Hello to everyone!
I have an iMac 11,2 (mid 2010) 21.5" with an Apple (Hitachi) HDD 2TB. I wanted to upgrade it with an SSD Toshiba Q300 500GB. I did upgraded it but it's verry, verry, slow compared with the Apple (Hitachi) HDD, with Trim Support On and Off (tried both ways). Both tested on macOS Big Sur OCLP.
I also changed the SATA cable, but for the moment i did not have one with the guide pin in the same place on the 90 degree plug, so i connected the new SATA cable on ODD SATA port. Right now i have working only one SATA port which is ODD port with SSD pluged in.
I laso tried with the SSD connected thru USB adapter, and even though it's only USB 2.0 it seems faster than SATA connection.
I use Macs Fan Control for HDD temp and fan control.
Why? What is wrong. It's obvious it's something with the firmware/software... or maybe some quirks/patches in OC?
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