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Release Notes for Ext2Fsd V0.50
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Features implemented and bugfix from V0.48:
1, Ext4 extent readonly support by Bo Branten. Writing is
possible but with no size-extending
2, Ext3 directory index (hash-tree) support
3, Fast fsck (uninit_bg) and group block checksum support
4, Ext4 64k block size support
5, Symlink/special inodes open/read/deletion support
6, Buffer head implemented over cache pages
7, Memory allocation optimization for flexible-size inodes
8, Improve file deletion: don't grab global lock when deleting
9, FIXME: return zero-content for sparse file gaps
10, FIXME: check available spaces before blocks allocation
11, FIXME: refresh stale root dir content after journal replay
12, FIXME: incompatible dentry management for 64k block size
13, FIXME: don't do journal replay for devices set as readonly
14, FIXME: Win7 cmd.exe always reports file sizes as zero
15, FIXME: Win7 memory throttling issue calling CcPinRead
16, FIXME: Ext3Fsd Build issues (SLIST/div64 for Win2k, browser files)
17, FIXME: Compiling test failure (fastio doesn't update i_size)
18, FIXME: Possible Mcb memory leak for symbolic links
Supported Ext3/4 features by 0.50:
1, flexible inode size: > 128 bytes, up to block size
2, dir_index: htree directory index
3, filetype: extra file mode in dentry
4, large_file: > 4G files supported
5, sparse_super: super block backup in group descriptor
6, uninit_bg: fast fsck and group checksum
7, extent: reading, writing with no extending.
8, journal: only support replay for internal journal
Unsupported Ext3/4 features:
1, journal: log-based operations, external journal
2, extent: size truncating & expanding, file deletion
2, flex_bg: first metadata group
3, EA (extended attributes), ACL support
Features to be implemented in future:
1, EXT3/4 features support (extents, journal, flex_bg,)
2, Documents improvement: clear and elaborate
3, Performance improvement, code optimization
4, Automatic check & update of new versions
5, LVM support, e2fsprogs porting for Windows
Files descriptions:
Ext2Fsd-0.50.exe: setup wizard for Windows systems (Win2k, Winxp,
Vista, Win7, Server 2003, Server 2008/R2)
Ext2Fsd-0.50.7z: Batch setup package in 7-zip
Ext2Fsd-0.50.zip: Batch setup package in zip
Ext2Fsd-0.50.src.7z: Source codes of Ext3Fsd and Ext2Mgr in 7-zip
Ext2Fsd-0.50.src.zip: Source codes of Ext3Fsd and Ext2Mgr in zip

Download link:
http://sourceforge.net/projects/ext2fsd/files/Ext2fsd/0.50/

Files checksum:
C:\Works\Ext2fsd\0.50>sha1sum Ext2Fsd-0.50*
bec1b29452473a36dc99c163b7bedbc4bb53707d *Ext2Fsd-0.50.7z
51cd8b7362ca3b401d455e2338f2c9eb9f97ae30 *Ext2Fsd-0.50.exe
28f9f3456bfc104fb0773e26c26e8c2fc663663a *Ext2Fsd-0.50.src.7z
844bce05d203d81d53f69493ae4a5b11dfb73667 *Ext2Fsd-0.50.src.zip
747ed2f3eb22bf3f67fae7084f6c895f516e6058 *Ext2Fsd-0.50.zip
WARNINGS:
The driver may crash your system and ruin your data unexpectedly,
since there might be software conflicts and I could only test it
on some of the popular platforms. You should use it with care and
use it at your own risk!