Partition Setup using AmigaOS 4.0
Before you can install Linux, you must setup the various partitions that Linux requires. To do this you must use Media Toolbox which you will find in the SYS:Tools drawer, as shown below:

Defining the Linux Root Partition

Click in "Name" box, change the name to "Linux" and press <Enter>. (If you forget to press <Enter> the value will not be saved.) Then click on the "Automount" box to un-tick it (this only applies to the AmigaOS and you don't want it mounted because the AmigaOS doesn't understand the Linux filesystem), and click on the "Bootable" box to tick it. The next step is to position the cursor over the right-hand arrow of the green box, then click and drag it to the left until the size shown in the window at the top shows approximately the right size for the partition - each movement of the arrow may cause the size to jump in large chunks, but you can use the "-" and "+" buttons to the right of the "Higher cyl." box to fine tune the exact size that you require. The size depends on you, but for the Linux partition it should not be smaller than 1GB, and if you exclude any data files that you might want to save, the complete Woody install requires 7GB, and the complete Sarge install is even larger. In our example we have chosen 20GB, as shown below:

Defining the Linux Swap Partition

Defining a Linux User Partition
This step is not necessary, but you may want to setup a separate partition for data rather than using the Linux Root Partition - this can simplify recovering your system if for some reason the file tree becomes corrupted and fsck finds errors. The process is basically the same as defining the Linux partition but using a name of your choice. Don't forget to click on the "Automount" box to un-tick it, and leave the "Bootable" box un-ticked.

Check "Blocksize" and if necessary change it to 512. Similarly check "Buffers" and if necessary change it to 100. The default Filesystem Type is "Standard filesystem". Click on the Type item and change it to "Custom filesystem". The Standard filesystem types will become shaded, and the previously ghosted Identifier box will become active. Over-type the "Identifier" value with 4C4E5800 and press <Enter>. The box to the right of the Identifier value should now show LNX\00. If everything is correct, click on "Ok - accept changes". This will return you to the Partition setup screen where the new partition should be displayed in brown as for Linux.

Defining an AmigaOS/Linux Transfer Partition
If you have a requirement to exchange files between AmigaOS and Linux you will need to set up another partition which both can access. You can call this partition anything you like, but because you want it to appear on the AmigaOS side, it can be a good idea to give it the next DHx: name. Because you want this partition to be accessible from the AmigaOS you must leave the "Automount" box ticked, but leave the "Bootable" box un-ticked.

Check "Blocksize" and if necessary change it to 512. Similarly check "Buffers" and if necessary change it to 100. The default Filesystem Type is "Standard filesystem". Click on the Type item and change it to "Custom filesystem". The Standard filesystem types will become shaded, and the previously ghosted Identifier box will become active. Over-type the "Identifier" value with 444F5303 and press <Enter>. The box to the right of the Identifier value should now show DOS\03. If everything is correct, click on "Ok - accept changes". This will return you to the Partition setup screen where the new partition should be displayed in bright green.

Saving the Changes
Once you have decided that no more partitions are required, click on "Ok - accept changes".