Patch the file to enable TRIM support:

helmetpastoralSoftware and s/w Development

Dec 13, 2013 (3 years and 10 months ago)

262 views



TRIM can be enabled by using the following Terminal commands. Copy
these commands and run them in Terminal:

Backup the file that you’re about to patch:

sudo cp
/System/Library/Extensions/IOAHCIFamily.kext/Contents/PlugIns/IOAH
CIBlockStorage.kext/Contents/M
acOS/IOAHCIBlockStorage
/IOAHCIBlockStorage.original

Patch the file to enable TRIM support:

sudo perl
-
pi
-
e
‘s|(
\
x52
\
x6F
\
x74
\
x61
\
x74
\
x69
\
x6F
\
x6E
\
x61
\
x6C
\
x00).{9}(
\
x00
\
x51)|$1
\
x0
0
\
x00
\
x00
\
x00
\
x00
\
x00
\
x00
\
x00
\
x00$2|sg’
/System/Library/Extensions/IOAHCIFamil
y.kext/Contents/PlugIns/IOAH
CIBlockStorage.kext/Contents/MacOS/IOAHCIBlockStorage

Clear the kext caches:

sudo kextcache
-
system
-
prelinked
-
kernel

sudo kextcache
-
system
-
caches

Important: reboot your Mac!

To disable TRIM support in the future:

sudo perl
-
pi
-
e
‘s|(
\
x52
\
x6F
\
x74
\
x61
\
x74
\
x69
\
x6F
\
x6E
\
x61
\
x6C
\
x00).{9}(
\
x00
\
x51)|$1
\
x4
1
\
x50
\
x50
\
x4C
\
x45
\
x20
\
x53
\
x53
\
x44$2|sg’
/System/Library/Extensions/IOAHCIFamily.kext/Contents/PlugIns/IOAH
CIBlockStorage.kext/Contents/MacOS/IOAHCIBlockStorage

Finally, if this does no
t work as expected, or if something goes wrong,
simply restore the backup:



sudo cp /IOAHCIBlockStorage.original
/System/Library/Extensions/IOAHCIFamily.kext/Contents/PlugIns/IOAH
CIBlockStorage.kext/Contents/MacOS/IOAHCIBlockStorage

This patch simply edits
a file called IOAHCIBlockStoage, removing a
string that makes TRIM work for only Apple SSDs.