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Update external_usb_ssd_UAS.md

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aiminick 2021-05-16 21:32:48 +08:00 committed by GitHub
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@ -8,6 +8,8 @@
#### OPEN Trim for external usb ssd #### OPEN Trim for external usb ssd
- **1. Check TRIM support**
``` ```
sudo fstrim -v / sudo fstrim -v /
``` ```
@ -24,6 +26,8 @@ sdb 0 0B 0B 0
If the **DISC-MAX** value is **0B**, then TRIM is not **enabled**. If the **DISC-MAX** value is **0B**, then TRIM is not **enabled**.
- **2. Enable TRIM**
Find the USB **idVendor** and **idProduct** : Find the USB **idVendor** and **idProduct** :
``` ```
@ -41,6 +45,8 @@ ACTION=="add|change", ATTRS{idVendor}=="174c", ATTRS{idProduct}=="1153", SUBSYST
Then reboot, the TRIM will be **enabled**. Then reboot, the TRIM will be **enabled**.
- **4.Fstrim the SSD device**
1st time, run "**fstrim -v /**" successfull: 1st time, run "**fstrim -v /**" successfull:
``` ```
@ -56,7 +62,7 @@ sda 0 512B 4G 0
└─sda2 0 512B 4G 0 └─sda2 0 512B 4G 0
``` ```
Automatic trimming - **5.Automatic trimming**
The last thing you will need to do to make sure the TRIM command is run automatically in the background The last thing you will need to do to make sure the TRIM command is run automatically in the background
@ -68,6 +74,8 @@ To do that, run the command:
$ sudo systemctl enable fstrim.timer $ sudo systemctl enable fstrim.timer
``` ```
By default, it will run weekly. By default, it will run weekly.
--
All done. All done.