I currently have only Manjaro XFCE installed on this laptop. Since I need to flash some mobile phones with Odin, I’d need the Windows environment. I am contemplating installing Win 10 alongside this Manjaro, and I’d like to avoid making major mistakes along the way. I am aware of the fact that this sequence of installation (first Manjaro, then Win10) is not as smooth a process as it is the other way round, and that’s another reason I’d like to hear your advice on how to fix the grub etc.
There are four partitions on the hard drive. This is how it looks from Gparted:
Manjaro XFCE is installed on SDA2 partition. I used the BIOS mode, although this laptop apparently supports UEFI as well. But since BIOS is already working fine, I’d like to keep it that way.
SDA3 is the swap drive for Manjaro. SDA1 is formatted as NTFS and I’d like to install Win10 on that partition.
Could somebody point me to the tutorial or write what exactly I should do after the Win10 installation in order to fix the Manjaro grub? I suppose I should boot into the Manjaro’s live USB and try to fix it from there, but I’m not sure how to do it exactly.