Experience Sharing Windows Command Line Linux GUI -- GTK/QT Linux GUI -- WebUI Secondary boot menu Browse/Boot Files In Local Disk Boot Ventoy Vlnk File About Secure Boot IA32 UEFI Support ARM64 UEFI Support MIPS64 UEFI Support Ventoy Search Configuration About WIMBOOT Mode About GRUB2 Mode When Ventoy2Disk.exe Failed To Install When Ventoy2Disk.exe Failed To Update About the Github CI release About FydeOS/CloudReady Inject files to Linux Live OS Replace ISO boot menu background About VentoyAutoRun.bat About file checksum Non-destructive Installation About USB hardware problem Special identifier in ISO name Delete Ventoy Secure Boot Key Ventoy Menu Multi-Language Ventoy Ctrl Settings Menu Ventoy Linux Remount How Ventoy works Ventoy Composition Disk Layout In MBR Disk Layout In GPT Ventoy MBR & GPT About Legacy BIOS Limitation About Fuzzy Screen for WinPE

Plugin Entrypoint Multi-Mode Option About Path Matching Global Control Plugin Image List Plugin Menu Class Plugin Menu Alias Plugin Menu Tip Plugin Menu Extension Plugin Auto Installation Plugin Injection Plugin Persistence Plugin Windows Vhdboot Plugin Linux vDisk boot Plugin Auto Memdisk Plugin Boot Conf Replace Plugin Driver Update Disk Plugin Password Plugin Ventoy Compatible Ventoy information format How information passed to OS How to mount the iso file How to mark as Ventoy Compatible Ventoy Disk Layout In GPT Since Ventoy-1.0.15, you can install Ventoy with GPT partition style. (Windows: Option--->Partition Style , Linux: -g option) Bellow is a 32GB USB drive's layout after install Ventoy in it. You can see that the whole disk was divided into 2 partitions in GPT format. By default, Ventoy select exFAT filesystem for the main partition to hold iso files. exFAT has better compatibility on Windows/Linux/Mac and exFAT is suitable for USB stick. You can reformat the 1st partition with other filesystem, now exFAT/FAT32/NTFS/UDF/XFS/Ext2/Ext3/Ext4 are supported. It should be noted that, if you choose XFS/Ext2/Ext3/Ext4, the USB will be unavaliable on Windows and can not be used to install Windows. But if you only use Linux that will be a good choice, because XFS/Ext2/Ext3/Ext4 will have better performance in Linux. There must be an EFI System Partition with FAT filesystem and that's the mandatory requirements of UEFI specifications. So this partition is created to hold EFI boot file and other files nesscessy to Ventoy. These files are very small, so 32MB is enough. Besides, the EFI partition can be at part1 also, but I set it at part2 just because that in some version of Windows like Windows 7, only the first partition of the USB drive is visable to the system. And that's good for Ventoy's protection. This partition is very small and used by ventoy, so you better not change anything in this partition. About First 1MB Space As for GPT format, there is a protect MBR in the 1st sector (LBA0), and then from LBA1 ~ LBA33 is the GPT partition head and partition table. LBA34 ~ LBA2047 is used to store legacy bios bootloader of Ventoy (same with MBR format). Reserved Disk Space You can preserve some space at the bottom of the disk. This is a 32GB USB drive's layout after install Ventoy in it (with 2GB reserved space). When install Ventoy, you can enable and set the reserved space with "Option" ---> "Partition Configuration" (Windows) or "-r" option (Linux). The reserved space configuration is only for installation process. The reserved space must at the bottom of the disk Ventoy MUST use Part1 and Part2, don't change their position and size. You can create Part3, Part4, Part5 ... with the reserved space and use them as you want.