Linux Mint 19.1 dual boot via USB problem
 

Linux Mint dual boot problem
I am attempting to set up Linux Mint 19.1 in a dual boot situation from a USB.
I have followed the baby steps outlined via the following link
https://itsfoss.com./guide-install-l...-boot-windows/
I am a noob, so have followed the steps faithfully through to the end, and apart from slight differences between my screen display and the video, the screens appear identical.
However, on clicking “Install Now” I get the following message:

The partition table format in use on your disks normally requires you to create a separate partition for boot loader code. This partition should be marked for use as a “Reserved BIOS boot area” and should be at least 1 Mb in size. Note that this is not the same as a partition mounted on /boot.

If you do not go back to the partitioning menu and correct this error, boot loader installation may fail later, although it may still be possible to install the boot loader to a partition.


Unfortunately, as I have booted into a live session from the USB I am unable to save relevant screenshots of my progress. Manual comparison of the “installation” screen on my laptop and the screen shown in the video appear identical.
What now?

The message you have occurs when installing grub bootloader to a gpt type disk in legacy mode. a 1 mb partition flagged as bios-boot/bios-grub is needed that will need to be created manually. The link you following doesn't cover this.

If this an uefi, system start over, reboot, when you use the f-keys, select the usb efi option and continue as before.

Thanks for the feedback. Sadly a lot of your reply is still confusing to me - this is my first foray into Linux and until it boots up I cannot even start to learn.

To clarify, I have amended the BIOS boot to Legacy in order to load the live session. Then I have triggered the "installation" process. I had previously partitioned my HDD into C: (350Mb) and unallocated a further 100Mb to locate the Mint installation.
During the setup I selected the "free space", added a / (root) of 20Mb using ext4 file system
Then I again selected the "free space", added a 4Gb "swap area" partition, and finally
allocated the remaining free space to /Home, selecting Logical, Beginning, and ext4 journalling file system, with the mount point "HOME".
It is at this point I clicked on "Install now" which, in turn, led to the boot loader problem mentioned initially (above).
Any further pointers you can offer would be greatly appreciated.

AFTERTHOUGHT: Does it make a difference if I have chosen Linux Mint 19.1 32bit?

Yes, 64bit would be a better option, allow you to boot without having to enabling legacy mode and allow you to boot windows without using fkeys to change between the two systems.