“Apple has, without warning, removed support for third-party SSDs in OS X 10.10 Yosemite, leaving anyone who uses one as a boot drive and has TRIM enabled with a Mac that won’t boot,” Adrian Kingsley-Hughes reports for ZDNet.
“While this is unlikely to be a problem for the average Mac user, for high-end Mac users such as filmmakers and videographers running customized systems it’s a serious problem,” Kingsley-Hughes reports. “Enabling TRIM is one of the best ways to maximize the life of a solid-state drive, but OS X doesn’t support it out-of-the-box except for Apple’s own drives, but until now it has been possible to enable it by altering drivers. ”
“The Trim Enabler software has been updated so that it can disable kext signing, but this is a global setting, and disables an otherwise useful security feature. However, if you rely on third-party SSDs, it’s your only hope,” Kingsley-Hughes reports. “Some SSD drives, such as those supplied by OWC, do not require TRIM to be enabled because they have the feature built into the drive, and are as such unaffected.”
Read more in the full article here.