After installing an OS/kernel update through Ubuntu's built-in Update Manager (or Software Updater), a new boot menu entry is added (one with the latest kernel) and the previous boot menu entry is kept in GRUB.
I'm just wondering if these two boot menu entry are pointing at the same OS. I want to keep storage redundancy as minimal as possible. To add to this, running "update-grub" shows that the two entries point to the same partition.
That said, how do I safely remove the older boot menu entry? I know I can do it through GRUB Customizer, but I want to make sure it won't break anything and that it's not just an illusion.
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