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7.4.2. Are You Unable to Boot With Your RAID Card?

If you have performed an installation and cannot boot your system properly, you may need to reinstall and partition your system's storage differently.
Some BIOS types do not support booting from RAID cards. After you finish the installation and reboot the system for the first time, a text-based screen showing the boot loader prompt (for example, grub>) and a flashing cursor may be all that appears. If this is the case, you must repartition your system and move your /boot partition and the boot loader outside the RAID array. The /boot partition and the boot loader must be on the same drive.
Once these changes have been made, you should be able to finish your installation and boot the system properly. For more information about partitioning, see Section 5.4.8, “Installation Destination”.