Skip to content

Instantly share code, notes, and snippets.

@cfeduke

cfeduke/enable_trim.sh

Created September 30, 2011 15:14
Show Gist options
  • Save cfeduke/1254049 to your computer and use it in GitHub Desktop.
Save cfeduke/1254049 to your computer and use it in GitHub Desktop.
Download ZIP
Enable TRIM on OS X
Raw
enable_trim.sh
#!/bin/bash
# derived from http://www.mactrast.com/2011/07/how-to-enable-trim-support-for-all-ssds-in-os-x-lion/
# requires that you run with sudo
cp /System/Library/Extensions/IOAHCIFamily.kext/Contents/PlugIns/IOAHCIBlockStorage.kext/Contents/MacOS/IOAHCIBlockStorage /IOAHCIBlockStorage.original
perl -pi -e 's|(\x52\x6F\x74\x61\x74\x69\x6F\x6E\x61\x6C\x00).{9}(\x00\x51)|$1\x00\x00\x00\x00\x00\x00\x00\x00\x00$2|sg' \
/System/Library/Extensions/IOAHCIFamily.kext/Contents/PlugIns/IOAHCIBlockStorage.kext/Contents/MacOS/IOAHCIBlockStorage
sudo kextcache -system-prelinked-kernel
sudo kextcache -system-caches
echo "Reboot to complete"
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment