Sure, no problems at all.


Well, it holds the vmlinuz, initrd, System.map, abi (?), and config files.
Plus GRUB and it's various files.

On my notebook here, with four kernels (but only *two* initrd files), that's 33MB.

It's really easy to accumulate kernels through updates and the like -- they generally leave the old ones laying around just in case the newly installed one fails to boot for any (peculiar) reason.

50MB is a tiny, tiny fraction of 1TB (1000000MB). Amazing, that.