Bootable HDD not showing in boot order section

CarazanuV

Hello.
I have an Acer Aspire TC-780 and recently I installed a second HDD.
I want to dual boot Windows 10 and Linux Mint.
My problem is that the second HDD shows in advanced option, but it doesn't in boot options, even if I change to legacy.
There was a post here but there were no results.
The USB Installation medium shows in boot options.

billsey

Typically you have to have an OS installed on the drive before it's shown in the list. Your Windows 10 wants to boot in UEFI mode, so you'll want to install a UEFI Linux distribution. Likely you will have to disable Secure Boot in the BIOS in order to boot from an unsigned UEFI image. Boot the Linux install USB, have it install to the second drive and tell it to use UEFI instead of Grub and you should be good to go.

CarazanuV

I have Secure Boot disabled.
The problem is that the drive shows in advanced options, but it doesn't show in boot options.
When I installed it, I formated the drive as GPT, created an efi partition(that's where I installed the bootloader), a swap partition and and ext4 partition(that's where I installed linux).
But still no luck.
Thanks for the response thought.

ed4myra

hi,

it is not clear to me what you have done and whether you have installed linux on the 2nd HDD.

you said that you gpt formated the 2nd HDD and created a efi, swap and ext4 partition. Well normally you don't need to prepare this in advance, as the linux installer will do it for you.

Before you install linux with the usb stick, make sure that in BIOS you enable F12, so you can later choose your boot options.

Make sure if you are in the usb linux installer mode, that you see your first and second drive as sda and sdb, or nvme01 and sda, depending whether your first drive is a sdd.

Then it is important that you do a custom install where you can create your linux partitions and THEN choose to install the linux boot loader on the 2nd drive and not on the first drive. 

Hope this helps. Good luck! 

CarazanuV

I did exactly as you said and it didn't show.Also I tried another HDD with Linux on it and it didn't show. I found a post in this forums referring to my problem, but is another model
Also I tried installing without creating efi partition. 
Can I post the link to the post here?
Thanks for your suggestion.

ed4myra

- are you sure your linux mint installation is uefi compliant?
- did you check with the usb live installation that the boot order is correct? you can use the "sudo efibootmgr" command to check the boot order and the same command with --bootorder flag to change the boot order so linux grub menu is booted first

CarazanuV

Well, it should because it has .efi files
Now I am trying to install Linux Mint on MBR formated drive, because it might recognize it with CSM enabled

billsey

Mint supports UEFI booting, but you have to create the right install flash drive. Here's an old article with instructions, but I'd use Rufus instead of the older tool they suggest. Do you have Fast Startup disabled in the BIOS?

CarazanuV

I used Rufus for creating USB Bootable drive.
There is no Fast Startup in BIOS, but I disable the one in Windows.
I resolved my issue by formatting the drive in MBR, and installing Linux Mint in Legacy Mode.
Whenever I want to boot W10 I change the boot filter to UEFI
Still, thanks to all who gave their suggestion.