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Ext2Fsd (short for Ext2 File System Driver) is a free Installable File System driver written in C for the Microsoft Windows operating system family. It facilitates read and write access to the ext2, ext3 and ext4 file systems.

The driver can be installed on Windows 2000, Windows XP, Windows Server 2003, Windows Vista, Windows 7, Windows 8,[3] Windows 10, Windows Server 2008, Windows Server 2008 R2.[1] Support for Windows NT was dropped in version 0.30.[4]

The program Ext2Mgr can optionally be installed additionally to manage drive letters and such.

Contents

Features

Feature matrix

Read Write Journal dir_index

ext2

N/A N/A

ext3

Limited

ext4

Limited

Supported Ext3/4 features[1]

• flexible inode size: > 128 bytes, up to block size
• dir_index: htree directory index
• filetype: extra file mode in dentry
• large_file: > 4G files supported
• sparse_super: super block backup in group descriptor
• uninit_bg: fast fsck and group checksum
• extent: full support with extending and shrinking.
• journal: only support replay for internal journal
• flex_bg: first flexible metadata group
• symlink and hardlink
• Mount-as-user: specified uid/gid supported

Unsupported Ext3/4 features

Features to be implemented in future

• Extents management improvement
• EA and ACL security checking

See also

References

‏Source en.wikipedia.org