PROBLEM making CLEAN install of MAC OS - disk cannot be erased

[Marko Zorec]

I have a PROBLEM - i want to make CLEAN install of MAC OS - so I want to erase disk first - but disk cannot be erased, there are multiple "partitions" on disk.

I want to have only one disk, like MACINTOSH HD and that would be it...

How can I delete all that partitions?

Thanx!!!

 

[Mike Boreham]

I have a PROBLEM - i want to make CLEAN install of MAC OS - so I want to erase disk first - but disk cannot be erased, there are multiple "partitions" on disk.

I want to have only one disk, like MACINTOSH HD and that would be it...

How can I delete all that partitions?

Thanx!!!

Use Erase all Content and settings. Returns Mac to factory state. No need to use Disk Utility.

 

[Marko Zorec]

That option is not available for me, I have 2015 macbook model..

Any other idea?

 

[chrfr]

That option is not available for me, I have 2015 macbook model..

Any other idea?

In the View menu of Disk Utility, select "Show all devices" and then click on the top item, which will likely be called "Apple SSD..." or similar, and then erase that. That'll get rid of all the partitions and volumes and you can then install macOS after that on the now empty disk.

 

[Marko Zorec]

Thanx Chrfr, that is exactly what I needed!

❤️