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Slow 5400rpm hdd speed

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Hello guys, I have high sierra set up and ready, but I notice that it is very laggy, and apps and games takes significant time to load.

I did a black magic disk speed test and it gives me average read/write speed around 30mb

isn't that low ?

any help will be appreciated. my info in the signature.

  • 4 months later...

I encountered the same problem. I realized that the system didn't recognize SATA controller correctly. So I solved the problem by copying AHCIPortInjector.kext  into /EFI/CLOVEVER/kexts/Other. I also added AppleAHCIPort.kext. After restarting the system you can see something like below in the Hardware section SATA/SATA Express


Intel 9 Series Chipset:

  Vendor: Intel

  Product: 9 Series Chipset

  Link Speed: 6 Gigabit

  Negotiated Link Speed: 6 Gigabit

  Physical Interconnect: SATA

  Description: AHCI Version 1.30 Supported


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