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R5152

macrumors newbie
Original poster
May 18, 2020
13
1
Recently my MacBook Pro got broken, model A1278, mid 2012. There is something with the logic board and it needs to be replaced. Now I'm thinking about buying a brand new one and there is something that concerns me.

HDD is still working, meaning that I can still use it and transfer all the data from it to a new MacBook during the initial setup using Migration Assistant (at least in theory).

So I have several questions about it:
  • macOS version
The new MacBook will have the latest macOS version, whilst my broken MacBook's HDD has 10.12.6. Will this fact affect the process of the migration? Do I have to somehow update macOS on the HDD? So the system supposedly will be downgraded from Catalina to Sierra. Is it possible?
  • File system
HDD got HFS+ and the newest MacBooks got APFS. Will this fact affect the process of the migration?
  • Transferred information
Will all of my data such as settings, applications, profiles, passwords, etc. be transferred?
  • T2 security chip
The newest MacBook got a T2 chip in it, so if the migration is successful, will the old data from MacBook where there was no such chip conflict with the new MacBook's system?

So if anyone can tell me more about Migration Assistant and the related questions please do.

Thanks!
 

Dave Braine

macrumors 601
Mar 19, 2008
4,002
359
Warrington, UK
The new MacBook will have the latest macOS version, whilst my broken MacBook's HDD has 10.12.6. Will this fact affect the process of the migration? Do I have to somehow update macOS on the HDD? So the system supposedly will be downgraded from Catalina to Sierra. Is it possible?
Migration Assistant transfers your document, files, Account settings from your old Mac to your new Mac. The MacOS on the different Macs will make no difference.

  • File system
HDD got HFS+ and the newest MacBooks got APFS. Will this fact affect the process of the migration?
  • Transferred information
Will all of my data such as settings, applications, profiles, passwords, etc. be transferred?
  • T2 security chip
The newest MacBook got a T2 chip in it, so if the migration is successful, will the old data from MacBook where there was no such chip conflict with the new MacBook's system?

So if anyone can tell me more about Migration Assistant and the related questions please do.
As this Apple webpage, dated May 2020, makes no mention of any of your questions, you will have no worries.
 

R5152

macrumors newbie
Original poster
May 18, 2020
13
1

Fishrrman

macrumors Penryn
Feb 20, 2009
29,278
13,376
Take the drive OUT OF the broken MBP, and put it into an external USB3 enclosure.

They're dirt cheap, one like this will do the job:

You'll need a Phillips #00 driver to open the MBP.
You can use a TORX T-6 to "take the nubs off" the drive (or just CAREFULLY use a pair of needle-nose pliers to loosen them, then remove them with your fingers).

When you get the new MB, just follow the instructions from my "canned posting" which I reproduce below:
ONE EXCEPTION: you will not need to create a backup -- just use the ORIGINAL drive (in the external enclosure)
===================
Fishrrman's "you can do it!" routine for migrating to a new Mac:

If you follow my instructions below, I guarantee a success rate of 98%:
PRINT OUT these instructions and check them off as you go along.

1. BEFORE you do anything else, run a "final" backup on your old Mac. Use an external drive for this. It can be either TM or a cloned backup using CarbonCopyCloner or SuperDuper. I prefer CCC.
I STRONGLY RECOMMEND THAT YOU DO NOT USE TM AS YOUR "MIGRATION EXTERNAL DRIVE". INSTEAD, USE EITHER CCC OR SD. Things will go better this way!
2. Shut down the old Mac and disconnect the external drive
3. Take the new Mac out of the box and set it up on the table. DO NOT PRESS THE POWER ON BUTTON until step 8 (read on). You don't want to begin setup until "the right moment".
4. If you're using an external display, connect the display using the usb-c/VGA adapter/cable that you have
5. Connect the keyboard and mouse if you use them. I STRONGLY SUGGEST that you connect them DIRECTLY to the Mac.
6. If you use a hub, leave it DISCONNECTED for now
7. Connect your backup drive -- use a usb-c adapter if needed.

