“Apple users are being warned that security measures introduced in OS X Yosemite can adversely affect performance if they are have a third-party solid state drive (SSD) fitted in their Mac,” Daniel Robinson reports for V3.
“The issue, which has come to light since Yosemite was released, concerns the Kernel Extension (Kext) signing capability that Apple has introduced in OS X Yosemite,” Robinson reports. “This is intended to ensure that low level system drivers are approved and unaltered by malware, by blocking drivers without a valid signature.”
Robinson reports, “However, a knock-on effect of this feature is that it can stop the Trim driver for third-party SSDs from running.”
Read more in the full article here.