FATXplorer 3.0 beta 4 – write support and a new level of performance

The moment everyone has been waiting for has finally arrived: full read/write support for original Xbox devices! With FATXplorer 3.0 beta 4, you can mount any partition on your original Xbox HDD or MU and explore it like you would as if you plugged in an external USB drive.

It has taken a while to get here, but as you will soon see by the performance comparisons below, it was worth the wait!

Performance Comparisons

Since FATXplorer v2.5 doesn’t support original Xbox, we’ll be using drives that are formatted with an Xbox 360 Content Partition. You can expect the same performance between original Xbox and Xbox 360. Two WD Black-series HDDs will be used, connected to a desktop PC via direct SATA III connection:

  1. WD Black 3.5″ 7200rpm HDD, Model WD2003FZEX (2 TB)
  2. WD Black 2.5″ 7200rpm HDD, Model WD5000LPLX (500 GB)

2020 Warning: There are reports that some WD5000LPLX drives do not get flashed properly by HDDHakr, resulting in the drive not working in Xbox 360 consoles. The drive used in this test, which works fine, was manufactured August 16, 2018. If you intend to purchase this drive for use in an Xbox 360, make sure you check your retailer’s return policy.

Here are the relevant specs of the PC these test were run on:

CPUIntel® Core™ i7-6700K
StorageSamsung SSD 970 EVO Plus 1TB (NVMe SSD)
RAM16 GB DDR4 @ 3333 MHz

Your PC specs combined with your Xbox disk specs may result in different performance than what is shown below.

Each test was performed at least twice to verify performance consistency. The copies and deletions are done on a mounted Content Partition using Explorer.

Device Loading

The larger the partition and the smaller the cluster size, the longer it takes for FATXplorer to load it. Improvements made in v3.0 have reduced the loading time for the largest disks and partitions to just a few seconds. For this test, we will be using the 3.5″ 2 TB HDD (the performance gap isn’t as noticeable with 500 GB), and the cluster size was reduced to 8K (all tests after this use the default 16K cluster size).

Many Small Files

Several customers expressed frustration in the past in regard to v2.5’s performance when it came to copying many small files. Improving performance here was a focal point during the redesign. After asking these customers to try out v3.0, they confirmed that it is indeed significantly faster. For this test, 4096 single-byte files were created and copied to the disk.

Next, let’s delete all those files:

That synthetic test looks great, but let’s test a real-world scenario. Mass Effect 3 has 4,005 files and is 10.5 GB in size. The large number of mixed-size files makes this game a great test case.

As you can see, in some cases the improvements to file copies in v3.0 can be measured in minutes, not seconds!

Deleting all those files looks like this:

Now let’s try a different game: Call of Duty: World at War. This is a 6.32 GB game with 16,732 files.

Just like with Mass Effect 3, the speed improvement can be as much as 2 minutes!

Deleting it:

FATXplorer v3.0 brings improvement in every area and performance may improve even more in the future!

Special Gift

As a token of appreciation to beta testers who are not already license-holders, download and try FATXplorer v3.0 beta before June 24, 2020 and you can find a $5 coupon in the status bar of the application (at the bottom). The license will work on v3.0 when it is officially released.

Beta information and download links

FATXplorer 3.0 beta now available!

FATXplorer 3.0 beta launches today and is available for download right now.

Emails will soon roll out to customers and those who have expressed interest.

Beta information and download links

Original Xbox support in action!

At long last, original Xbox support in FATXplorer is in a very usable state! Below is a video showcasing the mounting of my HDD image, and the mounting of a HDD image that has a custom partition table on it that someone generously provided. This is being done on a Windows 7 VM – even though Microsoft has recently ended support for it, it will still be a FATXplorer 3.0-supported OS.

Beta 1 is very near! Just a little more bug fixing is needed before emails go out to those who have shown interest in testing.

Updated backwards compatibility files

The backwards compatibility package hosted on the site has been updated with the latest April 2018 title update, and a few unnecessary files have been removed. Click to download – install instructions are included in the readme.

FATXplorer 3.0 – UI Sneak Peek

Work on the base UI for FATXplorer 3.0 has recently finished for the upcoming beta and should closely resemble what will eventually be released as the final product. The UI has been completely redone to give FATXplorer a more modern look and to work well with high resolution displays, while also offering modern features, such as a dark mode and scalable SVG icons.

Note that everything seen here is subject to change as development progresses, and based on feedback.

When you run FATXplorer, the first thing you will see is the new main window:

The icon is a placeholder and not the real one.

Let’s start at the top. You’ll notice a few buttons on the title bar at the top right.

The first one is the mode toggle. This lets you toggle between light and dark mode, and there is also an option to use the Windows setting. For Windows 10 1607 (Anniversary Update) and newer, FATXplorer will toggle light and dark mode automatically based on your Windows default app mode setting. Changes take effect in real-time, too! FATXplorer has been designed to work great with both modes and dark mode should be great for your late-night sessions. Here’s what it looks like:

All of the empty space you see will be used for the Toolkit, Content, and Recovery views.

