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Recently I replaced my Optical Drive with another Hard drive (so it is my secondary hard drive) on my laptop Dell Inspiron 15 3542.

Now I installed my Windows 10 on the primary hard drive and Ubuntu on the secondary hard drive. Windows boots but Ubuntu doesn't.

I replaced my primary hard drive (which contains Windows 10) with the secondary Hard Drive (which contains Ubuntu) now Ubuntu booted successfully but Windows 10 won't boot. I also tried to install Ubuntu on the secondary hard drive and boot files on primary hard drive but I corrupted Windows 10.

Which ever hard drive I put to the primary slot it boots, the other one doesn't. I also tried turning on and off UFEI and Legacy settings in the BIOS but nothing working.

I want to keep my Windows 10 on the primary hard drive and Ubuntu on the secondary hard drive, how should I do it?

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  • Are you using the bios boot menu to select boot device? F12 at the Dell splash screen.
    – Moab
    Commented Jan 27, 2020 at 12:13
  • Yes i did but there is no option for secondary hard drive.there is option for cd drive which i also tried to get boot from but it isn't working.
    – BigBrownBear
    Commented Jan 27, 2020 at 18:12
  • I assume there is a bootable OS on the cd drive bay disk?
    – Moab
    Commented Jan 27, 2020 at 18:24
  • Yes there is bootable OS on both hard drives
    – BigBrownBear
    Commented Jan 27, 2020 at 18:54
  • What exactly happens when you select that boot device?
    – Moab
    Commented Jan 27, 2020 at 20:51

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