(Prefacing with: I'm not a complete newbie; I've been using the command line for at least 2 years, yet still don't know too much about what I'm doing yet. I have had my previous/current Manjaro installed as dual boot for ~7 months.)
Things started acting weird with a Manjaro installation I have, so I think it is best to just reinstall it on the same partition (yes, I've backed up my files) rather than trying to fixed everything that I screwed up.
Booted from USB. When running the installer, I select the partition that I want to replace (the old one) and click the replace partition button.
The installation process fails (picture below):
Yes, I am dual booting (or was...?). Windows is installed on sda and my Manjaro on sdb. Is the bootloader NOT installed on the main (sba) harddrive? Otherwise, how can I solve this error? To be honest, I just don't really want to screw up anything else haha.
Thanks in advance!