如何讓老 MAC 電腦也能更新到新版 macOS

IMPORTANT NOTICE: This tool force-enables TRIM for all relevant attached devices, even though such devices may not have been validated for data integrity while using TRIM.

本文介绍如何在2012年的Mac Pro上替换原有光驱为固态硬盘（SSD），并详细说明了TRIM功能的重要性及其启用方法。 通过使用TrimEnabler等工具，可以在Mac上为第三方SSD成功开启TRIM支持。

By enabling Trim, the SSD data blocks are cleaned and maintained using our custom Trim driver. The result is shorter writing operations, unlocking the maximum potential of your SSD while at the same time minimizing wear on the data cells.

Apple macOS enables Trim for internal Apple SSDs only. Advanced users can also enable Trim for USB connected SSDs with Apple APFS formatted partitions.

在Mac OS X 10.10.4 以上系統都已經可以支援 SSD 的 RIM 機制，這個機制意思為 Mac系統可以針對 SSD 讀取與寫入速度進行優化，可以判定 SSD 還有哪些區塊尚未被使用，就會針對未被使用的區域進行寫入/覆寫，也能避免 SSD 會因容量不足，並維持原有的讀寫速度。

TRIM is designed to allow the Operating System to inform a solid-state drive (SSD) which blocks of data are no longer considered in use and can be wiped internally.

融合后建议开启trim，可以给SSD写入提速的一种模式，打开关于本机→系统报告→sata（查看trim状态）显示否的话就继续往下操作开启trim，