Recently I just downloaded Ubuntu-18.10-desktop-amd64 and make a bootable USB by universal usb installer. But when I boot this on my laptop it's showing following errors :
Booting 'Boot ubuntu-18.10-desktop-amd64'
(hd0,0)
Filesystem type is iso9660_Joliet, using whole disk [Linux-bzImage, setup=0x4200, size=0x821b58]
initrd /casper/ILUG
Error 15:(http://grub4dos.chenall.net/e/15) File not found
Press any key to continue...
How can I solve this?