这是一个创建于 3829 天前的主题，其中的信息可能已经有所发展或是发生改变。
Yosemite 10.10.4 加入了一个新命令trimforce，可以强行打开第三方ssd的trim功能，只需一步：
$ sudo trimforce enable
只有较新的ssd才能顺利开启，尝试前一定要备份数据！备份数据！备份数据！
附上man trimforce
TRIMFORCE(8) BSD System Manager's Manual TRIMFORCE(8)
NAME
trimforce -- enable TRIM commands on third-party drives
SYNOPSIS
trimforce verb
DESCRIPTION
trimforce enables sending TRIM commands to third-party drives attached to an AHCI controller. By default, TRIM commands are not sent to third-party drives.
Use extreme caution when enabling TRIM, as some drives may not correctly handle the commands. trimforce must be run by the system administrator.
VERBS
enable
Start sending TRIM commands to AHCI-attached third-party drives. Requires a reboot to take effect.
disable
Stop sending TRIM commands to AHCI-attached third-party drives. Requires a reboot to take effect.
help
Display brief usage syntax.
ERRORS
trimforce will exit with status 0 if successful, or with an appropriate error if it cannot parse input, allocate memory, or is unauthorized to perform its
work.
HISTORY
The trimforce utility first appeared in OS X 10.10.4.
OS X 27 April 2015 OS X
$ sudo trimforce enable
只有较新的ssd才能顺利开启，尝试前一定要备份数据！备份数据！备份数据！
附上man trimforce
TRIMFORCE(8) BSD System Manager's Manual TRIMFORCE(8)
NAME
trimforce -- enable TRIM commands on third-party drives
SYNOPSIS
trimforce verb
DESCRIPTION
trimforce enables sending TRIM commands to third-party drives attached to an AHCI controller. By default, TRIM commands are not sent to third-party drives.
Use extreme caution when enabling TRIM, as some drives may not correctly handle the commands. trimforce must be run by the system administrator.
VERBS
enable
Start sending TRIM commands to AHCI-attached third-party drives. Requires a reboot to take effect.
disable
Stop sending TRIM commands to AHCI-attached third-party drives. Requires a reboot to take effect.
help
Display brief usage syntax.
ERRORS
trimforce will exit with status 0 if successful, or with an appropriate error if it cannot parse input, allocate memory, or is unauthorized to perform its
work.
HISTORY
The trimforce utility first appeared in OS X 10.10.4.
OS X 27 April 2015 OS X
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1
q84629462 2015 年 7 月 20 日 via Android
我刚刚没有备份数据就直接使用命令开启了，现在想起一身冷汗
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4
Epsil0n9 2015 年 7 月 20 日
想知道macbook自带的ssd默认开过trim吗？
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5
squid157 2015 年 7 月 20 日
10.10.4的beta里面没有这个，这个是在el Capitan出现的。不知道正式的10.10.4是不是有它。
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8
66beta 2015 年 7 月 20 日
只关心第三方SSD什么时候可以休眠？
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12
squid157 2015 年 7 月 20 日
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15
Citrus 2015 年 7 月 20 日 via iPhone
@feikaras 那可能是我记错了。。。我看到消息的时候已经10.11 dp2 了，所以没注意 dp1 的时候有没有，抱歉。。。
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16
lincanbin 2015 年 7 月 20 日
伟大！要改变世界。
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