Yosemite and TRIM

[ecschwarz]

Wow, I just found this thread having just bought a Samsung EVO for a Yosemite'd Mac Mini. I'm used to Apple pulling some dickish moves but this is ridiculous....

I don't think Apple is necessarily pulling a dickish move...inconvenient, sure, but I doubt someone in Cupertino sat down and thought, "Let's mess things up for people who have upgraded old Macs with SSDs." I know they're constantly trying to increase security (and yes, this often has come by way of Macs being more iOS-like - Gatekeeper, locking out access to some folders, iOS-like tools like Launchpad, even removing the ability to customize some network settings in favor of "profiles" like iOS devices). It probably wouldn't be hard for them to add support for TRIM on third-party SSDs, which I can agree is the more frustrating move.

 

[occamsrazor]

It probably wouldn't be hard for them to add support for TRIM on third-party SSDs, which I can agree is the more frustrating move.

Given Trim Enabler has been doing it for years, I'd suppose it wouldn't hard at all for Apple enable 3rd Party support themselves. In fact the question is why did they ever disable it by default in the first place? The only reason I can think of is economic...

 

[Mercury77]

So lets say that apple doesn't open up trim to be enabled for 3'ed party SSD's
Is there any SSD that's good to upgrade a Macmini 2012?

Have been reading up on TRIM and Garbage Collector and I'm not 100% sure if one does the same as the other.

So, any good suggestions what SSD to purchase?

 

[Badagri]

Given Trim Enabler has been doing it for years, I'd suppose it wouldn't hard at all for Apple enable 3rd Party support themselves. In fact the question is why did they ever disable it by default in the first place? The only reason I can think of is economic...

 

[yijingman]

But, for me, I might end up buying the "Angelbird WRK" because according to their website, Apple recognizes it and Apple's Trim is enabled!

I think a good question to ask is Why Angelbird is natively Apple Trim enabled (Indeed, it is, just checked their site...) and others, like Samsung or Crucial, etc., are not?

Any clues? I'd like to buy the 1TB Samsung SSD but not with all these problems...

Tks

 

[Cindori]

I think a good question to ask is Why Angelbird is natively Apple Trim enabled (Indeed, it is, just checked their site...) and others, like Samsung or Crucial, etc., are not?

Any clues? I'd like to buy the 1TB Samsung SSD but not with all these problems...

Tks

Angelbird are faking their drives to show as "APPLE SSD" in OS X. A pretty bold move, since Apple could easily block this method, effectively leaving Angelbird customers with a product that does not work as advertised.

 

[yijingman]

Thank you for the reply!

Angelbird are faking their drives to show as "APPLE SSD" in OS X. A pretty bold move, since Apple could easily block this method, effectively leaving Angelbird customers with a product that does not work as advertised.

You mean all it takes for Angelbird to fly under the radar is a fake drive name? Crazy...

I've been reading your blog and site and I would happily pay the purchase price for Trim Enabler, times five, if I didn't have to jump through all these hoops to get it working correctly and/or risking bricking my MBP at any moment after such an upgrade of hardware and software.

 

[al404]

I have a mac mini and i run OS X 10.10 from SSD on USB 3
I still have a copy os my system on internal HHD i guess that if i brick for PRAM reset o similar issue i can still fix it booting from internal disk

if this is correct i guess anybody can create a USB os SD OS X version to boot from if main SSD bricks, is correct?

 

[Tinmania]

I have a mac mini and i run OS X 10.10 from SSD on USB 3
I still have a copy os my system on internal HHD i guess that if i brick for PRAM reset o similar issue i can still fix it booting from internal disk

if this is correct i guess anybody can create a USB os SD OS X version to boot from if main SSD bricks, is correct?

If your SSD is connected via USB 3 then trim is not supported anyway. Or did you mean that you boot off of USB 3 SSD but also have an internal HDD and an internal SSD on which you want to enable trim?

In any event, yes, you can create a USB boot disk.

You don't need to as you can fix the system via recovery, but it involves typing in a half dozen terminal commands.

It would be nice if we could add Trim Enabler app to the Recovery partition, or at least a script to enable the system to boot. It's a tricky process to add to recovery but I know it was possible at least on Mavericks.



Mike

 

[al404]

i hava a mac mini with his original internal HDD and a USB 3 case with an SSD
i boot and use OS X from usb 3 external SSD

trim enable now say that trim is enabled, do you mean that it only works on internal SSD and it doesn't if SSD is external disk?

 

[Tinmania]

i hava a mac mini with his original internal HDD and a USB 3 case with an SSD
i boot and use OS X from usb 3 external SSD

trim enable now say that trim is enabled, do you mean that it only works on internal SSD and it doesn't if SSD is external disk?

As far as I know trim works with internal SSD and external thunderbolt SSD--but not external USB 3.



Michael

 

[al404]

maybe in my case the best option could be to run an optimize disk from windows occasionally

installing windows on internal HDD or attach my external SSD to a windows PC

http://www.eightforums.com/tutorials/8615-optimize-drives-defrag-hdd-trim-ssd-windows-8-a.html

not sure if a linux live can do it

 

[BurgDog]

maybe in my case the best option could be to run an optimize disk from windows occasionally

installing windows on internal HDD or attach my external SSD to a windows PC

http://www.eightforums.com/tutorials/8615-optimize-drives-defrag-hdd-trim-ssd-windows-8-a.html

not sure if a linux live can do it

Windows would have to understand the Mac file system to be able to understand what blocks are not allocated to TRIM those out. The allocation tables are on the disk as part of the file system. I wouldn't trust Windows to do it correctly and if done wrong could really screw up the Mac partition.

