Just remember to go from rdisk1s1 to rdisk1s2 to rdisk1s3 every time you use the Terminal code to format a volume. (Follow his step seven as an example of how to do that. So in a nutshell, just format all the partitions (however many you choose) to FAT32 when doing the Terminal code stuff. Another thing to note is that the order of your partitions established in step one determine the order the partitions will be mounting when connecting your external hard drive to your computer. Once it's all working, go back and use OS X's Disk Utility to reformat one of the FAT32 partitions to HFS+ (or extended journaled, if you prefer). You can avoid the annoyance noted in step number nine (doesn't automatically mount the HFS+ partition) if you just format all three partitions (or two if you're not adding NTFS) to FAT32 first (since those automatically mount so great). Here's my real contribution to improving the method in the previous hint. (Control Panel » Administration Tools » Computer Management » Disk Management.)

Finally, use a Windows machine to reformat the remaining VOLUME you formatted to FAT32 to NTFS instead. Then, after step seven in the first hint, insert a similar-looking step - put 2s3 at end of command instead. To add NTFS to the mix from the previous hint, in the first step, just divide things up into three parts instead of two.

If needed, print this hint, and then go to the above link for more help (and there's another link further down that may be of some help). In this hint, I'll explain how to add NTFS to the mix, and note some significant improvements upon the previous hint's awesome efforts. This hint (from way back in 2003) is still the best I have come across in terms of explaining how to partition HFS+ and FAT32 on the same external hard drive.

Format drive to ntfs on mac