Install FHDB on a Fat PS2 Internal Hard Drive
FHDB, short for Free Harddisk Drive Boot, is FreeMCBoot installed on a Fat PS2’s internal hard drive instead of on a memory card. Once it is set up, the console boots into the custom menu from the drive, without needing a memory card for the launcher itself. In short, if you have a Fat PS2, a network adapter, and an internal drive, FHDB lets you keep the launcher on the drive and keep both memory card slots free for saves. This guide explains what FHDB is, what hardware it needs, and how to install it without confusing it with a memory card install.
The direct answer
FHDB is only for Fat PS2 consoles that can take an internal hard drive through the network adapter bay. You install it with the FreeMCBoot installer, choosing the hard drive install option, and the finished drive boots the console into the FreeMCBoot menu. Slim consoles cannot use FHDB, because they have no internal drive bay, and late Slims are a separate topic covered in FunTuna and Fortuna for Late PS2 Slim SCPH-9000x. If you have a Fat console and want the launcher on the drive rather than on a card, FHDB is the right tool; if you have a Slim, use a memory card install from How to Install FreeMCBoot 1.966 on PS2: Complete Guide.
What you need
| Item | Notes |
|---|---|
| A Fat PS2 console | Slim consoles have no internal drive bay and cannot use FHDB |
| A PS2 network adapter | The original adapter, or a compatible SATA adapter version, to connect the drive |
| An internal hard drive | A compatible 3.5-inch IDE drive for an original adapter, or a SATA drive with a SATA adapter |
| A way to run the installer once | An existing FreeMCBoot card, another entry point, or a PC adapter method |
| The FMCB 1.966 installer files | From the download page |
| A USB drive, if your entry point needs one | For carrying installer files to the console |
For hardware, the network adapter is the part people most often get wrong, because original IDE adapters and later SATA adapters use different drive types. Match the drive to the adapter you actually have, and do not assume a SATA drive fits an unmodified original adapter. A compatible network adapter can be found through this network adapter link or, for used original hardware, through this used adapter link, and a suitable internal drive through this hard drive link. Check the adapter type first, then buy the drive to match it, not the other way round.
Drive size: the limit you should know before buying
FHDB supports drives up to 2TB, but there is a caveat that matters when buying. If the HDD OSD software on the drive has not had its ATAD module replaced, it may only support up to about 137GB, even on a larger drive. In practice, that means a very large drive is not automatically fully usable, and the usable size depends on the HDD OSD setup, not just on the drive label. Do not buy the largest drive available on the assumption that all of it will be usable in every setup. A moderate drive that matches your adapter and your actual library of your own dumps is usually the better purchase, and you can check how much space the system reports after installation before adding more content.
Step 1: Prepare the drive and adapter
Fit the drive to the network adapter, then fit the adapter to the back of the Fat console, following the adapter’s own fitting instructions. Make sure the drive is seated firmly and the adapter is fully inserted, because a loose adapter produces exactly the kind of intermittent boot failure that looks like a software problem. If the drive is new or previously used for something else, expect it to be prepared or formatted as part of the FHDB process, and do not put data on it that you cannot afford to lose. Back up anything on the drive elsewhere before you start, and keep your game saves on memory cards, since FHDB does not replace save storage.
Step 2: Run the installer and choose the hard drive install
Boot the console through your existing entry point and launch the FreeMCBoot installer. In the installer, choose the hard drive install option rather than the memory card install option. This is the step where a memory card install and an FHDB install diverge, and choosing the wrong target is the most common beginner mistake in this guide. Follow the installer’s screens for the drive target, and do not switch the console off or remove the adapter while the installer is writing. When the installer reports success, exit it cleanly.
If you do not yet have any entry point, build a memory card install first using How to Install FreeMCBoot 1.966 on PS2: Complete Guide, Install FreeMCBoot with FreeDVDBoot (No Modchip), or Install FreeMCBoot from a PC with a PS3MCA Memory Card Adapter, then use that card to run the installer for the hard drive. There is no shortcut that lets a completely stock console install FHDB with no entry point at all.
Step 3: Test booting from the drive
Restart the console with the drive and adapter connected and no FreeMCBoot card inserted, if you want to confirm that the drive itself is doing the booting. A successful FHDB install shows the custom menu on boot from the drive. If the console boots normally instead, check that the adapter is fully seated, that the drive is recognised, and that the installer really completed the hard drive install rather than a card install. If the menu appears only when a FreeMCBoot card is also inserted, the drive install probably did not complete, and you should rerun the installer and check the target selection carefully.
Step 4: Add applications and set up game loading
As with a card install, the standard package adds no applications, so the next step is to add Open PS2 Loader and any other programs you want, following Open PS2 Loader Setup: USB, SMB, and HDD Modes. With FHDB, the hard drive mode of Open PS2 Loader is the natural fit, since the drive is already inside the console, but USB and network modes remain available if you prefer them. Keep your own dumps organised on the drive, and remember that FHDB on its own does not supply games, does not add import-game support, and does not bypass hardware limits on copied discs. Use only your own dumps and backups.
Frequently asked questions
Can I use FHDB on a Slim PS2?
No. Slim consoles have no internal hard drive bay, so FHDB is a Fat-only option. Slim users should use a memory card install, or Fortuna or FunTuna on late Slims.
Do I still need a memory card with FHDB?
Not for booting, but memory cards are still where game saves live, and keeping a FreeMCBoot card as a recovery route is good practice.
Does FHDB include Open PS2 Loader?
No. The standard package contains only FreeMCBoot’s own files. Open PS2 Loader and other applications are added separately after installation.
What is the largest drive I can use?
FHDB supports drives up to 2TB, but if the HDD OSD ATAD module has not been replaced, usable size may be limited to about 137GB. Check what your setup reports after installation.
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