clean install using Option-Cmd-R

mattburley7

macrumors 68040
Original poster
Oct 13, 2011
3,235
618
can anyone confirm that this option now gives a clean install copy of macos mojave?
 

Porkchop Sandwich

macrumors regular
Feb 3, 2017
243
141
I un-enrolled my 2017 mbp from the beta program, restarted holding comm & r (no '-'), wiped my drive, and installed the final release. Took about 15/20min. I'm now presented with a fresh copy of Mojave. ..just fyi
 

mattburley7

macrumors 68040
Original poster
Oct 13, 2011
3,235
618
i am on high sierra. if i do option-cmd-r will it give me mojave and option to do a clean install?
 

Birkan

macrumors member
Sep 11, 2011
87
57
Germany
Option-CMD-R should install the latest available OS according to Apple documents. You can try it without messing up your original partition. Just press the Option-CMD-R buttons and let it load the latest OS. If you see Mojave installer it is good and you can wipe and install from there, otherwise, you might need to wait a few days. https://support.apple.com/en-us/HT204904
 

richard69

macrumors newbie
Oct 16, 2014
29
4
I did a clean install on my mBP TB. Just created a usb install media restart, hold option key, and choose the install media. Format the SSD, done. Worked like a charm .
 

dan9700

Suspended
May 28, 2015
3,347
4,819
Mine wont let me
[doublepost=1537817931][/doublepost]It wont let me install from usb, keeps skiping it and going to globe and installing from server back to high sierra
 

richard69

macrumors newbie
Oct 16, 2014
29
4
Mine wont let me
[doublepost=1537817931][/doublepost]It wont let me install from usb, keeps skiping it and going to globe and installing from server back to high sierra
Follow the steps in this video

https://9to5mac.com/2018/06/18/how-to-create-a-bootable-macos-mojave-10-14-usb-install-drive-video/
[doublepost=1537819118][/doublepost]
Why on 2018 it says security cant install from usb drive
You need to hold CMD + R and change the settings just to install, after you can turn it on again.
 

dan9700

Suspended
May 28, 2015
3,347
4,819
Follow the steps in this video

https://9to5mac.com/2018/06/18/how-to-create-a-bootable-macos-mojave-10-14-usb-install-drive-video/
[doublepost=1537819118][/doublepost]
You need to hold CMD + R and change the settings just to install, after you can turn it on again.
Thank you what setting do you change arghhh this is a nightmare im now installing high sierra again and just upgrade i just got new mac so wanted it to start with 10.14 from scratch but the t2 quick wont do it like the old days
 

TokMok3

macrumors 6502a
Aug 22, 2015
623
399
Thank you what setting do you change arghhh this is a nightmare im now installing high sierra again and just upgrade i just got new mac so wanted it to start with 10.14 from scratch but the t2 quick wont do it like the old days
Sooner or later you will have to install Mojave, why not to start now.
 
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raab

macrumors regular
Jul 23, 2010
145
60
Sooner or later you will have to install Mojave, why not to start now.
He wants to fresh install Mojave instead of upgrading from High Sierra, but the T2 chip is preventing him from doing so
 
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