Problem with starting up slowly on an Apple SSD.
Problem with starting up slowly on an Apple SSD.
You're dealing with a potential compatibility issue. The SSD might not be properly seated or recognized by the system. Check if the drive is correctly installed in the PCIe X1 slot and ensure the BIOS settings are set to support the new drive. Also, verify that the motherboard supports the specific model you're using. If the problem persists, consider testing with a different SSD or consulting the manufacturer's support for further guidance.
The adapter: https://amzn.eu/d/eWjbk13 Don't really know if there's a model number that makes any sense to share because it is a apple original part but shows as "Apple SSD SM1024F" in the bios. My system has a SanDisk 500gb SSD where windows is and a 2tb Samsung Evo 980 with Linux. There are some hard drives but this shouldn't affect any of this. I did a clean format of the drive with diskpart. Weird part is that is does show up in the boot sequence (from which I removed it) but not in the info what is plugged in (in picture)
Have you checked connecting the adapter to your second or third x16 ports? They use PCIe 3.0 whereas the x1 connectors are PCIe 2.0. This difference might help if PCIE compatibility matters.
It appears the SATA interface is actually SATA, not PCIe, based on the model details. The adapter needs to support a SATA-to-PCIe conversion, but the board seems to lack any logic circuits. The SSD supports up to 600 MB/s, which comfortably exceeds the PCIe 2.0 x1 limit of 500 MB/s. However, the odd boot time suggests a potentially poor-quality adapter, possibly affecting performance.
I've tested it in the third X16 slot, which didn't fix the issue but cut the startup time significantly. I recorded around 3 minutes before and now it's just 2. To confirm it wasn't another problem, I removed it and the startup time returned to 5 seconds. It's odd since the adapter has no bad reviews and the drive performed perfectly on the Mac.