Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.

kaitlin4599

macrumors member
Original poster
Nov 27, 2013
56
7
United States
so i have a macbook air early 2014 with big sur and 4gigs of ram its a bit sluggish and i wanna downgrade to the stock os that would ha v e shipped with the macbook but idk how to do it im new to macs anyone got a step by step guide for this
 

Grumpus

macrumors 6502
Jan 17, 2021
269
166
If this is your laptop, it shipped with Mavericks and, for mysterious reasons, Apple makes that difficult to obtain. You could try booting into internet recovery using Option-Shift-Command-R. If this fails, you can download an older OS version and create an installation USB. If you really want Mavericks, @MrMacintoshBlog has uploaded a Mavericks ISO to archive.org, which you can copy to a USB using balenaEtcher. Note: downloads from archive.org can be very slow.

Be sure to back up any important files first - to downgrade you should do a 'clean' install by erasing the disk.

None of these older versions receive security updates any more, including Big Sur, and you'll probably run into problems related to expired certificates if you go very far back. I personally would try Mojave and use an ESR version of Firefox for web browsing. The Early Intel Macs forum may offer more advice.
 

Grumpus

macrumors 6502
Jan 17, 2021
269
166
The very first thing you should do is back up your data. If you don't want to read and follow the information in the links I provided above, you could download and use the Mist app from github and use it to create a Mojave installation USB. You'll find the download link on the right, under Releases. You'll need a USB stick or disk at least 16 GB big.

Doing a clean install involves completely erasing the disk, hence my repeated advice to back your data up. That's also why I suggest using an installer USB rather than running the installation app directly from Big Sur - if things go wrong, you can try again.

There are many articles on the web, like this one, which explain the process better than I can. If this is your only computer and you can't afford to be without it, then maybe you can find someone with experience locally to help.
 
  • Like
Reactions: kaitlin4599
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.