Q: How to delete old version of kernels in grub2 menu ? A: Delete them from /boot directory. Both initrd and vmlinuz files. Than run update-grub. Q: How to hide recovery mode in grub2 menu ? A: Change this line #GRUB_DISABLE_LINUX_RECOVERY=”true” as GRUB_DISABLE_LINUX_RECOVERY=”true” (delete command character.) in /etc/default/boot. Than run update-grub. Q: How to disable … Read more →