

 Update device driver for Raid controllers that were not supported by build-in driver
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    1. Extract unRAIDServer-6.9.x-x86_64.zip to an USB flash drive with volume label 'UNRAID'.
    2. Extract arcmsr-1.50.0X.05-20210429-unRAID-6.9.x.zip to UNRAID USB flash drive /.
    3. Right-click on the file make_bootable and select Run as administrator.
       The syslinux utility will write the Master Boot Record and create a small hidden
       file named ldlinux.sys on the Flash device, making it bootable.
    4. Boot from unRAID USB flash drive.
    5. After boot up, login as root. type following commands to update device driver.

       # rmmod arcmsr
       # insmod /boot/arcmsr.ko.xz

    6. To make new arcmsr.ko.xz driver take effect for next boot, type following command to rebuild bzmodules.

       # cp /boot/buildbzmod /root
       # chmod +x buildbzmod
       # ./buildbzmod
       # reboot