The second button is the palette selector. You have 7 different color palettes to choose from that will change some FATXplorer UI elements to match that color. The default is a shade of green to reflect Xbox colors.

The last button is minimize to tray. This is already in 2.5 and works exactly the same. This is useful after mounting a device so you can remove FATXplorer from view to maximize screen real estate and to avoid the possibility of accidentally closing it and unmounting your device(s).

Now for the main menu. The old FATXplorer has used a ribbon throughout the 2.x series of releases. It has been replaced with bold, wide tiles to highlight key functions:


The devices tile menu, when clicked, shows all devices connected to your computer that have Xbox storage. You have all the familiar functions from 2.5 and some new ones:

Show Log – FATXplorer 2.5 technically features this, but it’s a hidden feature, and only outputs to a file. In 3.0, you can instantly see the complete device detection log. This is very valuable when your device isn’t showing up. It should give you some insight into any problems.

Load Special – This is for advanced cases and some recovery scenarios. It will let you configure the offset and length of the partition you are looking for, and it will override the default device scanning parameters to look for this specific partition on all devices being scanned. This feature is not done yet and will be implemented later.

Formatting Tools

Format a device to FATX specifications (both original Xbox and Xbox 360). This feature is not done yet and will be implemented later – will function similar to 2.5 formatting tools, but with the inclusion of original Xbox support + homebrew partition table.


Configure your settings. There aren’t really any settings at the moment, so this is a placeholder and a settings window will be implemented later.


A drop-down that contains a few shortcuts and options. When sending in a support request, you’ll want to create a support package to help support narrow down problems you are running into.

Device Interaction

Mounting a device works pretty much the same way as it does in 2.5, but the UI for doing so is completely new:

If you want to prevent any sort of write operation from happening, you can toggle Read-Only. In 2.5, there was a common question of “what are all these partitions for / what is in them?” Partitions are now listed with descriptions to help answer these questions.

The new Toolkit, Content, and Recovery views are not ready yet. Advanced Information is an option for HDDs that will obtain the output of smartmontools (a popular HDD SMART utility) and display it. This can be very useful if you suspect your HDD is dying and want a quick and easy way to check SMART values.

Finally, at the bottom of FATXplorer you’ll see the driver status. If the driver is not installed, you can click it to install it. It’ll also flash blue when there’s an update available for it. If you don’t click to install here, it’ll ask you right before you mount a device. There is also Show Log, which is a toggleable log window that’ll show you technical details about what is going on behind the scenes.

When can I try it?

Not much longer now! Work will now shift to getting drive mounting in a functional state. The next post on this site should be the beta announcement.😉

In the meantime, please feel free to share any feedback on the new UI in the comments below!

FATXplorer 3.0 – 2019 Progress Update

Hi everyone, it’s been a while since the last update, so I wanted to provide an update on where things are.

Original Xbox Support

The hype around this feature is real and it’s really cool how the OG Xbox scene has come back to life. It’s important to me that original Xbox support is as complete as possible because so many people have expressed interest in it. The partition layout was easy to figure out. The complexity came from the beginning sectors of the disk. There is a wealth of data: refurb information, manufacturing information, cache databases, XBL profile/machine information, and network configuration. After poking around quite a bit, I have mapped out basically 99% of it. It’s relatively undocumented data and I’ve found some things that may not have been discovered before. The plan is to provide some kind of viewer so everyone will be able to see this data. Some of you may find it quite interesting!

Partitions: Aside from being able to look at all of that disk data, 3.0 will have full support for all official Microsoft stock partitions, and also customizations by the homebrew community (the partition table, larger disks with F drive). You’ll also be able to format/customize your partitions.

Disk Unlocking: I have researched the possibility of adding a disk locker/unlocker and came to the conclusion that some IDE/SATA -> USB adapters do not support the ATA commands needed to carry out these operations. FATXplorer will not be able to unlock your disk if it is locked.


Driver: The current version of FATXplorer uses an older file system driver. It still works just fine, but doesn’t take full advantage of Windows 8 & 10 features. The new driver in 3.0 will have full compatibility with Windows 10, so if you’ve experienced any strange behavior with the current version, 3.0 should work better for you.

Requirements: 3.0 has a minimum requirement of Windows 7 SP1. It was originally going to be Windows 8, but Windows 7 is still quite popular, so some small concessions were made to make it work on Windows 7. XP and Vista support will not be available.

Licensing: 3.0 is a free upgrade to current license holders. You’ll still be able to use it on all PCs that you own. I am floating the possibility of creating a new licensing option: a “day pass” that will grant you full access to FATXplorer, for 1 day, at a low price. This may be useful to people who just need to use FATXplorer for something, like a disk content transfer, and don’t plan to use it again. This is just an idea for now, but if this is something you or a friend may like, please leave a comment voicing your support!

AF/4K Disks: 3.0 will have support for AF disks (AF means Advanced Format, not the expletive you may be thinking of😛). If you have an AF disk, you may see better read/write speeds compared to the current version of FATXplorer. Please note that Microsoft OEM disks are not AF, but if you’ve purchased a drive within the past few years, it probably is. (FATXplorer will tell you if your disk is AF.)

