Administrators Andrew Reid Posted November 12, 2014 Administrators Share Posted November 12, 2014 DO NOT upgrade to Yosemite if you are booting from a third party SSD drive. Here's what Apple is up to and what to do about it...Read the full article here Quote Link to comment Share on other sites More sharing options...
Alex Mitchell Posted November 12, 2014 Share Posted November 12, 2014 Running off of an internal OWC SSD on one of my machines, which works fine. Installed and running off another external drive on another machine also worked. I have yet to hear anyone else have this issue. Besides, what makes you think this is a security issue if it still worked over USB 3? Quote Link to comment Share on other sites More sharing options...
Dennis L Sorensen Posted November 12, 2014 Share Posted November 12, 2014 Well. I agree with you Andrew. But this is nothing new. Apple has done this for many years with all the other hardware you find in your computer/PC. And for that reason exactly, I am a Windows user. :) You can pretty much use any hardware you want - including SSDs :P And you can't do that with OS X because they have very limited hardware support. Quote Link to comment Share on other sites More sharing options...
pietz Posted November 12, 2014 Share Posted November 12, 2014 i have a Hackintosh running Yosemite from a Samsung 830 SSD without any issues. As a matter of fact I know 4 other people also running a Hackintosh with SSD drives on Yosemite. The chance that all 5 of us run a Apple-used-SSD is pretty low. I suspect that this is purely a problem for people running original Apple hardware, but with a third party drive. Hackintosh users seem unaffected. Quote Link to comment Share on other sites More sharing options...
wjkotze Posted November 12, 2014 Share Posted November 12, 2014 My Lacie Thunderbolt ssd bootdrive runs without any issues on Yosemite. Use it permanently on mid 2012 27" imac. Quote Link to comment Share on other sites More sharing options...
Administrators Andrew Reid Posted November 12, 2014 Author Administrators Share Posted November 12, 2014 Running off of an internal OWC SSD on one of my machines, which works fine. Installed and running off another external drive on another machine also worked. I have yet to hear anyone else have this issue. Besides, what makes you think this is a security issue if it still worked over USB 3? It worked over USB 3 as Mavericks booted instead of the stillborn Yosemite installation. The problem comes when upgrading to Yosemite. Read the article. Quote Link to comment Share on other sites More sharing options...
Administrators Andrew Reid Posted November 12, 2014 Author Administrators Share Posted November 12, 2014 i have a Hackintosh running Yosemite from a Samsung 830 SSD without any issues. As a matter of fact I know 4 other people also running a Hackintosh with SSD drives on Yosemite. The chance that all 5 of us run a Apple-used-SSD is pretty low. I suspect that this is purely a problem for people running original Apple hardware, but with a third party drive. Hackintosh users seem unaffected. It doesn't affect a Hackintosh. I assume the driver signing is off anyway on those systems, since the very definition of a Hackintosh is that they are a hack. This problem comes when doing an official upgrade to Yosemite using the App Store on an official Mac system with third party SSD drive or external SSD caddy. Quote Link to comment Share on other sites More sharing options...
Amro Othman Posted November 12, 2014 Share Posted November 12, 2014 Hmmm, any other people can chime in? Maybe it's a problem on only certain drive controllers/ hardware combinations... Quote Link to comment Share on other sites More sharing options...
Administrators Andrew Reid Posted November 12, 2014 Author Administrators Share Posted November 12, 2014 My Lacie Thunderbolt ssd bootdrive runs without any issues on Yosemite. Use it permanently on mid 2012 27" imac. What brand of SSD are you using? Quote Link to comment Share on other sites More sharing options...
richnyc Posted November 12, 2014 Share Posted November 12, 2014 I'm on a MBP (mid-2012 model) where I replaced my HDD with a 256GB Samsung SSD, running and booting into OS X Yosemite without problems. I guess it is only affecting folks who are booting from an external SSD, if I'm reading this right. Quote Link to comment Share on other sites More sharing options...
vulgatron Posted November 12, 2014 Share Posted November 12, 2014 I've updated from Mavericks to Yosemite thru the App Store, and it's running with no problems on my Samsung EVO SSD. If it helps I have a Macbook Pro 15inch Mid 2012 PD: I got scared when I saw the title of the post!!! Luckily everything works fine and I haven't lost any data! Quote Link to comment Share on other sites More sharing options...
