However, if you just want a simple “plug-and-play” USB drive, Ventoy is simpler. And if you only boot Linux ISOs, GRUB’s built-in loopback is sufficient.
ntboot7z wim=/sources/boot.wim index=1 The index parameter selects which image inside the WIM (e.g., 1 for Windows PE, 2 for Windows Setup). If you have windows.7z containing an ISO inside, you can do: ntboot7z
Combine NTBoot7z with grub-rescue on a hidden partition. Then, even if your main OS dies, you can boot recovery ISOs directly from your hard drive without scrambling for a USB stick. That is the true power of NTBoot7z. Have you used NTBoot7z in a unique way? Share your experiences in the community forums. And always keep a backup of your bootloader configuration before experimenting! However, if you just want a simple “plug-and-play”