I've got a new ssd and would like to install ubuntu on it and dual-boot it on my main machine with windows. I have two drives beyond the new one, 1 ssd and 1 hdd, with mbr partitions. Windows is installed on the ssd. (ssd is primary partition and boot drive, BIOS mode: legacy)

Everything is working and both windows and the ubuntu installation media finds the new drive. Now my question is: which drive do I install the boot loader on? I would like to be able to choose which system to load at boot.

Any help is much appreciated :)

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2 Answers

Boot loader will be installed during Ubuntu installation. I sugest install boot loader (Grub) to MBR of hardrive where Windows is installed. If you are using EFI system partion, also use the same hard drive. You can turn off the Security Boot in BIOS before start Ubuntu installation. Some third-party drivers (e.g. wifi) can be not installed properly. Grub boot menu will be created automatically. Good luck.

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Where to Install Bootloader

You can put the boot loader just about any where you want, even on a USB drive.

If you put it on the Windows disk it will overwrite the Windows bootloader, which is not bad, unless you decide to remove Ubuntu.

If Windows boots Legacy, Ubuntu and the new bootloader should also boot legacy. For GRUB to work with all OS they all need to be installed in same BIOS/UEFI mode.

I would suggest installing Ubuntu in Legacy mode using the Something else option and put GRUB on the Ubuntu Disk. It will add Windows to the boot menu automatically, If it does not for some reason, just run sudo update-grub

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