Comment 3 for bug 1912677

Wow, really? But if multiple Linux partitions (common since the days of LILO) are discouraged now, why is os-prober searching for Linux distros on unmounted partitions and adding them to grub.cfg? If it's just for Windows and anything else isn't supported, maybe it should only add Windows installs.

I don't mind adding grub stanzas by hand for distros on other partitions. But automatically added grub entries that are wrong and won't boot just clutter the boot menu, making it hard to tell which are the working entries.