New mac time machine restore - multiple drives
New mac time machine restore - multiple drives
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Gad-Westy

Original Poster:

16,613 posts

243 months

Thursday 22nd April 2021
quotequote all
Hopefully not a difficult one.

New computer is Macbook Air M1 with 1tb internal SSD and 4tb external HDD

Old computer is 2012 imac with 1tb internal SSD and 3tb internal HDD - Time machine backs up both drives.

When I fire up the new mac and select restore from backup will I get the option to move everything that is on old SSD to new SSD and everything from HDD to new external HDD?

mmm-five

12,388 posts

314 months

Thursday 22nd April 2021
quotequote all
Where does TimeMachine back up to?

That's what the Setup Assistant/Migration Assistant will be looking for if you choose to restore from a Time Machine backup.

However, if you choose to migrate from the original internal SSD to the new internal SSD, then Assistant should offer you the option of migrating via wifi - assuming the old machine is capable of doing so and had an OS that supports it (10.13 or later).

However, most iMacs didn't have 2 separate drives in them - they tended to be a combined Fusion drive, so I'm not sure the Assistant is coded to recognise your config.

You might even be able to transfer everything using a TB2 to TB3 cable - and put the iMac into TDM (Target Disk Mode). That way it will appear as an external drive(s) and you can migrate the apps/docs over from the boot drive, and manually copy the HDD files over to the new external HDD.

Gad-Westy

Original Poster:

16,613 posts

243 months

Friday 23rd April 2021
quotequote all
mmm-five said:
Where does TimeMachine back up to?

That's what the Setup Assistant/Migration Assistant will be looking for if you choose to restore from a Time Machine backup.

However, if you choose to migrate from the original internal SSD to the new internal SSD, then Assistant should offer you the option of migrating via wifi - assuming the old machine is capable of doing so and had an OS that supports it (10.13 or later).

However, most iMacs didn't have 2 separate drives in them - they tended to be a combined Fusion drive, so I'm not sure the Assistant is coded to recognise your config.

You might even be able to transfer everything using a TB2 to TB3 cable - and put the iMac into TDM (Target Disk Mode). That way it will appear as an external drive(s) and you can migrate the apps/docs over from the boot drive, and manually copy the HDD files over to the new external HDD.
Cheers. It's backed up to a single external drive (USB).

What you have clarified seems to be how it's panning out. Looks like migration assistant is happy to do the transfer of everything from old computer's SSD to new computer's SSD but is ignoring everything that is on the internal second drive. I think that will be fine though. I'll copy the second drive manually, name the new one the same and then remake any links that break down. Just got 20 hours to wait while it transfer 3tb over USB2. smile

mmm-five

12,388 posts

314 months

Friday 23rd April 2021
quotequote all
Gad-Westy said:
Cheers. It's backed up to a single external drive (USB).

What you have clarified seems to be how it's panning out. Looks like migration assistant is happy to do the transfer of everything from old computer's SSD to new computer's SSD but is ignoring everything that is on the internal second drive. I think that will be fine though. I'll copy the second drive manually, name the new one the same and then remake any links that break down. Just got 20 hours to wait while it transfer 3tb over USB2. smile
...and don't worry if you see the transfer speed vary from 100mbps to 1mbps - it seems it slows down when it gets to lots of smaller files and can't calculate accurately.

My last one started at 13 hours, but was done in 3.