Ventoid

Ventoid turns an Android phone into a practical Ventoy-style USB writer. Plug in a drive over OTG, pick the target device, and build a bootable Ventoy layout without needing a laptop in the middle.

• OTG-first workflow for rescue kits and field setup
• Direct USB mass-storage writing from Android
• Ventoy-style disk layout with data and EFI partitions
• Clear stage-based install flow for MBR, CORE, DATA, and EFI
• No ads, no analytics, no network dependency

한국어

Ventoid는 안드로이드 폰에서 바로 Ventoy 스타일 USB를 만드는 앱입니다. PC가 없거나, 폰 하나로 복구 USB를 준비해야 할 때 쓰기 좋게 설계했습니다.

이런 때 잘 맞습니다

• OTG 젠더로 USB를 바로 구워야 할 때
• 외부 PC 없이 현장에서 설치 USB를 준비해야 할 때
• 부팅용 USB를 자주 새로 만드는 작업 흐름이 필요할 때

핵심 기능

• 연결된 USB 저장장치 감지
• Android USB 권한 요청 및 접근
• Ventoy 호환 디스크 레이아웃 작성
• core.img와 EFI 이미지 기록
• 데이터 파티션 exFAT 포맷
• 단계별 진행 상태와 로컬 로그 표시

프로젝트 정보

• 패키지: com.ventoid.app
• 모듈: app
• 최소 SDK: 21
• 타깃 SDK: 35
• 라이선스: GPL-3.0-or-later

주요 소스

• app/src/main/java/com/ventoid/app/MainActivity.kt
• app/src/main/java/com/ventoid/app/install/VentoyInstallCoordinator.kt
• app/src/main/java/com/ventoid/app/installer/VentoyInstaller.kt
• app/src/main/java/com/ventoid/app/installer/ExFatFormatter.kt
• app/src/main/java/com/ventoid/app/usb/UsbMassStorageHelper.kt

번들 자산

• app/src/main/assets/boot/boot.img
• app/src/main/assets/boot/core.img
• app/src/main/assets/ventoy/ventoy.disk.img

테스트

./gradlew :app:testDebugUnitTest

English

Ventoid is an Android app for creating Ventoy-style USB drives directly from a phone. It is built for OTG workflows, repair kits, and the very real moment when your phone is the only machine you have on hand.

Why people use it

• Prepare a bootable USB without a PC
• Rebuild install media in the field
• Keep a cleaner, phone-first workflow for rescue drives

Core features

• Detect attached USB mass-storage devices
• Request Android USB permission only when needed
• Write a Ventoy-compatible disk layout
• Write core.img and the EFI image
• Format the data partition as exFAT
• Show stage-based progress and a local write log

Project info

• package: com.ventoid.app
• module: app
• min SDK: 21
• target SDK: 35
• license: GPL-3.0-or-later

Key source files

• app/src/main/java/com/ventoid/app/MainActivity.kt
• app/src/main/java/com/ventoid/app/install/VentoyInstallCoordinator.kt
• app/src/main/java/com/ventoid/app/installer/VentoyInstaller.kt
• app/src/main/java/com/ventoid/app/installer/ExFatFormatter.kt
• app/src/main/java/com/ventoid/app/usb/UsbMassStorageHelper.kt

Bundled assets

• app/src/main/assets/boot/boot.img
• app/src/main/assets/boot/core.img
• app/src/main/assets/ventoy/ventoy.disk.img

Test

./gradlew :app:testDebugUnitTest

中文

Ventoid 是一款面向 Android 的 USB 启动盘写入工具。只要手机支持 OTG，就可以直接把 U 盘写成 Ventoy 风格的启动盘，不用再临时找电脑救场。

适合哪些场景

• 手边只有手机，需要马上做启动盘
• 维护、装机、救援时需要随时重做 USB
• 想把制作启动盘这件事变成更轻便的移动流程

主要功能

• 检测已连接的 USB 存储设备
• 按需申请 Android USB 访问权限
• 写入兼容 Ventoy 的磁盘布局
• 写入 core.img 和 EFI 镜像
• 将数据分区格式化为 exFAT
• 用分阶段界面显示进度和本地日志

项目信息

• 包名：com.ventoid.app
• 模块：app
• 最低 SDK：21
• 目标 SDK：35
• 许可证：GPL-3.0-or-later

关键源码

• app/src/main/java/com/ventoid/app/MainActivity.kt
• app/src/main/java/com/ventoid/app/install/VentoyInstallCoordinator.kt
• app/src/main/java/com/ventoid/app/installer/VentoyInstaller.kt
• app/src/main/java/com/ventoid/app/installer/ExFatFormatter.kt
• app/src/main/java/com/ventoid/app/usb/UsbMassStorageHelper.kt

随包资源

• app/src/main/assets/boot/boot.img
• app/src/main/assets/boot/core.img
• app/src/main/assets/ventoy/ventoy.disk.img

测试

./gradlew :app:testDebugUnitTest