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Grub4dos To Boot ISO Disk Image

suntong profile image suntong Updated on ・1 min read

Using grub4dos to boot Ubuntu Ubuntu 18.04 ISO disk image, here is the entry for the file MENU.LST:

title Ubuntu 18
  fallback 6
  find --set-root /iso/ubt1804.iso
  map --heads=0 --sectors-per-track=0 /iso/ubt1804.iso (0xff)
  map --hook
  root (0xff)
  kernel /casper/vmlinuz file=/cdrom/preseed/ubuntu.seed boot=casper iso-scan/filename=/iso/ubt1804.iso splash
initrd /casper/initrd.lz

NB,

  • For Ubuntu 64bit from 14.04 to 17.10 vmlinuz.efi was used, so kernel has to be /casper/vmlinuz.efi, but
  • For older versions and 18.04+ use /casper/vmlinuz
  • For Ubuntu 32bit, it has always been vmlinuz
  • For smaller ISO disk images, or your RAM is extremely big, you can use --mem for the map command to put the whole disk into system memory, like this: map --mem /iso/smallcd.iso (0xff) || map --heads=0 --sectors-per-track=0 /iso/smallcd.iso (0xff)

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