I've recently installed ubuntu on a SSD, and would like to remove the old grub entries belonging to the ubuntu on the old HDD. I'd like to do one of the following:
- Remove the entry from grub (preferably without deleting /etc/grub.d/10_linux)
- Remove the files in the old HDD that tell the grub OS-prober that this is an OS.
Any help would be much appreciated.