I've tried to install several times so far Linux Mint 19 alongside Windows 10. Windows 10 is the primary OS.

I installed Linux on /dev/sda making manually a swap area, root and home partitions and when the installation is finished and I restart and the system boots automatically in Windows like there was a single OS installed.

What I'm doing wrong and how to fix this issue?


Before I couldn't access to Windows nor Linux, so I was able to fix the Windows boot following this steps, then the Windows boot partition now is FAT32 EFI.

Run command prompt from Windows installation DVD
sel dis 0
sel par 1
del par override
cre par EFI
for fs=FAT32 quick
assign letter=T
bcdboot C:\Windows /s T: /f ALL

Then reboot the computer
  • 1
    Is Windows installed in UEFI mode or BIOS mode? (That is, does the Windows disk have a FAT32 "EFI system partition" with bootmgfw.efi in it, or does it have an NTFS "Microsoft system partition" with bootmgr in it?) And did you install Mint in the same mode? – user1686 Sep 19 '19 at 7:10
  • @grawity Thanks for answer. Since before appeared for me the Minimal Bash-Like... menu and I couldn't access to Windows nor Linux, I used a command prompt from installation CD of Windows and sent these commands diskpart, sel dis 0, sel par 1, del par override, cre par EFI, for fs=FAT32 quick, assign letter=T, exit, bcdboot C:\Windows /s T: /f ALL, exit and after that I was able to boot in Windows, so it think is FAT32 EFI partition. – Ger Cas Sep 19 '19 at 11:29

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