Initialize will format the RAID volume (create). If you already have information on your Hard Disk Drives, it is better to create a backup first. The chipset SATA mode in the BIOS needs to be on RAID.
Intel® Rapid Storage Technology (User Guide)
I have just read the user guide but this is also unclear to me. If I have an existing mirror raid 1 with data, but not the OS, and the volume has not been initialised ie because I created it in the BIOS rather than the Windows gui.
If I subsequently initialise the raid volume from the irst application doesn't delete the existing data ?
obviously I will make a backup but I would like to know the answer to this question.
Initializing the RAID feature with Intel application is not going to erase the information, it will just verify the integrity of the RAID configuration.