How to install RAID driver

When installing Linux operating system, use U disk to load server RAID driver

1. First copy the driver to U disk in windows environment, 2 Use redhat's first disk to boot, when prompted to load the hard driver, select skip, this is the OS does not detect the hard disk prompt, then you can skip, then load the graphical interface, this time We can switch to the console by pressing CTRL+ALT+F2. (Supplement: The driver of the hard disk is loaded before the graphical interface appears. We can switch to F3 after the console appears, and the kernel can be seen in F4. And the detailed process of installation) 3. Create two directories in memory mkdir /a /b 4. mount /dev/sda1 /a 5. cp /a/megaraid_sas-rhel40-all.img /b 6. umount /a 7 Dd if=/b/megaraid_sas-rhel40-all.img of=/dev/sda 8. Start the server again, type linux dd when boot appears, then follow the prompts to choose to add drivers from /dev/sda and you will find Hard disk (if multiple sdx devices appear, you can press CTRL+ALT+F4 See which device is the U disk)