Date: December 2021 Category: Sysadmin Tools / Tech Guides

While this is the final update for the legacy multiboot concept, post-2021 trends include:

Thus, the 2021 spec is designated as final—no further architectural changes are planned for BIOS-era multiboot HDDs.

| Tool | Method | 2021 Status | Best For | |------|--------|-------------|-----------| | Ventoy | Modifies partition table, mounts ISOs directly | ✅ Final stable v1.0.61 (Dec 2021) | Easiest, UEFI + Secure Boot | | Easy2Boot | .imgPTN files, partition switching | ✅ RMMC final 2021 update | Legacy BIOS, complex tools | | GRUB2 (manual) | Custom grub.cfg with loopback | ❌ Declining in 2021 | Advanced customization | | YUMI / MultibootUSB | Extracts ISOs to folders | ⚠️ Legacy boot only | Simple but outdated |

Winner (2021 Final Recommendation): Ventoy – due to non-extraction method, updateable without reformatting, and Windows 11 ISO support.