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dcmaccam

macrumors 6502
Original poster
Sep 14, 2017
274
50
West Coast of Scotland
I have a 2019 iMac with a Fusion drive running Catalina I want set it up the way I had my 2011 iMac, that is booting from a SSD connected to the Thunderbolt port. Now I am waiting for my Thunderbolt 3 to Thunderbolt 2 adapter to arrive. So I did this for now using the USB 3 port on the external drive.

On my 2011 iMac I added the TB drive, did a restore from my backup on to this drive then went in to Disk Utility and unmounted the internal drive, all good. (The drives were not running APFS)

I completed a similar step on the new machine And this how it looks below:-

Screenshot 2020-10-11 at 14.26.59.png

Is this what it should look like (Don't know if this is an APF thing). My intention was to have two completely separate installations, one on the internal drive and one on the external and just set itup to boot from the external drive.

Also not sure what the 2.15GB under VM is.

If I click on the Container disk2 or Container disk5 it show under the box with the disk capacity on the top right (Shared by 5 volumes)

Any enlightenment on this would be gratefully appreciated, Thanks.
 

dcmaccam

macrumors 6502
Original poster
Sep 14, 2017
274
50
West Coast of Scotland
No T2 chip. I just set the boot drive in System Preferences to the SSD. When my Thunderbolt 3 to Thunderbolt 2 adapter arrive I will move the drive to the Thunderbolt connector and make sure Trim is enabled. Finally a couple of tie-wraps and attached the drive to the stand at the back of the machine.
 

Taz Mangus

macrumors 604
Mar 10, 2011
7,815
3,504
I completed a similar step on the new machine And this how it looks below:-

View attachment 965172

Is this what it should look like (Don't know if this is an APF thing). My intention was to have two completely separate installations, one on the internal drive and one on the external and just set itup to boot from the external drive.

Catalina uses the new Apple File System (APFS).

Also not sure what the 2.15GB under VM is.

If I click on the Container disk2 or Container disk5 it show under the box with the disk capacity on the top right (Shared by 5 volumes)

Any enlightenment on this would be gratefully appreciated, Thanks.

Take a look at the link below, as it will help.

 
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ssmed

macrumors 6502a
Sep 28, 2009
885
423
UK
I realised I did not complete my answer. The usual is:

Overall disk name (e.g. LaCie mobile SSD Media)
>Container diskX
>>MyCuteDisk
>>MyCuteDisk - Data

matching your Disk Utility view.
 
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dcmaccam

macrumors 6502
Original poster
Sep 14, 2017
274
50
West Coast of Scotland
Catalina uses the new Apple File System (APFS).



Take a look at the link below, as it will help.


Thanks very much for the info. It clears things up.
 
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