Grub

• BootMed
• SystemRescueCD
• Ubuntu Rescue Remix
• Trinity Rescue Kit
• BackTrack Linux
  • Superseded by Kali Linux
• Hiren's BootCD
• Ultimate Boot CD – many diagnostic tools on one bootable CD (BIOS, CPU, HDD, memory)
• KNOPPIX
• Kaspersky Rescue Disk 10
  • Creating Kaspersky boot disk
• Where can I download Windows 7 (legally from Microsoft)?
• MemTest

• Debian Live CD
• Debain NetInstall kernel: initrd.gz + linux
• Debain Stretch NetInstall ISO or initrd.gz + linux

• Bootable CD Wizard – позволяет создавать мульти-загрузочные (Multiple-Image Bootable CD) компакт-диски для компьютеров, которые не поддерживают мульти-загрузку с компакт-дисков.
  • mkisofs-2.01 port to MinGW (with extra bonuses)
• How do I place a bootable ISO on a USB drive?, How to write precompiled image to USB flash drive?
  • Rufus (can also write dd images to USB flash)
  • UltraISO
  • dd (read/write images)
• How to create a bootable Windows USB flash?
• Ventoy – an open source tool to create multi-boot USB drive for ISO/WIM/IMG/VHD(x)/EFI files based on Grub2.

• USB Boot Test:
  qemu -boot c -hda /dev/sdb -m 512

• Grub For Dos v0.7 Manual
• Booting from ISO Images (Загрузка из ISO образа)
• GRUB4DOS and WINGRUB (outdated)
• GRUB всемогущий, или Делаем загрузочную флешку
• grub menu.lst

Mount your USB to e.g. /mnt/usb and install Grub on it using the command (use actual USB device e.g. /dev/sdd):

grub-install --force --no-floppy --boot-directory=/mnt/[mountpoint]/boot /dev/sdX

• Установка Debian GNU/Linux с USB Flash
• Мультизагрузочная USB-флешка с GRUB в качестве загрузчика
• MultiBoot USB with Grub2
• Мультизагрузочная флешка
• Создание multiboot HDD в linux (GRUB2+memdisk+grub4dos)
• Создаем загрузочную USB-флешку на GRUB1/2
  • Grub Menulist
  • grub.cfg
• Put Ubuntu onto your USB flash drive

• GRUB2 Archlinux Wiki
• GRUB2 Gentoo Wiki

• How to boot from an .iso file in GRUB2? and How can I boot into an ISO file in GRUB?

  menuentry "Bootable ISO Image: install-x86-minimal-20130820" {
     insmod part_msdos
     insmod ext2
     set root='(hd0,msdos7)'
     search --no-floppy --fs-uuid --set=root <individual uuid replaced>
     linux16 /boot/memdisk iso
     initrd16 /boot/images/install-x86-minimal-20130820.iso
  }

• MemDisk (download)

More configs:

• Grub2 ISOBoot Examples
• grub.cfg
• grub.cfg
• grub2
• How to boot live iso images?

Brand-new Universal loadeR from GRUB. It's based on GRUB, and add features like new object format and configurable menu system.

• Grub2 based bootloader with some grub4dos features like mapping support