Urgent! How to reinstall OS Sierra on Macbook Pro 15" Retina with an erased harddrive ?


Joined
Dec 9, 2014
Messages
17
Reaction score
0
I had to backup the entire HD on my Macbook Pro 15 " ultimo 2012 because the screen kept shutting down. After the backup to an external drive, I used Disk Utility to erase the SSD disk of the mac. Now I urgently need to install a new OS, and reload my files from the backup. How can I do this? I'd appreciate help urgently.
 
Ad

Advertisements

Joined
Sep 17, 2014
Messages
4,855
Reaction score
237
What software did you use for the backup? If it was Time Machine, you should be able to boot your machine to the hidden Recovery HD partition. However, and I suspect you do not have the file "Install macOS Sierra", this method will involve downloading and installing the "appropriate" Mac OS onto your machine. Here are the "choices" of what you will get:

https://support.apple.com/en-us/HT204904

It looks like if you want Sierra (but not High Sierra, and I'd recommend not installing High Sierra yet), you would press the Command and R keys, and that "should" get you Sierra. Be aware, though, that this process is slow. Once the installation completes, you'll be offered the opportunity to "migrate"/copy all your need "stuff" from your backup.

You could try another approach, though. Are you using another Mac to post here? If so, what exact model is it?
 
Last edited:

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.

Ask a Question

Top