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I have purchased a MacBook Air early 2014. the previous owner kept their hard drive for data safety so I bought a OWC 240gb SSD. the MacBook Air doesn’t recognise the SSD. The box of the SSD and some searching on the net told me I need to update the firmware on the MacBook Air. I have a 500gb 2.5” SSD from my old broken laptop and so I connected this with an external USB adaptor to the MacBook Air and it booted and worked fine when I booted up and pressed the option key. I could use the computer perfectly. I then went to the App Store and downloaded OS X Big Sur which states it is compatible for my MacBook Air. It took a few hours to download and install but on the final reboot it stopped working. ive tried to set up the new SSD but have the same problem as originally. Now the external SSD will not boot up and I can’t get it to show when I press the options button. my data is not important. I want to set this up as a new MacBook Air. I have a separate time machine back up of my data. I am happy to start this procedure again and give up the OS and data on my external SSD. I can run disc utility etc by pressing COMMAND R thank you in advance
The solution i found was to purchase an apple original SSD (samsung) and that allowed me to get the product working. I am returning the Aura SSD thank you for all your help.
try the command r key when powering on.
Let start things off with an older version of macOS as one of the problems I find is people jump to far up at once. Doing it in stages while a bit longer is more likely to get you going sooner! So lets get to what the system had. Do you know (ask the seller) what it was running? I would then install that download the installer from here How to get old versions of macOS As to getting it you really need to use a Mac system to setup the bootable OS installer USB thumb drive. If you are able to get to the internet recovery (getting to disk utility) you should be able to first format your thumb drive with GUID and a journaled file system. Then you should be able to copy over the installer file to it following this guide to set it up How to create a bootable macOS Sierra installer drive you’ll find other guides listed if you are using something else.
