"grub-n-iso" is a nickname for booting via grub2 and an ISO file. This is documented at several places in the Ubuntu Wiki and Help pages, and there are some tutorial threads at the Ubuntu Forums. See for example
General 'grub-n-iso' links
https://wiki.archlinux.org/index.php/Multiboot_USB_drive
https://help.ubuntu.com/community/Grub2/ISOBoot
https://help.ubuntu.com/community/Grub2/ISOBoot/Examples
https://help.ubuntu.com/community/Grub2/CustomMenus
https://help.ubuntu.com/community/grub-n-iso
'BIOS and UEFI' links
How to Create a EFI/UEFI GRUB2 Multiboot USB drive to boot ISO images http://ubuntuforums.org/showthread.php?t=2276498
One pendrive for all PC (Intel/AMD) computers http://ubuntuforums.org/showthread.php?t=2259682
To be precise, I was using a pendrive created via the 'grub-n-iso' method for iso-testing of
http://ubuntuforums.org/showthread.php?t=2259682
that I made (and shared in that link).
"grub-n-iso" is a nickname for booting via grub2 and an ISO file. This is documented at several places in the Ubuntu Wiki and Help pages, and there are some tutorial threads at the Ubuntu Forums. See for example
General 'grub-n-iso' links
https:/ /wiki.archlinux .org/index. php/Multiboot_ USB_drive
https:/ /help.ubuntu. com/community/ Grub2/ISOBoot
https:/ /help.ubuntu. com/community/ Grub2/ISOBoot/ Examples
https:/ /help.ubuntu. com/community/ Grub2/CustomMen us
https:/ /help.ubuntu. com/community/ grub-n- iso
'BIOS and UEFI' links
How to Create a EFI/UEFI GRUB2 Multiboot USB drive to boot ISO images ubuntuforums. org/showthread. php?t=2276498
http://
One pendrive for all PC (Intel/AMD) computers ubuntuforums. org/showthread. php?t=2259682
http://
To be precise, I was using a pendrive created via the 'grub-n-iso' method for iso-testing of
http:// ubuntuforums. org/showthread. php?t=2259682
that I made (and shared in that link).