Administrators Andrew Reid Posted November 12, 2014 Author Administrators Share Posted November 12, 2014 Remember to read this too guys... http://www.larryjordan.biz/caution-ssd-drives-and-yosemite/ And this by OWC's CEO - http://blog.macsales.com/21641-with-an-owc-ssd-theres-no-need-for-Trim Not all SSDs use Trim which is where the unsigned driver problem occurs. It could also depend on the Thunderbolt controller / caddy chipset, etc. I am not sure. But I am sure it doesn't work on my system. iMac 27" late 2013. Samsung Evo 840 500GB SSD in Buffalo Thunderbolt caddy. Quote Link to comment Share on other sites More sharing options...
JohnVid Posted November 12, 2014 Share Posted November 12, 2014 Apple sure like to suck the cash straight out your wallet, how else could they afford such an ugly Yacht. Axel 1 Quote Link to comment Share on other sites More sharing options...
tyger11 Posted November 12, 2014 Share Posted November 12, 2014 That's not the only solution. Another solution is to not buy into the Apple ecosystem. Amro Othman 1 Quote Link to comment Share on other sites More sharing options...
shootsharp Posted November 12, 2014 Share Posted November 12, 2014 Andrew, do you mean any version of Yosemite? because i'm using Yosemite on a SSD right now to comment on this and i've heard nothing from any other sources having the same issue. I've used an external SSD over thunderbolt for the Yosemite Beta, and now for the full release which i only updated an hour ago. no issues yet. for the record i'm using a Lacie SSD with thunderbolt Quote Link to comment Share on other sites More sharing options...
Administrators Andrew Reid Posted November 12, 2014 Author Administrators Share Posted November 12, 2014 It's working for you because Trim is disabled, or your particular brand of SSD doesn't use trim and instead the firmware uses a different type of driver. If Trim is simply disabled it is likely your SSD performance will tail off over time, as Trim keeps things organised and tells the OS where the remaining free space is. There's a good explanation from huge Apple fans Samsung here: http://www.samsung.com/global/business/semiconductor/minisite/SSD/us/html/about/whitepaper04.html If the Trim kext is loaded, in my case it could be that booting my MacBook Retina 15" with my iMac drive played with some settings... But that doesn't explain why so many others are having the same problem and that Larry & OWC are sounding off about it. How do I disable Trim anyway, or check if the kext files are loaded / enabled? Quote Link to comment Share on other sites More sharing options...
vulgatron Posted November 12, 2014 Share Posted November 12, 2014 Just a heads up regarding TRIM, I'm using TRIM Enabler on my Samsung SSD and I'm typing from my MBP running Yosemite. Quote Link to comment Share on other sites More sharing options...
Administrators Andrew Reid Posted November 13, 2014 Author Administrators Share Posted November 13, 2014 Just a heads up regarding TRIM, I'm using TRIM Enabler on my Samsung SSD and I'm typing from my MBP running Yosemite. Either trim isn't really enabled despite what the software is saying, or you have the kext signing security feature turned off. Can you find out? Quote Link to comment Share on other sites More sharing options...
stratocaster0811 Posted November 13, 2014 Share Posted November 13, 2014 Angelbird has their "wrk" SSD drives that somehow support the OSX trim. See this article below for more. http://www.macrumors.com/2014/10/31/angelbird-ssd-trim/ Angelbird SSD drives are available here. http://bhpho.to/11jAtXU Quote Link to comment Share on other sites More sharing options...
Bill Streeter Posted November 13, 2014 Share Posted November 13, 2014 I call BS. I have a third party SSD in my 2011 MBP and have had no issues with Yosemite. Quote Link to comment Share on other sites More sharing options...
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