OK, we're ready-to-go, so let's get goin':
8. Press the power on button for the first time.
9. The new Mac may ask for help "finding" the keyboard, just follow instructions.
10. Begin setup. At the appropriate moment, setup assistant will ask if you wish to migrate from another Mac or drive. YES, you want to do this.
11. "Aim" setup assistant at the external backup. Setup assistant will need a little time to "digest it all". BE PATIENT and give setup assistant the time it needs.
12. You will now see a list of things that can be migrated, such as applications, accounts, settings and data.
13. I suggest that you select ALL of them.
14. Let setup assistant "do its thing". It's going to TAKE A WHILE to move things over. Again, be patient. If you have a lot "of stuff", it will take a lot of time!
15. When done, you should see the login screen. Go ahead and login.
16. Once logged in, things should look pretty much as they looked on your old Mac.
17. You should check all your apps. Some may not run, and may require upgrading.
18. You can set aside the old backup, or ... "repurpose it" to become the backup for the new Mac. I'd keep the old one around for a week or so, at least.
 

Weaselboy

Moderator
Staff member
Jan 23, 2005
34,489
16,216
California
So if anyone can tell me more about Migration Assistant and the related questions please do.
Like @Dave Braine said, you will be fine. You can migrate from an older to newer macOS version, but not the reverse.

One thing to remember is make sure you do the migration during the initial system setup as opposed to making an account then afterwards doing the migration.

It will bring in your account and everything you listed.
 

R5152

macrumors newbie
Original poster
May 18, 2020
13
1
Take the drive OUT OF the broken MBP, and put it into an external USB3 enclosure.

They're dirt cheap, one like this will do the job:

You'll need a Phillips #00 driver to open the MBP.
You can use a TORX T-6 to "take the nubs off" the drive (or just CAREFULLY use a pair of needle-nose pliers to loosen them, then remove them with your fingers).

When you get the new MB, just follow the instructions from my "canned posting" which I reproduce below:
ONE EXCEPTION: you will not need to create a backup -- just use the ORIGINAL drive (in the external enclosure)
===================
Fishrrman's "you can do it!" routine for migrating to a new Mac:

If you follow my instructions below, I guarantee a success rate of 98%:
PRINT OUT these instructions and check them off as you go along.

1. BEFORE you do anything else, run a "final" backup on your old Mac. Use an external drive for this. It can be either TM or a cloned backup using CarbonCopyCloner or SuperDuper. I prefer CCC.
I STRONGLY RECOMMEND THAT YOU DO NOT USE TM AS YOUR "MIGRATION EXTERNAL DRIVE". INSTEAD, USE EITHER CCC OR SD. Things will go better this way!
2. Shut down the old Mac and disconnect the external drive
3. Take the new Mac out of the box and set it up on the table. DO NOT PRESS THE POWER ON BUTTON until step 8 (read on). You don't want to begin setup until "the right moment".
4. If you're using an external display, connect the display using the usb-c/VGA adapter/cable that you have
5. Connect the keyboard and mouse if you use them. I STRONGLY SUGGEST that you connect them DIRECTLY to the Mac.
6. If you use a hub, leave it DISCONNECTED for now
7. Connect your backup drive -- use a usb-c adapter if needed.

OK, we're ready-to-go, so let's get goin':
8. Press the power on button for the first time.
9. The new Mac may ask for help "finding" the keyboard, just follow instructions.
10. Begin setup. At the appropriate moment, setup assistant will ask if you wish to migrate from another Mac or drive. YES, you want to do this.
11. "Aim" setup assistant at the external backup. Setup assistant will need a little time to "digest it all". BE PATIENT and give setup assistant the time it needs.
12. You will now see a list of things that can be migrated, such as applications, accounts, settings and data.
13. I suggest that you select ALL of them.
14. Let setup assistant "do its thing". It's going to TAKE A WHILE to move things over. Again, be patient. If you have a lot "of stuff", it will take a lot of time!
15. When done, you should see the login screen. Go ahead and login.
16. Once logged in, things should look pretty much as they looked on your old Mac.
17. You should check all your apps. Some may not run, and may require upgrading.
18. You can set aside the old backup, or ... "repurpose it" to become the backup for the new Mac. I'd keep the old one around for a week or so, at least.

Already got the enclosure and have put the HDD in it. Now I just need a USB-C to USB-C cable or some nice USB-C hub.

Good instruction though, will definitely use it for the migration. Thanks!
[automerge]1589931087[/automerge]
Like @Dave Braine said, you will be fine. You can migrate from an older to newer macOS version, but not the reverse.

One thing to remember is make sure you do the migration during the initial system setup as opposed to making an account then afterwards doing the migration.

It will bring in your account and everything you listed.

What will happen to the applications that need to be updated? Maybe some of them are old enough or 32-bits, meaning they can't run in Catalina. Will it be possible to upgrade them after the migration or I need to upgrade them prior to the migration?

Does it make sense to use my HDD with someone else's Mac just to update the macOS and all the applications?
 
Last edited:
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