Ext2Fsd Project

Open source ext3/4 file system driver for Windows (2K/XP/WIN7/WIN8)

Ext2Fsd 0.63 was released !

with 15 comments

Features implemented or bugfix since V0.62:

     1, Symlink (ReparsePoint) support implemented by ngkaho1234. See his
        repository for more details: http://github.com/ngkaho1234/Ext3Fsd.git
     2, Hard links support implemented
     3, Win10 TH2 drive letter assignment supported
     4, Case-insensitive-search supported (caused by dentry hash)
     5, Peformance improvements for metadata operations

 Bugs fixed:
     1, BSOD when trying to format or dismount EXT4 volumes
     2, invalid extent content for newly created inodes
     3, Possible data corruption (zero data) under high pressure (WDK building)
     4, Splash screen of Ext2Mgr removed
Supported Ext3/4 features by 0.63:
    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:       full support with extending and shrinking.
    8, journal:      only support replay for internal journal
    9, flex_bg:      first flexible metadata group
 ย 10, symlink and hardlink
Unsupported Ext3/4 features:
    1, journal: log-based operations, external journal
    2, EA (extended attributes), ACL support
Features to be implemented in next release:
ย   1, mounted as given user: privilege checking with given uid & gid
ย   2, EA and ACL security checking
Files descriptions:
Ext2Fsd-0.63.exe:       setup wizard for Windows systems (Win2k, Winxp,
                        Vista, Win7, Win8, Server 2003, Server 2008/R2)
Ext2Fsd-0.63.7z:        Batch setup package in 7-zip
Ext2Fsd-0.63.zip:       Batch setup package in zip

Download link:
Files checksum:
C:\Works\Ext2fsd\0.63>sha1sum Ext2Fsd-0.63*
fba65fdaa84a798390abb90c997a80417aeacfce *Ext2Fsd-0.63.7z
e4f6971c67d7307dd2aa6793dcefaba1b30c847e *Ext2Fsd-0.63.exe
55cced23064ed60bd54749bf14c2bf3db5c42968 *Ext2Fsd-0.63.zip
    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!
Matt <mattwu@163.com>

Written by Matt

March 13th, 2016 at 6:50 pm

Posted in Ext2Fsd,News

Tagged with ,

15 Responses to 'Ext2Fsd 0.63 was released !'

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  1. Thanks for the update ! ๐Ÿ™‚

    Unfortunatly, ext2fsd won’t work with USB 3 to Sata III adapter… He give me “Raw” disk.


    13 Mar 16 at 9:22 pm

  2. Ext2Mgr treats all GPT-typed partitions as RAW. But it won’t affect mounting,

    Could Windows disk management (diskmgmt.msc) recognize your disk ?


    14 Mar 16 at 10:11 am

  3. The reference of product is “Asmedia ASMT 2115 USB USB 3 to SATA”



    14 Mar 16 at 1:42 am

  4. Win7 x64

    0.62 worked great. I updated to 0.63, plugged in my external 1TB hdd that’s in ext3 format, and the drive doesn’t mount. Ent2 volume manager showed it was mounted, but did it didn’t show up in My Computer.

    Uninstalled, rebooted, did a fresh install of 0.63, still not working. Unistalled, rebooted, installed 0.62 and it worked again.


    15 Mar 16 at 10:50 am

  5. Very similar thing happened to me.

    Win7 x64
    Monoprice USB 3.0 to SATA Converter Cable
    1TB external in EXT4 format that I’ve used with earlier versions of ext2sd and different win7 machine.

    New win7 machine, loaded 0.63 and the drive shows up in the partition manager, but no access from Windows.

    Uninstall 0.63 and install 0.62. Drive shows up and is accessible.

    Other than this odd issue, I can’t give the author enough thanks for all the time this application has saved me trying to share drives between Win and Linux machines!


    20 Mar 16 at 9:19 am

  6. You may need to start the driver at the Ext2 Mount Manager’s setting page manually. However you can start the driver automatically during boot time.

    Kaho Ng

    23 Mar 16 at 5:39 pm

  7. I explain it further.

    The setting page can be found at Tools->Service Management.
    Set Service Startup Mode to SERVICE_SYSTEM_START or SERVICE_BOOT_START, and then start the service. After following these steps you should get the drive working again.
    If you forget to set Service Startup Mode to the listed option above, you will need to start the driver again manually after reboot.

    Kaho Ng

    23 Mar 16 at 5:54 pm

  8. I am having problems getting this application to run. I launch it, but nothing happens. Running Windows 10. Any ideas what could be wrong?


    18 Mar 16 at 11:31 pm

  9. you need to start the “Webclient” service if you want to be able to execute files by double clicking


    20 Mar 16 at 3:48 am

  10. Ignore the other reply. Are you using admin rights?


    20 Mar 16 at 3:49 am

  11. Thak you for this update!!!


    20 Mar 16 at 3:46 am

  12. Hello guys,

    I mounted it by using Ext2 Volume Manager. and the Letter is F.

    But I can not find a value F in “My conputer”. as well as “Windows Task Manager”.

    **But**, after I clicked the “Show processes from all users” button, and click “File”->”New Task(Run…)”->”Browse”. boom, I can see the driver F.

    My computer OS is Windows 7 Enterprise x64, with UAC enable.
    So I think โ€”โ€”that UAC stuff may cause this issue happen. With UAC enable, explorer.exe process run as a normal user. and a normal user’s programs just can’t access the driver F, until the program have administrator’s power .

    Best Regards,
    Weiqi Chen.

    Weiqi Chen

    27 Mar 16 at 12:08 pm

  13. thanks, but there is a little problem,

    with previous release was all ok, but now it go into conflict with romex Primo Ramdisk

    Now don’t mount automatically hd ext3, and when i open Ext2 Volume Manager all virtual hard disk created with romex go down and they disappear

    help ๐Ÿ™


    3 Apr 16 at 5:36 pm

  14. Fixed in version 0.64


    4 Apr 16 at 2:45 pm

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    4 Mar 17 at 10:42 am

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