If you are not applicable text-to-speech feature, then you certainly would not use the OS X built-in voice files. Remove the system voice files - you can save the hard disk space 500MB-3GB+ Of course, if you want to re-open Safe Sleep feature, just below command. $ sudo chmod 000 /private/var/vm/sleepimage Use the following command to delete the file $ sudo rm sleepimageįinally, we want to prevent OS X continues to create the file, so we need the following command generates an empty file can not be replaced $ sudo touch sleepimage Then navigate to /private/var/vm/ delete files that already exist sleep image $ cd /private/var/vm/ If you want to disable SafeSleep function, we need to enter the following command in a terminal: $ sudo pmset -a hibernatemode 0 However, we can use OS X's auto-save feature to save his job at the time the battery will be depleted. Close SafeSleep state can not let the system automatically create the file, the disadvantage is that when the Mac is not the battery, you can not revert to the previous. sleepimage files with Mac computers as large memory, which means that if your memory is 4GB, the file will have 4GB, if it is 16GB, the file will have 16GB. This sleep mode when the battery Mac will not sleep or the contents of memory stored on sleepimage files on the hard disk.

The following command can turn off the OS X native sleep function, which is SafeSleep.

Disable Safe Sleep Sleep mode - can save a 4GB-16GB of space

Clean up mac computer for space