On Nov 22, 2014, at 8:14 AM, Matt Simmons <[email protected]> wrote:
> 
> And in case you missed it, Apple just made it MUCH more of a PITA to install 
> after-market SSDs in Macs: 
> http://hothardware.com/News/AntiCompetitive-Apple-Disables-Trim-Support-On-3rd-Party-SSDs-In-OS-X/

That article appears to push the view that all drives blessed with the magical 
TRIM wand are bug-free and well tested on all OS's, everywhere, and get free 
performance as a result, and bad ol' Apple is doing it disabling it as a 
punishment to people doing upgrades. 

They're missing the elephant in the room - on many drives, TRIM support is 
broken in ways that cause data loss.  This is mainly with older drives (which 
are likely still in use), but does happen with more recent drives - see 
http://www.pcengines.ch/msata16a.htm as an example from the last year. 

Apple isn't being anticompetitive - they're being hyperconservative in terms of 
preventing data loss by not auto-enabling a feature that is known to cause data 
loss on poorly engineered hardware, and whitelisting the hardware they've 
tested and know works. The other security bits (kernel driver signing) are just 
welcome modern features that finally are coming to OS X, that have the side 
effect of disabling a dirty hack of doing binary patches to a disk driver. 

That all said, it would be nice if there was some way to flip on the TRIM 
switch without turning off driver signing, and allow knowledgeable users to 
live dangerously. 

- Zack 

--
Zack Williams - Artisan Computer Services - 520.867.8701
[email protected]   http://www.artisancomputer.com
ACSA, MCP SBS, SCSA, LPIC-1


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