![]() 10.10.x adds another layer of security, which validates these KEXTs and causes a halt if one has been modified in an unauthorized way. Prior to 10.10, it was possible to edit KEXT files, effectively driver parameters, without raising any flags in the OS. Q: What has Apple changed exactly in Yosemite? TRIM is often referred to as garbage collection, which is somewhat true. For drives designed with a dependence on TRIM, this can be important for both performance and NAND wear management. ![]() Rewriting NAND that had prior been used to store data that has since been deleted is different that it is on a hard drive. TRIM is effectively an interface for the OS to help manage available space on an SSD. OWC specialize in upgrade components and accessories for Macs, and the company has its own line of flash and SSD drives specifically for the MacBook, the MacBook Pro, Mac mini, iMac, and Mac Pro. In order to get a better understanding of the problem, along with some solutions, I turned to OWC and its founder and CEO Larry O'Connor.
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