( SOLVED ) DUAL BOOT-UP problem

[gold_finger]

If you installed another Linux distro after Linux Lite and told the new distro to install boot loader to the MBR of the drive (eg. to "/dev/sda"), then I'm guessing that you found that LL is listed as boot choice but won't boot properly.  If that is what you're problem is you can solve it by just booting with an LL dvd/usb and re-installing its grub boot loader to the MBR.  It will boot all of the distros properly.

Follow steps shown in this post to do that:  https://www.linuxliteos.com/forums/insta.../#msg18887