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#61
I am running on an Intel DX58SO motherboard and recently upgraded from Win 7 to Win 10, at which point one of my CD/DVD drives disappeared from "This PC". I checked BIOS and saw that both drives were listed and recognized, one on SATA port 2 and one on SATA port 3. SATA 0 is my SSD drive and SATA 1 was unused. On a whim I moved the CD/DVD connection from SATA 2 to SATA 1 and discovered that both drives were then recognized by Win 10. I then moved the second drive's connection from SATA 3 to SATA 2, only to find that the second drive had disappeared from Win 10. When I moved the second drive's connection back to SATA 3 the drive reappeared in Win 10. Note that in all configurations the BIOS correctly recognized that both drives were present.