No recovery for the wicked ?

[nuno1959]

Hi guys

I have a 2015 iMac 27", lent it to a friend and... he partitioned my HD, it became full slowing down the computer no end ( that plus an array of folders scattered all over, etc, etc... ) so i tried to re-install High Sierra which i think is the OS it came with.

I shut down the computer and re started it in recovery mode - shift-alt - cmd & r keys pressed... - selected disk utility, erased the disks Macintosh HD ( 125Gb..) and the partition Disk 2 ( 1Tb point something..) assuming this would erase the partitions and present the drive as a single unit for lack of a better word..

4 attempts later i'm not any closer to managing to re-install anything.
After searching online for an answer, i tried on a friend's 2017 iMac 27" running Ventura 13.6.1 to make a bootable usb drive but it wouldn't allow me to download the OS from the appstore.

I've spent already a cvouple of days gathering info on this and trying but, to no avail.
Is my only solution to take it to an Apple tech centre to have them re-install the original OS & updates ?
Or does anyone here know how i can get out of this conundrum ?
I would REALLY appreciate it if you did

Many thanks in advance

Nuno

 

[Bigwaff]

You had a Fusion Drive which has been split into two drives. If you want to make it a Fusion Drive again, follow these instructions -

How to fix a split Fusion Drive - Apple Support

If your Fusion Drive appears as two drives instead of one in the Finder, it's no longer working as a Fusion Drive. Here's how to fix it.

support.apple.com

 

[nuno1959]

You had a Fusion Drive which has been split into two drives. If you want to make it a Fusion Drive again, follow these instructions -

How to fix a split Fusion Drive - Apple Support

If your Fusion Drive appears as two drives instead of one in the Finder, it's no longer working as a Fusion Drive. Here's how to fix it.

support.apple.com

Thank you so much, i'll look into it asap ! It's been driving me nuts...