM to select specific folders to transfer. I used this option when I migrated one of my work computers to an SSD. I migrated everything but my music and video files. You can also install the drive and restart in Internet recovery and install the OS first and then manually install the software you want to use on it. Later you can transfer data from your TC.


BTW, one issue we've found is that the internal SATA ribbon is often worn in older unibody MacBook Pros. I've taken to replacing them as a matter of course when upgrading to an SSD.

Jan 14, 2020 9:13 AM in response to mr_george18

To close this down I did the following:


A full time machine back up.


Replaced the hdd with a sdd drive.


Turned the MacBook on in recovery mode


Macbook launched internet recovery


Restarted the MacBook in recovery mode and erased the new disk - this formatted it.


Still in recovery mode did a full reinstall from my external hard drive.


Boom everything is now super fast and I’ve saved myself the price of a new MacBook.

MacBook Pro new hard drive

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