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Groups > comp.sys.mac.system > #145678
| From | "David B." <BoaterDave@hotmail.co.uk> |
|---|---|
| Newsgroups | alt.computer.workshop, comp.sys.mac.system |
| Subject | Re: What does "Reinstall macOS" do, exactly? |
| Date | 2025-07-12 08:07 +0100 |
| Message-ID | <mdefufFqn68U1@mid.individual.net> (permalink) |
| References | (1 earlier) <v9tks5$2gp7p$1@dont-email.me> <lif4h6F4qo2U1@mid.individual.net> <v9tnod$2h5vb$1@dont-email.me> <lif85hF5aobU2@mid.individual.net> <v9tro7$2hmhe$1@dont-email.me> |
Cross-posted to 2 groups.
On 18/08/2024 23:14, T i m wrote:
> On 18/08/2024 22:42, David Brooks wrote:
>
> <snip>
>
>> How many folk realise that
>> reinstalling the macOS will NOT eradicate any previously installed
>> malware?
>
> Anyone who has a clue re what they are doing around computers.
>
> See, if you understood what an OS was and what isn't part of the OS
> (like the personal info you state is still present), what part of it
> don't you understand?
>
> If you replace the water feature in your back garden, did you expect all
> the weeds to disappear as well?
>
> Cheers, T i m
I've just done this:-
davidbrooks@DavidBs-iMac ~ % diskutil resetFusion
Internally-located hardware disk devices known to the currently-running
macOS:
Rotational (disk1)
Solid State (disk0)
Volumes exported by partitions or storage systems hosted on the above
devices:
APPLE SSD SM0128L Media (disk0s2)
Storage (disk2s1)
disk0 will be used as the "main" ("faster") device
disk1 will be used as the "secondary" ("larger") device
WARNING: All of the above will be erased
Do you want to continue? (Enter "Yes" to proceed to erase) Yes
Force-unmounting all volumes on the chosen "main" ("faster") disk device
Started on disk0
Finished on disk0
Force-unmounting all volumes on the chosen "secondary" ("larger") disk
device
Started on disk1
Finished on disk1
Creating a new partition map on the "main" ("faster") disk device
Started on disk0
Unmounting disk
Creating the partition map
Waiting for partitions to activate
Finished on disk0
Partition disk0s2 will be the "main" ("faster") APFS Physical Store
Creating a new partition map on the "secondary" ("larger") disk device
Started on disk1
Unmounting disk
Creating the partition map
Waiting for partitions to activate
Finished on disk1
Partition disk1s2 will be the "secondary" ("larger") APFS Physical Store
Creating an APFS Fusion Container importing two partitions
Started on disk0s2
Creating a new empty APFS Container
Unmounting Volumes
Switching disk0s2 to APFS
Switching disk1s2 to APFS
Creating APFS Container
FusionLC autodetect: regular Fusion
Created new APFS Container disk2
Finished on disk0s2
The new APFS Container is disk2
Adding a logical APFS Volume to the APFS Container
Started on disk2
Preparing to add APFS Volume to APFS Container disk2
Creating APFS Volume
Created new APFS Volume disk2s1
Mounting APFS Volume
Setting volume permissions
Finished on disk2
The new APFS Volume exported by the APFS Container is disk2s1
Confirmed that your new volume "Macintosh HD" (disk2s1) is a Fusion Drive
Operation successful; you should now install macOS
=
*Complicated, isn't it*? 🙂
I'll list this other information here in case I need it later:-
Last login: Sat Jul 12 07:52:32 on ttys001
davidbrooks@DavidBs-iMac ~ % diskutil list
/dev/disk0 (internal, physical):
#: TYPE NAME SIZE
IDENTIFIER
0: GUID_partition_scheme *121.3 GB disk0
1: EFI EFI 314.6 MB disk0s1
2: Apple_APFS Container disk2 121.0 GB disk0s2
/dev/disk1 (internal, physical):
#: TYPE NAME SIZE
IDENTIFIER
0: GUID_partition_scheme *2.0 TB disk1
1: EFI EFI 209.7 MB disk1s1
2: Apple_APFS Container disk2 2.0 TB disk1s2
/dev/disk2 (synthesized):
#: TYPE NAME SIZE
IDENTIFIER
0: APFS Container Scheme - +2.1 TB disk2
Physical Stores disk0s2, disk1s2
1: APFS Volume Macintosh HD 819.2 KB disk2s1
/dev/disk3 (external, physical):
#: TYPE NAME SIZE
IDENTIFIER
0: GUID_partition_scheme *1.0 TB disk3
1: EFI EFI 209.7 MB disk3s1
2: Apple_APFS Container disk4 1000.0 GB disk3s2
/dev/disk4 (synthesized):
#: TYPE NAME SIZE
IDENTIFIER
0: APFS Container Scheme - +1000.0 GB disk4
Physical Store disk3s2
1: APFS Volume External HD - Data 461.8 GB disk4s1
2: APFS Volume Preboot 2.2 GB disk4s2
3: APFS Volume Recovery 1.2 GB disk4s3
4: APFS Volume Macintosh HD (Ext) 9.3 GB disk4s4
5: APFS Snapshot com.apple.os.update-... 9.3 GB
disk4s4s1
6: APFS Volume VM 1.1 GB disk4s6
/dev/disk5 (external, physical):
#: TYPE NAME SIZE
IDENTIFIER
0: GUID_partition_scheme *2.0 TB disk5
1: EFI EFI 209.7 MB disk5s1
2: Apple_APFS Container disk6 2.0 TB disk5s2
/dev/disk6 (synthesized):
#: TYPE NAME SIZE
IDENTIFIER
0: APFS Container Scheme - +2.0 TB disk6
Physical Store disk5s2
1: APFS Volume My Book 1.9 TB disk6s2
/dev/disk7 (external, physical):
#: TYPE NAME SIZE
IDENTIFIER
0: CD_partition_scheme *804.4 MB disk7
1: Apple_partition_scheme 700.4 MB disk7s0
2: Apple_partition_map 32.3 KB
disk7s0s1
(free space) 377.3 MB -
3: Apple_HFS WD SmartWare 320.7 MB
disk7s0s2
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Re: What does "Reinstall macOS" do, exactly? "David B." <BoaterDave@hotmail.co.uk> - 2025-07-12 08:07 +0100 Re: What does "Reinstall macOS" do, exactly? "David B." <BoaterDave@hotmail.co.uk> - 2025-07-12 12:36 +0100
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