The patient is a Dimension 4550, XPHome, SP3, BIOS A08. Everything's\nbeen fine, until...\n\nI opened the box to remove one of two optical drives. I had to remoed\nboth power and data cables to both the optical drives to gain access to\nthe one I wanted to remove. I did that just fine, and cabled back up the\noptical drive that was staying installed. I did not install another\noptical drive.\n\nNow, upon Restart or Turn Off/Start, POST gives Secondary Hard Disk Drive\n1 Not Found, Hit F1 to continue, F2 to enter Setup Utility. Hmmm... I\nhit F1.\n\nFile Explorer shows both primary and secondary drives, and I can navigate\nto and open files on the secondary drive. There is nothing to indicate\nthere is any trouble with the secondary drive.\n\nIt works perfectly.\nIt appears in Device Manager as on the primary IDE channel, as device 1,\nin UDMA5 mode.\nDisk Management shows it as 'healthy'.\nBelarc Advisor shows it as 'SMART' healthy.\n\nSo, I disabled it in Device Manager, hopping to 'jiggle' it into action,\nrebooted, and still got the same error message. I went into Device\nManager and re-enabled it, rebooted, but still the same error message.\n\nI checked the BIOS settings, and it is set as my secondary drive, in Auto\nconfiguration.\n\nAnyone have any ideas?