Not detecting PCIe SSD

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MacBook Pro（13 英寸，配备 Retina 显示屏2015 年初期）

2015年3月更新的 13 英寸 MacBook Pro 配备 Retina 显示屏，型号为A1502，采用第五代英特尔酷睿 i5 和 i7 处理器，并配备 Force Touch触控板。

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Birger Jensen @birgerjens12203

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发帖于: 2021年5月21日

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Not detecting PCIe SSD

Hi

My MacBook Pro stopped working awhile ago with the question mark at boot.

I tried doing a Internet recovery but couldn’t see the PCIe SSD, so I thought the disk was dead, I have bought a new “Aura Pro X” and booted up internet recovery again, but it is still not seeing the disk :-(

I then tried attaching a external disk and installed Big Sur on that and it is working without any problem, suddenly I could see my new PCIe SSD in Disk Utilities, so I installed Big Sur on that and finally it was working.

I used it all day, but the next day it wouldn’t start again and couldn’t see the PCIe SSD, did the same thing again with the USB disk and again after sometime and several reboots the disk showed up, and worked for about a day before it did it again,

Could this be my logic board that has failed??

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DanJ @danj 声誉积分: 496.1千 Self employed contract worker 35 338 974 · Answer 1 · 2021-05-21T13:57:54-07:00

DanJ @danj

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I think you have two issues which makes this a bit more confusing!

First the OWC Aura SSD requires your system is running High Sierra or newer as the system’s firmware needs to be updated so the newer macOS file system is recognized (APFS vs HFS+). To add to it the OS also offers a newer PCIe driver which the OWC SSD needs. Thats why you had issues seeing it as you where likely using Sierra or older macOS which doesn’t have the needed driver and if you had set it up using the external drive then you have a issue of which macOS is running your original or the newer!

So lets open up System Preferences > Startup Disks I think you’ll find your external drive which is running Big Sur is the startup disk and while you had intended to install Big Sur on the internet drive for some reason it’s running Sierra or older!

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I have also tried another PCIE disk from another Macbook pro, and it can't see that either

由 Birger Jensen 完成的 2021年5月21日

@Birger Jensen - But what was the macOS it was running? Thats important here!

由 DanJ 完成的 2021年5月21日

@danj to be honest I don't know, it's my wife that has been using it, and she don't know anything :-( If I remove any USB drives and keep turning it on and off, then suddenly it starts, but hangs after 10min. should I try install High Sierra instead of Big Sur??

由 Birger Jensen 完成的 2021年5月21日

@Birger Jensen - The drive you are using for booting up needs to be High Sierra or newer and the system its self needs to have been upgraded with High Sierra as well! Most people are not swapping drives about so they don't get into this type of mess.

Let's get back to the original internal SSD install it and then run the Internet recovery with Option-Command-R keys. Let's get it running first!

Reference: How to reinstall macOS

由 DanJ 完成的 2021年5月21日

@danj but if I put in the old drive and start a internet recovery using Option-Command-R it will suggest El Captain and if go to disk tool the drive is not listed there

由 Birger Jensen 完成的 2021年5月22日

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MacBook Pro（13 英寸，配备 Retina 显示屏2015 年初期）

Not detecting PCIe SSD

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