Centos6.2 Disk sda contains bios raid metadata Solution

When centos 6.2 is installed today, when the hard Disk is detected, the following error is reported: Disk sda contains bios raid metadata, but is not part of any recognized bios raid sets. ignoring disk sda found a solution on the Internet. After testing, the hard disk was finally detected! You can perform the next installation! Www.2cto.com: press the TAB key to go to the installation and selection menu. The command line mode of Linux is displayed, then add nodmraid after the command line is started (note that a space is added before) and press ENTER. Next, you will find the hard disk in the installation process. The nodmraid command is to disable the array.