There are 3 kinds of configuration, "Host", "Hardware" and "Configurations". The "Host" configuration covers only the host settings, the "Hardware" configuration covers only the hardware settings and the "Configurations" covers both "Host" and "Hardware" configurations. I'll explain the "Configuration" section since it covers all settings.

In the Properties dialog when you have setup everything to your liking,
1. In left pane, select "Configurations".
2. In right pane, select ".\Configurations\".
3. Enter the configuration name in the "Name" field (eg. My Default). Note that the name will be used as file name, so don't use invalid characters such as "*", "/", ":", etc.
4. OPTIONAL: Enter the configuration description in the "Description" field.
5. Press the "Save" button to save the configuration.

Configuration notes:
- Leave the "Link" field blank and the "Ignore Link" unchecked. I don't now what they're for, so leave it as default.
- The "Additional Information" section allows you to add supplemental file for the configuration. This can be any file (eg. document, picture, program, etc.). When you specify the file via the "Set" button, the "View" button will open the file according to Windows file association. For example, if you use a TXT file it will be opened by Notepad, a DOC file will be opened by MS Word, an AVI file will be opened by Media Player, and so on.
- The "Load" button will load selected configuration.
- The "Load From..." button will add/replace configuration file into the list and load it.
- The "Save As..." button will add/replace current configuration into the list including the corresponding file.
- The "Delete" button will remove selected configuration and delete the corresponding file.
- Double-clicking a configuration from the list will load it and immediately starts the emulation.

Other notes:
- In "Floppy drives" section, try setting "Floppy Drive Emulation Speed" to 800% or 100% for better compatibility.
- According to the Amiga hardware specs, the internal HDD controller can handle up to 4GB capacity. The limit can only be broken via hardware expansion card. The original A4000 comes with a 120MB HDD. See here for details. Still, I can't find the specs regarding HDD maximum cylinder, surfaces and sectors per cylinder.

Uh, thanks, but how do I solve that annoying error?

Did the OS installation finished without error?

Try booting from the "Install" disk rather than "Boot" disk when installing.

jaelanicu wrote:

Did the OS installation finished without error? Try booting from the "Install" disk rather than "Boot" disk when installing.

Wha? There's no OS installed on it. It's a fresh A4000. If I click "Cancel" on that "This is not a DOS drive, gtfo" message about 100 times it brings me to AmigaDOS. From there if I type anything in it tells me to insert a drive into C or something like that. I can't really remember.

Some forums reported that the "Boot" (officially named "Workbench") floppy is actually the second disk and the "Install" floppy is the first disk. In older OS version, the "Workbench" is bootable but not in the 3.1 version. Some users reported that booting via the "Install" disk is the proper way for installing the OS.

I was curious because of this thread. A while ago, I dig up my CD archives for testing with the latest WinUAE. I try to match the configuration with yours, prepared the HDD, format it, installed the OS then restart the emulation. All things are working well like it did several years ago. Booting using the "Workbench" floppy DOES make the HDD to be temporarily unrecognizeable, but it was solved by booting using the "Install" floppy.

I just tried that, it still gives me Not a DOS disk error. I really think it's the HDD I made.
Does ANYONE know the specs regarding HDD maximum cylinder, surfaces and sectors per cylinder for a 120MB drive?

It should work for 504MB HDD with the configuration as shown in your screenshot. I've tested it and it works.

Please take a look at all of the Workbench floppy image files. Inspect their modification dates. If any of them has been set to recent date+time, I suspect it has been modified and probably corrupted (because of OS install into the floppy itself). Try getting a fresh floppy image and make backups.

Nevermind, I FINALLY got it installed! Now what do I do?

Also, is there a (hopefully) way to put in a network expansion card or something like that?

Edit: Whenver I "insert" a "floppy" I get this:


I can't open them, edit them, do anything with them. Why??

While the disk are detected, their file system are not and labeled as NDOS (Non-DOS). They could be either blank disks or corrupted disks.

If you're sure that the disks are not newly created ones, then they are corrupted (in any way) and no longer usable.

jaelanicu wrote:

While the disk are detected, their file system are not and labeled as NDOS (Non-DOS). They could be either blank disks or corrupted disks. If you're sure that the disks are not newly created ones, then they are corrupted (in any way) and no longer usable.

It happens with every disk I put in, new or old.