I would go 5 and 15 with the larger portion going to X, unless you really need every single bit of memory, it couldn't hurt much to give 9 some more memory, in case the OS X partition corrupts. That extra room on the 9 partition could save you. Anyways, who cares about the partition, the important part is that you have a TiBook, hottest computer on earth.
With my 20MB TiBook, here's what I'd like to do (I have to find out how to back up stuff first, now):
<li>2-3GB partition for /System and /Library for OS X</li>
<li>300MB partition for a dedicated swap file</li>
<li>The rest for a minimal OS 9 install and all other Applications and such</li>
With this setup, you'd have to do some symbolic linking to point to the appropriate /Applications directory and such, so I wouldn't suggest you do this unless you're familiar with funky Unix things.
I wouldn't want to give OS 9 its own partition because I'd rather just stick it in some forgotten corner of an existing partition and not waste the space that comes from too many partitions. But that's just me.
Apparently SO-DIMM (laptop ram) comes in different heights and the TiBook needs the 1.5" sticks. The iBook needs 1.25" I think, but check the Apple support areas for How to Upgrade Your RAM to make sure you get the right stuff.
as a matter of fact i dont suggest any partition at all. macosx is very well able to handle the harddrive very efficiently and if you should ever really have to boot from another source than where you're macosx sits, just use the system cd. plus!
i furthermore suggest:
FORMAT your HD prior to installing macosx and do NOT install Mac OS 9. that's what i did. you will be prompted during the installation of x that no 9 system folder could be found, which is necessary for all the classic applications *which suck SO badly that you don't even WANNA use them* and that you can install it later on. but that's it.
i got my Powerbook in...uhm...march i believe...and of course had 9 on it and all my applications. but figured very quickly that classic simply stinks. and it got to the point where i DREADED the lil classic 9 icon to show up in my dock when it got launched by x. so! unless you really truly NEEEEEEED to use old applications that HAVE to run under classic. just do NOT install 9, work merely under x and wait for the carbon or even better cocoa versions to show up. might take a while, but that's the price you gotta pay for sitting on the edge of technology. bottom line:
suggestion from me:
1) do NOT install macos9
2) then do NOT partition your HD
3) if you HAVE to have 9, still dont part. the HD
may the god of enlightening wisdom and thunder strike you with a bolt,
me not MacOS user - coming from Linux, FreeBSD & Solaris background. personal opinion: strongly recommond the creation of a "user home directories" partition, apart from wherever you install everything else as this is dead handy for back ups, OS upgrades/re-installs and can help in data recovery in case of biggish filesystem crashes (especially if you keep a copy of the partition boot records elsewhere).
For the cheapest and good qualilty memory look at www.memoryx.com They make there own memory for Mac, Sun Sparc Station, cisco routers, compaq, hp, ibm unix servers.
I have 128 in my wifes ibook, and 256 in my cube. I bought lots of memory from these guy, never a hick up, fast shipping. I have even purchase sun processor used, they all worked great and are supported.