Hi All,\r\n\r\nI am using a MA790X DS4. with this configuration:\r\n\r\nMaxtor 80gb IDE (2 partitions, XP and a data partition). Jumpered to CS, on IDE0 slave. An optical drive on IDE0 master, again, set to CS\r\nWDC 320Gb SATA on IDE1 M (2 partitions, W7 and a data partition)\r\nWDC 320GB SATA on IDE2 M (1 data partition)\r\n\r\nNow, I wanted to remove the Maxtor, and leave just W7, however, when I do that, only 1 of the SATA drives is recognised, and the system hangs at 'Verifying DMI Pool Data......'\r\n\r\nI've tried various configurations - changing boot order, removing the optical drive, disabling the IDE in the BIOS etc. I have reset the CMOS by removing the battery for 30 minutes and restarting, but the system only boots sucessfully when the Maxtor is in place.\r\n\r\nI hope I've included all the info that's needed. Any ideas anyone, it's driving me crazy!\r\n\r\nMany thanks,\r\n\r\nRichard.