Hello, Similar question that has been asked before with all previous suggestions looked into . I had a hard drive failure and re-formated the drive and re-installed Windows 10. But now I cannot get my other internal HDD`s to be recognized. They are used just for data storage ie music and photo images. I have tried various lead swapping and drive swapping but the system still only detects the main boot drive. Even disk manager detects one. I have gone into the bios and switched anything relating to HDD`s on. This has made no difference. Thank-you for any help on this.