OpenWrt – USB drive present in dmesg log but don’t exist in /dev/

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After installation of the latest OpenWrt version (21.02) on the router with a USB port and installing all required packages for USB following to official manual https://openwrt.org/docs/guide-user/storage/usb-drives-quickstart – USB drive successfully connected and worked as /dev/sda with partition /dev/sda1! But after reboot devices in /dev/ gone!

In dmesg had messages that USB device is exist but didn’t saw any messages about mount. For other devices (such as USB flash) device /dev/sda was successfully detected! So, problem in USB Drive driver.

Resolution was on another page https://openwrt.org/docs/guide-user/storage/usb-installing – for support some of USB drives need to install UASP (USB Attached SCSI) using command: 

opkg update && opkg install kmod-usb-storage-uas

After UASP driver installation device was successfully detected by OpenWrt (in /dev/ directory) and mounted! 

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