Hi there!
In order to do some hardware testing with different linux systems on my Lenovo Thinkpad W530 I used a spare mSATA SSD I have in my laptop to install Manjaro (/dev/sdb).
My SOLUS installation is one in legacy mode and had been installed onto a different SATA SSD (/dev/sda).
Installing Manjaro worked fine except that I made the mistake to allow the installer to install the boot loader on the SOLUS drive which seems to have overwritten the original GRUB from my SOLUS installation.
Problem is that after I encountered booting errors I went on to delete the Manjaro installation. That killed the new bootloader so that now I cannot access my SOLUS drive.
So I went through your article at https://getsol.us/articles/troubleshooting/boot-rescue/en/ and followed it step by step. I skipped the UEFI section as my installation is a non-UEFI one. All commands seem to have worked fine. At the end I did sudo clr-boot-manager update but that did not work. I got a COULD NOT FIND RUNNING KERNEL (or something of the sort) error.
As all my folders and files are still there I do not want to do a fresh install. I had rather repair GRUB but am stuck and don't know what to do now.
Any help would be appreciated!
EDIT:
My solution was in fact noting SOLUS-related but the wonderful RESCATUX live system:
Installed it onto a USB pen drive, watched the instruction video on Youtube and had the bootloader of my screwed up installation up and running within 10 minutes.
So, now I have two running and up-to-date installations - ha ha ha...
Christ, had I known any earlier...!
Devs, please, mark this as SOLVED.
Thanks!