Resolved SSD Trim strangeness!

MarkC426

macrumors 6502a
Original poster
May 14, 2008
664
148
UK
I have a spare ssd with Mojave installed (but not my main system).
Booted into it to update to 10.14.6.
While there I noticed trim is disabled, does this have to be enabled for each OS version installed?
I always thought it was system wide.
My HS install, all drives say enabled.

OT....I also noticed HS has 24bit gpu support, but Moj has 30bit, this is probably very old news... 🤪
 

crjackson2134

macrumors 601
Mar 6, 2013
4,579
1,681
Charlotte, NC
I have a spare ssd with Mojave installed (but not my main system).
Booted into it to update to 10.14.6.
While there I noticed trim is disabled, does this have to be enabled for each OS version installed?
I always thought it was system wide.
My HS install, all drives say enabled.

OT....I also noticed HS has 24bit gpu support, but Moj has 30bit, this is probably very old news... 🤪
It is system wide (Operating System Wide).

When you booted into a different OS, you booted into a different system. Enable Trim on THAT drive.

EXCEPTION:
Trim should always automatically enable itself for Apple OEM SSD’s. In that case it’s not system wide until you manually enable it as above.
 
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MarkC426

macrumors 6502a
Original poster
May 14, 2008
664
148
UK
Thanks dude, don’t really use the mojave install, but good to know.

edit: don’t you normally just open terminal to enable it, rather than recovery?
 
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chrfr

macrumors G3
Jul 11, 2009
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Thanks dude, don’t really use the mojave install, but good to know.

edit: don’t you normally just open terminal to enable it, rather than recovery?
That's correct, it's not necessary to use recovery mode to enable trim.
 
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