Supported drives & limits

A quick reference for what BootForge supports today and where the edges are.

Drives

• USB flash drives (pendrives) are the primary target and the most reliable.
• USB 3.x drives copy far faster than USB 2.0.
• External SSDs/HDDs can work, but BootForge warns when a device reports itself as a fixed disk — the same erase rules apply.
• Drives are accessed over USB OTG; through a hub, the drive is detected once you plug it into the hub (you may grant access twice).
• Very small drives may be refused for a safe Ventoy layout — BootForge tells you instead of producing an unbootable drive.

Filesystem

The data partition is formatted as exFAT, which supports the large (4 GB+) ISO files modern operating systems ship as, and is widely compatible.

Partition styles

Both MBR (default, maximum compatibility) and GPT are supported and proven to boot real PCs. See Advanced setup options.

Image types Ventoy boots

Ventoy lists boot entries by file type: ISO, WIM, IMG, VHD, VHDX, EFI (and Ventoy’s own VTOY/VLNK). Files of other types still copy to the drive but won’t appear in the boot menu — BootForge flags those. .zip/.gz archives are unpacked automatically on import and download.

Secure Boot

Whether a drive and a given ISO boot with Secure Boot enabled depends on firmware and the ISO’s own signing — see Troubleshooting for enrolling the loader or turning Secure Boot off.

Platform

• Android 10 or newer, with USB OTG.
• No root required, and no broad storage permissions.

Things to keep in mind

• Booting from USB is slower than from an internal disk — normal.
• Power-hungry drives may need a powered hub or a different OTG adapter.
• Always verify checksums for images you download outside the app.