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January 14, 2020 at 7:52 AM #88620IreneGuest
i have mac air book 2017. the 128 GB SSD went bad. of course out of warranty. Apple verified SSD bad getting folder with question icon on screen. not wanting to pay $400 to replace. i bought a internal 512GB SSD to replace bad 128GB. i installed new ssd but not recognizing new ssd. supposedly the new ssd is a plug n play. comes with Mojave pre-installed. since original ssd card bad no way for me to verify OS firmware is MacOS 10.13.6 (high sierra) or MacOS 10.14 (Mojave). i thought i had Catalina on old ssd.
1) how do i update firmware of system when i have a bad SSD?
2) the new ssd supposedly is APFS firmware only and can not run on MacOS versions lower than 10.13.6 or 10.14
since installed new ssd card under disk utilities not recognizing. i’m assuming my firmware is older and/or not APFS.
not sure what to do next to get computer running.
February 12, 2020 at 7:44 AM #90724ashishGuest
I have same issue .
I have macbook air 13 inch with 256gb running catilina
and also i have only ssd 512gb installed maveric of my old macbook air 11 inch which one i was sold without ssd
so i am also finding what happen if i insert 512 ssd in my macbook and boot .
i am not doing so yet because i dont want my macbook got sot issue ….
February 12, 2020 at 7:48 AM #90738AmandaGuest
I had this same issue with my MacBook. I went to my local Apple repair shop (not Apple Store–just a local place that works on Apple computers), gave them my new drive and my MacBook and the next day it was working again–but with an awesome 512 GB drive instead of my earlier 128GB.
And best of all, the total cost was $99.
My suggestion is to do the same–they know how to take care of issues like this. Just open Yelp and look for the top recommended Apple repair shops in your area.