While Apple states it supports 2012 MacBook Pro’s, I’m not sure if the Unibody was what they meant as there is the 2012 retina model as well. But, if you put aside that I don’t recommend using High Sierra on SATA based system with APFS as the queue depth is not very deep unlike PCIe/AHCI or PCIe/NVMe blade SSD’s used in the retina models.
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While Apple states it supports 2012 MacBook Pro’s, I’m not sure if the Unibody was what they meant as there is the 2012 retina model as well. But, if you put that aside, I don’t recommend using High Sierra or Mojave on SATA based system with APFS as the queue depth is not very deep unlike PCIe/AHCI or PCIe/NVMe blade SSD’s used in the retina models.
So what to do here??
There are a few different versions of the HD SATA cable and you really need to newer one with a SSD drive. This has to do with the ability of the cable to handle the higher flow rates the SSD pushes and pull’s, unlike an HDD. The other factor is many people damage the cable just putting it in! Many people stress the cable when they fold it around the corners. In truth you want a even arch not a sharp fold as you damage the thin foil wires and the shield.
Here is the correct cable: [product|IF161-100-4] Apple P/N 923-0084. I also place a strip of electricians tape on the uppercase where the cable crosses over as the rough surface tends to wear the cable as well.
I would reformat the SSD and stick with Sierra. Once you get it working with it make a good backup (TimeMachine) just in case. Then give Mojave a try again. It you want to you can alter the installer not to upgrade the SSD to APFS file system.
While Apple states it supports 2012 MacBook Pro’s, I’m not sure if the Unibody was what they meant as there is the 2012 retina model as well. But, if you put aside that I don’t recommend using High Sierra on SATA based system with APFS as the queue depth is not very deep unlike PCIe/AHCI or PCIe/NVMe blade SSD’s used in the retina models.
So what to do here??
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There are a few different versions of the HD SATA cable and you really need to newer one with a SSD drive. This has to do with the ability of the cable to handle the hight flow rates the SSD pushes and pull’s unlike a HDD. The other factor is many people damage the cable just putting it in! Many people stress the cable when they fold it around the corners. In truth you want a even arch not a sharp fold as you damage the thin foil wires and the shield.
+
There are a few different versions of the HD SATA cable and you really need to newer one with a SSD drive. This has to do with the ability of the cable to handle the higher flow rates the SSD pushes and pull’s, unlike an HDD. The other factor is many people damage the cable just putting it in! Many people stress the cable when they fold it around the corners. In truth you want a even arch not a sharp fold as you damage the thin foil wires and the shield.
Here is the correct cable: [product|IF161-100-4] Apple P/N 923-0084. I also place a strip of electricians tape on the uppercase where the cable crosses over as the rough surface tends to wear the cable as well.
I would reformat the SSD and stick with Sierra. Once you get it working with it make a good backup (TimeMachine) just in case. Then give Mojave a try again. It you want to you can alter the installer not to upgrade the SSD to APFS file system.
While Apple states it supports 2012 MacBook Pro’s I’m not sure if the Unibody was what they meant as there is the 2012 retina model as well. But, if you put aside that I don’t recommend using High Sierra on SATA based system with APFS as the queue depth is not very deep unlike PCIe/AHCI or PCIe/NVMe blade SSD’s used in the retina models.
+
While Apple states it supports 2012 MacBook Pro’s, I’m not sure if the Unibody was what they meant as there is the 2012 retina model as well. But, if you put aside that I don’t recommend using High Sierra on SATA based system with APFS as the queue depth is not very deep unlike PCIe/AHCI or PCIe/NVMe blade SSD’s used in the retina models.
So what to do here??
There are a few different versions of the HD SATA cable and you really need to newer one with a SSD drive. This has to do with the ability of the cable to handle the hight flow rates the SSD pushes and pull’s unlike a HDD. The other factor is many people damage the cable just putting it in! Many people stress the cable when they fold it around the corners. In truth you want a even arch not a sharp fold as you damage the thin foil wires and the shield.
Here is the correct cable: [product|IF161-100-4] Apple P/N 923-0084. I also place a strip of electricians tape on the uppercase where the cable crosses over as the rough surface tends to wear the cable as well.
I would reformat the SSD and stick with Sierra. Once you get it working with it make a good backup (TimeMachine) just in case. Then give Mojave a try again. It you want to you can alter the installer not to upgrade the SSD to APFS file system.
While Apple states it supports 2012 MacBook Pro’s I’m not sure if the Unibody was what they meant as there is the 2012 retina model as well. But, if you put aside that I don’t recommend using High Sierra on SATA based system with APFS as the queue depth is not very deep unlike PCIe/AHCI or PCIe/NVMe blade SSD’s used in the retina models.
So what to do here??
There are a few different versions of the HD SATA cable and you really need to newer one with a SSD drive. This has to do with the ability of the cable to handle the hight flow rates the SSD pushes and pull’s unlike a HDD. The other factor is many people damage the cable just putting it in! Many people stress the cable when they fold it around the corners. In truth you want a even arch not a sharp fold as you damage the thin foil wires and the shield.
Here is the correct cable: [product|IF161-100-4] Apple P/N 923-0084. I also place a strip of electricians tape on the uppercase where the cable crosses over as the rough surface tends to wear the cable as well.
I would reformat the SSD and stick with Sierra. Once you get it working with it make a good backup (TimeMachine) just in case. Then give Mojave a try again. It you want to you can alter the installer not to upgrade the SSD to APFS file system.