 

[sharon22]

Angelbird are faking their drives to show as "APPLE SSD" in OS X. A pretty bold move, since Apple could easily block this method, effectively leaving Angelbird customers with a product that does not work as advertised.

Ewww. I never thought of that. So if I buy it, stick it in my computer, everything works fine and dandy, and then with the next Software Update, I might find that TRIM is no longer enabled?

Don't like that thought!

Maybe I'll contact Angelbird, see what they say. I'd, personally, rather have the blazing fast Samsung 850 pro, and just run whatever hack I have to run...

 

[Badagri]

Maybe I'll contact Angelbird, see what they say. I'd, personally, rather have the blazing fast Samsung 850 pro, and just run whatever hack I have to run...

Considering Apple uses Samsung.

 

[sharon22]

Considering Apple uses Samsung.

Oh really? You mean Samsung in general? Or the SSD's they put in when you order and iMac are Samsung? Ya, I think the Samsung 850 pro is the way to go, after looking at zillions of benchmarks.

I can just see installing the Angelbird, everything's fine, until the next software update. Then I'll really wish I had put in a Samsung.

 

[patearrings]

Hi guys,

I have followed this thread with interest. Just so I am clear. Am I safe running trim enabler as long as i do NOT reset my PRAM/NVRAM??

Do OSX update 10.0 to 10.1 etc normally reset this as part of the update process?

Many thanks

 

[DaKKs]

Works fine. Dunno about upgrading. But I suppose we'll see when 10.10.1 is released...

 

[ssls6]

Hi guys,

I have followed this thread with interest. Just so I am clear. Am I safe running trim enabler as long as i do NOT reset my PRAM/NVRAM??

Do OSX update 10.0 to 10.1 etc normally reset this as part of the update process?

Many thanks

You need a printed copy or a pdf on an iMac etc....of how to recover from a boot failure. Your SMC can get reset from a power failure, etc...As long as you know how to recover then you're pretty safe.

 

[m4v3r1ck]

Angelbird are faking their drives to show as "APPLE SSD" in OS X. A pretty bold move, since Apple could easily block this method, effectively leaving Angelbird customers with a product that does not work as advertised.

+1 Exactly!

 

[bikejack]

You need a printed copy or a pdf on an iMac etc....of how to recover from a boot failure. Your SMC can get reset from a power failure, etc...As long as you know how to recover then you're pretty safe.

Does the SMC get automatically reset after a power failure and does a SMC reset by itself lead to boot up issues with trim enabled in Yosemite? I thought it was a PRAM reset that was the issue?

What are the consequences of a power failure on trim being enabled in Yosemite with a non Apple SSD installed???

 

[ssls6]

Does the SMC get automatically reset after a power failure and does a SMC reset by itself lead to boot up issues with trim enabled in Yosemite? I thought it was a PRAM reset that was the issue?

What are the consequences of a power failure on trim being enabled in Yosemite with a non Apple SSD installed???

I've seen the grey screen of death after a safe boot, after a PRAM reset, and I think after a power outage...my advice is to know how to recover then it's not so scary.

 

[Cindori]

Does the SMC get automatically reset after a power failure and does a SMC reset by itself lead to boot up issues with trim enabled in Yosemite? I thought it was a PRAM reset that was the issue?

What are the consequences of a power failure on trim being enabled in Yosemite with a non Apple SSD installed???

I don't think that PRAM is guaranteed to reset on power failure. But it can happen.
The consequences will be that you have to follow the 5 steps in the FAQ page to get back into your system. If you are comfortable with those steps and using the Terminal, it should only take a few minutes, no big deal. But it can be quite a nuisance to be temporarily locked out from your computer if you got important work to do.

I am working on a new feature to perform a total manual Trim which can be run every week or so, to avoid the constant risk of getting the boot error. It will be a part of a major new disk software I am releasing at the end of this year.

 

[m4v3r1ck]

I am working on a new feature to perform a total manual Trim which can be run every week or so, to avoid the constant risk of getting the boot error. It will be a part of a major new disk software I am releasing at the end of this year.

Great news Cindori!

That's why I'm a great fan of your app Trim Enabler. I never had an issue installing and using TE in Yosemite 10.10! Still going strong!

Keep up the good works man!!!!

 

[timothevs]

Apologies if this has been answered before, but what about the series of commands that were posted here and elsewhere -

sudo cp /System/Library/Extensions/IOAHCIFamily.kext/Contents/PlugIns/IOAHCIBlockStorage.kext/Contents/MacOS/IOAHCIBlockStorage /System/Library/Extensions/IOAHCIFamily.kext/Contents/PlugIns/IOAHCIBlockStorage.kext/Contents/MacOS/IOAHCIBlockStorage.bak

sudo perl -pi -e 's|\x00\x41\x50\x50\x4c\x45\x20\x53\x53\x44\x00|\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00|' /System/Library/Extensions/IOAHCIFamily.kext/Contents/PlugIns/IOAHCIBlockStorage.kext/Contents/MacOS/IOAHCIBlockStorage

sudo touch /System/Library/Extensions

sudo kextcache -prelinked-kernel /System/Library/Caches/com.apple.kext.caches/Startup/kernelcache -K /System/Library/Kernels/kernel /System/Library/Extensions

I am sure that they do need to be repeated after an OS update, but do these commands need to be repeated after a PRAM reset as well?