Max to PS2 Converter: Does It Work?

If you have an old Max drive or memory card from a PS1 or PS2 and want to use it on a modern PC or PS2, the short answer is: a Max-to-PS2 converter isn’t a physical cable you can buy—it’s a software method that reads the Max format and writes it to a standard PS2 memory card. This article explains what the Max format is, how to convert saves between a Max drive and a PS2 memory card, and what tools you actually need.

Formula

The conversion itself doesn’t have a mathematical formula—it’s a file format translation. But if you’re also calculating how long a transfer takes, the relevant formula is:

Transfer time (seconds) = File size (MB) × 8 / Transfer rate (Mbps)

Where file size is in megabytes, transfer rate is in megabits per second (Mbps), and the factor of 8 converts bytes to bits. For a typical PS2 save of 1 MB over a USB 1.1 connection (about 1 Mbps effective), the transfer takes roughly 8 seconds.

Worked Example

Using the default values from the calculator block above (50 minutes, 10 km), the pace is:

1. Pace = 50 min / 10 km = 5 min/km
2. Speed = 10 km / (50/60) h = 12 km/h

The calculator outputs 5.00 min/km and 12.00 km/h. That’s the same result you’d get with the formula.

What Is the Max Format?

The Max name comes from Action Replay Max and Gameshark Max, two popular cheat devices for the PS2 that also allowed save file backup. They used a proprietary file format (often with a .max extension) to store game saves on a USB flash drive or a special memory card adapter. The Max format wraps the raw save data with a header that includes the game’s ID, the save’s internal name, and a checksum. Without that header, a standard PS2 memory card won’t recognize the file.

How the Conversion Works

Converting a Max save to a PS2 memory card involves three steps:

• Extract the raw data: Use a tool like mymc (a free PS2 memory card manager for PC) to open the .max file and extract the raw save file (usually a .psu or .ps2 file).
• Create a virtual memory card: In mymc, create a new .ps2 memory card image (8 MB is standard).
• Inject the save: Drag the extracted save into the virtual card and save the image. Then write that image to a physical PS2 memory card using a USB adapter (like a PS2 memory card reader for PC) or a homebrew tool on the PS2 itself.

Alternatively, if you have a Max drive (the official USB device), you can use the original Action Replay Max software on a PS2 to copy saves directly from the Max drive to a memory card—no PC needed.

Choosing the Right Tool

There are several ways to do the conversion, and the best one depends on what hardware you own:

• mymc + USB adapter: The most common method. You need a PS2 memory card reader/writer that plugs into a PC’s USB port. These adapters are cheap and widely available online. The software is free.
• Action Replay Max disc: If you have the original disc and a Max drive, you can transfer saves directly on the PS2. This is the simplest but requires the proprietary hardware.
• Free MCBoot (FMCB): A homebrew launcher that runs on a modded PS2. With FMCB, you can use a USB flash drive and a tool like PS2 Save Builder to convert and copy saves without a PC adapter.

All methods are safe for your saves as long as you back up your memory card first.

Common Problems and Fixes

Here are the most frequent issues people run into when converting Max saves:

• “Corrupted data” on the PS2: This usually means the save’s header doesn’t match the game’s region or ID. Make sure the .max file is for the same region (NTSC-U, PAL, etc.) as your game.
• The adapter isn’t recognized by Windows: Some cheap adapters need a driver. Try a different USB port, or use a Windows XP/7 virtual machine—many adapters only work with old drivers.
• The save is too large: PS2 memory cards are 8 MB, but some saves (like Final Fantasy XII) take over 1 MB. That’s fine, but you can only store a few of those. The Max format doesn’t compress saves; it just wraps them.
• The .max file is actually a .psu file: Some sites mislabel files. Check the extension—.psu is already a raw format that mymc can open directly, so you can skip the extraction step.

Comparison: Max vs. Standard PS2 Saves

The Max format is essentially a wrapper. The actual save data inside is identical to what the PS2 writes natively. The difference is the header and the fact that Max files are often compressed (using a simple LZ-style compression) to fit more saves on a USB stick. Standard PS2 memory card saves are raw, with a different header structure. When converting, you’re stripping the Max wrapper and re-adding a standard header.

In practice, this means a Max save is not directly compatible with a PS2 memory card—you must convert it. Conversely, a standard PS2 save can be converted to Max format for backup, but you lose the compression benefit.

Cost and Safety Considerations

The software is free, but you’ll likely need a USB memory card adapter, which costs around $10–$20. The Action Replay Max kit (if you can find it) costs more but includes the drive and disc. Safety-wise, the process is non-destructive if you use a virtual memory card image first. Always back up your existing memory card before writing anything. There’s no risk of bricking your PS2—you’re only writing to the memory card, not the console’s firmware.

Frequently Asked Questions

Can I convert a Max save without a PC?

Yes, if you have the Action Replay Max disc and a Max drive, you can transfer saves directly on the PS2. The disc has a menu that lets you copy from the Max drive to a memory card and vice versa. No PC is needed.

Why does my converted save show as corrupted?

This usually happens when the save’s region doesn’t match your game, or when the extraction step didn’t produce a proper raw file. Double-check the file’s region and try re-extracting with a different tool like PS2 Save Builder.

Is there a way to convert Max saves online?

Some websites offer online conversion, but they’re generally unreliable and may not handle the checksum correctly. It’s safer to use a local tool like mymc, which is well-tested and free.

Can I use a Max save on a PS3 or PS4?

No, PS3 and PS4 use completely different save formats and encryption. Max saves are only for PS1 and PS2. For PS3, you’d need a different backup method, and PS4 saves are tied to your account and cannot be transferred.

What if my Max file is compressed?

Most .max files are compressed. mymc automatically decompresses them when you open the file. If a tool doesn’t, you can decompress it manually using a utility like 7-Zip (though the compression is proprietary, so it may not work).

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in t | Finish time | min | 50 | 0
in d | Distance | km | 10 | 0
out pace | Average pace | min/km | t / d | 2
out speed | Average speed | km/h | d / (t / 60) | 2