In other words, this article shows how to dual-boot Manjaro Linux and Windows 10 on a computer with UEFI firmware.
At the end, GRUB, the Manjaro boot manager/boot loader, will be the default boot manager of the computer, which will give you the option of booting into Manjaro or Windows 10 whenever you (re)boot the computer. For a pain-free and successful operation of the sort that, it is recommended that you disable Secure Boot. From the BIOS or UEFI setup utility, configure the computer to boot from external media. After that, you need to free up disk space from your computer by shrinking the C drive or other partition with enough free space on it.
Let the computer boot into the Manjaro Live desktop.
While on there, launch Calamares, the distribution’s graphical installation program.
If it does not, access the computer’s boot menu and select the appropriate entry.
In Figure 2, that entry is EFI USB Device (USB Flash Disk), and it should be the same on your computer.
The first partition we’ll be creating will be mounted at /, and you can assign from 20,000 MB (20 GB) to 50.000 MB (50 GB) to it. The last partition will be for swap, disk space that the system may use as (virtual) memory.
A default installation of Manjaro 16.10 KDE takes up less than 7 GB of disk space, so if you don’t have that much free disk space to spare, less will do, provided it’s not less than 7 GB. From Use as, select linuxswap, then assign some disk space to it. Less if you don’t have that much disk space to spare. Back to the manual partitioning window for the last time, the partitions you just created will be listed under the existing (Windows 10) partitions.
When completed, the partition should show partitions and a free disk space similar to the one in Figure 1.
If you need to encrypt the Manjaro 16.10 side of this setup, see Disk encryption with Calamares, the Linux installer for assistance in using the installer’s disk encryption feature.
If you follow the steps as given here, you should have yourself a dual-boot system running your favorite desktop flavor of Manjaro Linux and Windows 10 in about 12 minutes.
To start creating partitions, select the free space as shown in Figure 5, then click the Create button.
That procedure has to be repeated for all the partitions you’ll be creating.