Old Code: Some of FATXplorer’s code is, believe it or not, 10 years old now! The reason the 3.0 update is taking longer than usual is because the project has essentially been restarted. This is not a bad thing – it will help make FATXplorer work well for the next 10 years! It comes at a good time with the developments Microsoft has done with .NET Core, particularly with integrating Windows UI frameworks into it.

New Recovery Features

These will come a bit later, but there will be a new feature to help find “lost” files, such as old game builds that are still on-disk, but separated from the directory tree. If you’re a preservationist and have some disks that may have interesting files on them, please reach out so I can add you to a list to try out new recovery features when they’re ready.


The website has been slow and, by 2019 standards, looks dated. A new website is coming. The plan is to keep all existing posts and comments. This may happen before 3.0 releases.


Thank you to those who continue to voice their support for FATXplorer and original Xbox support. I know the wait has been painful, but I think you will be pleased with what is coming.🙂


2018 Plans

Hello everyone,

It’s now 2018, and around 8 years since this website launched. It’s pretty amazing that every day, there are hundreds of people from all over the world visiting the site and downloading FATXplorer. Even though the Xbox 360 has basically been fully superseded by the Xbox One, interest in FATXplorer remains high. Even more interesting is the huge demand for original Xbox support.

This is just a quick post to clarify that FATXplorer is not dead. There haven’t been many updates recently simply because no significant issues have been reported. The current version is rock solid.

Original Xbox support is still coming. There is no set date, but there will be a beta. A lot of people are already on the list to be notified about it. If you want to be added, feel free to leave a comment below.

There is also a site refresh and server move in the works to bring it up to modern standards. A lot of elements on this site are very old and need to be refreshed. After that, it’ll basically be full speed ahead with FATXplorer v3 development. It’s taken longer than it should have, mostly due to real-life obligations, but I look forward to delivering another quality release. If you want to help out, send some original Xbox HDD dumps my way: https://fatxplorer.eaton-works.com/contact/

Thanks for reading and stay tuned for more updates!


Now Fully HTTPS

Hello everyone, a quick update for you: The site has just been updated to include full HTTPS support. It was previously only used on select pages, such as the contact form, but as the world continues to push towards a more secure Internet, it was time for FATXplorer to join in completely.

Advanced security features such as HSTS (with preloading) and HPKP will also be implemented very soon after careful testing. Update: Done

It will take a little while to go through all links and images to fully get rid of mixed content warnings, so some pages may not display the green lock, yet. If any pages on the site look broken because of this change, please report them in the comments below. Update: Mixed content warnings should be gone on all pages now.

Welcome to the new server!

Hello everyone, if you are reading this, you are viewing the website on the new server! It’s not actually a server though, FATXplorer now runs in a cluster environment (also known as “cloud hosting”). The same technology powering Microsoft’s Azure now powers FATXplorer. This is important for several reasons:

  • Downtime should be nonexistent. You may have noticed a lot of downtime over the past few months. This was not the fault of FATXplorer, but the declining quality in the previous host’s servers.
  • All of the latest technologies are available for development. The previous host wasn’t really keeping things up to date.
  • It costs less overall.

Just so you know, the initial downtime this past week was not caused by the server migration. Something happened on the previous host’s server and every time the host fixed the problem, a new one would appear. Things weren’t getting better, so the migration, initially scheduled for early summer, was executed immediately. Downtime wasn’t planned, but unfortunately, the unstable server on the previous host didn’t make things easy.

With the website now stable, work will soon resume on the FATXplorer v3.0 beta. Customers (and those who have shown interest) will be sent an email about the beta when it’s ready. It’ll be a major improvement over v2.5 and planning is underway for a website redesign to go with the v3.0 launch.


Thank you for reading. There may be sporadic downtime over the next few days while work is being done on parts of the site, but major downtime should be a thing of the past.

If you notice anything broken or something that looks off, please leave a comment on this post.

Lastly, Arvixe web hosting is no longer recommended.

Updates & 2016 Plans

Hello everyone, it’s been quiet lately so here’s an update! There’s several topics to cover:

1. Windows 10

You probably see the post below this warning about possible risks when using Windows Integration on Windows 10. There are now plenty of customers using FATXplorer on Windows 10, and no issues have been reported. You might run into small Explorer glitches, which will be fixed in the upcoming driver update, but it’s perfectly safe to use otherwise.

2. Web Host

Over the past few months there has been a noticeable increase in site slowness and errors. Recent investigation uncovered the hosting company that hosts this website was bought out by a rather evil corporation, and the quality of service has dropped dramatically. FATXplorer will be moving to a more reliable host in the beginning of 2016.

If you are curious about what happened, this summarizes the event nicely.

3. FATXplorer Update

Unfortunately there are some tech/workstation issues at the office right now, and work on the next update is temporarily suspended. The issues are still being worked out to ensure a quality update can be produced, and you can probably still expect it to come out early next year.

Special thanks to all the people who have requested to help with original Xbox drive support! You will be contacted when something is ready.


Merry Christmas to all!

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