Dual boot Windows 10 and Linux Mint wont boot to GRUB.

Recently installed Linux Mint on my home computer. I am dual booting Linux and Windows 10. Windows 10 is installed on my SSD and Linux is on my HDD. My PC automatically boots into Linux, not loading GRUB.

I can open bios and manually load Windows or Ubuntu just fine. I would just like GRUB to auto open on power, so I don't have to go into BIOS every time.

Output from "boot-repair": https://paste.ubuntu.com/p/GPdx2g9dxp/

One thing I noticed in the boot-repair is it says I have windows 8, which I definitely don't.

The HDD Linux is on also has some windows stuff such as games, bigger files, etc. I don't want on my SSD.

Any help or input is much appreciated.

Thank you.

  • 1
    What happens if you set the default boot entry to ubuntu and immediately press the Shift or Esc key while booting? I'm confused why your Linux HDD /dev/sdb has a dos disklabel, but grub appears to be installed with a hidden menu. – Freddy Dec 7 '19 at 7:11
  • This isnt really an issue booting grub so much as telling your bios what to boot. Do both drives have an EFI partition each or do they share one between them? Having two can confuse some BIOS firmware – Philip Couling Dec 7 '19 at 11:43
  • Ubuntu lets you install to a MBR(msdos) partitioned drive in UEFI mode. Windows only installs in UEFI mode to gpt partitioned drives. And best to use gpt. And OP has BIOS boot loaders for Windows in gpt's protective MBR, and MBR of sdb. And grub installed in PBR of sdb5. With UEFI none of those boot loaders would ever be used or would only start boot & error out. – oldfred Dec 8 '19 at 16:14

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