always ready for efficient caching etc...Unless you have a special reason, there is no point in partitioning. And, sure, there are reasons to have such. What are yours exactly? ... If, say, it is to have a part that is easily wiped and defragged and
Yep, that sounds good, even something like what I originally had in mind (there also floated around in my synapses a notion that it would be "good" somehow to have like-with-like: all word processing and related software and files in one place; everything connected to music and audio more generally together, etc.).
If you want to operate different OSs like 8.6, 9.1 etc then this would be a good reason and then
the question of having to put an OS on each would answer itself.
Who me? ... I have a hard enough time handling one OS, my trusty OS 9.2.2 hijacked onto my old contraption with the aid of OS9 Helper.
(T)here was a very nice account of Hard Disks - may have been written by Peter Norton. I will see if there is an online version in the help files on another computer I have. It was a beauty and I
recommend it.
My mouth is watering. That would be much appreciated.
In general, you do not need an OS on a volume (think HD, virtual or otherwise) if you don't need to start from it.
I thought as much ... left the huge leftover space (all of about 100 GB) following my regular partitions, which I'd labelled "Scratch" to be fancy, with no OS on it. What led to multiple OS 9.2.2 installations was my discovery that some *multiple* installations of applications (such as Stuffit Deluxe) and I think stuff like AppleWorks installed off by *itself* in a separate volume, would only work where there was an accompanying OS. What is the moral of this story? Don't mess with mother nature and her apps. OS and applications go together like bread and butter.
Ahh, no!! I thought I was making progress! Then you had to go on to write ...
Once you are booted up and all the volumes are mounted or recognised by the OS, any app on any disk should load into memory and fire up as long as any of its special needs are met: eg. it may need an extension which needs to have been loaded at start up on the start up disk. So it is no use having a set of extensions on the start up disk that is not appropriate to the app concerned. In general! I would not be surprised if some apps need to be on the start up disk even though this is not fathomable from first principles - I have discovered that all things happen in this world somewhere. Aliases of things on the start up should work fine in this context.
I don't think, in my current chastened state, that I'll even enter this thicket. BUT, do I get you right, that I can put something like iTunes on its own (non-OS partition) and it should work from my one startup volume as long as I get ahold of some/all of iTunes extensions and put their aliases in my main startup file?
In general, if there is a facility in any particular software for you to assign a scratch disk or cache in disk space, you can choose whatever volume (think HD, (partitioned creation or not) you like. In fact, Photoshop used to recommend you assign a whole volume for the scratch for efficient operation - a guaranteed nice clean empty defragged block ...
Yeh, but try to find such a facility :-). I just did a little experiment with my Eudora, Internet Explorer, and Netscape stuff-- since they're likely to generate a bunch of useless caches of various types--and, except for Eudora whose preferences allow you only to specify a location for its "Attachments" folder, there was no way I could find to move any of their junk files into left field for easy erasure at one fell swoop.
A RAM disk is not "on" any hard disk, rather it is in RAM, fast electronic chip based storage. It is a disk in the sense that an area of RAM is reserved for storing things that are more conventionally written to HD space. It is a Virtual Volume (HD) in chipspace. VM or Virtual Memory proper (an area of HD is assigned to augment real chip RAM) can be assigned to any volume you like in the memory control panel
I get it now!
David, your own together with Adrian's, Bruce Johnson's, and David Klaus's patient replies are invaluable in helping me (perhaps others as well) into understanding what this partitioning jazz and the related broader matter of "file architecture" is all about. I have learned that I learn (curse that it sometimes is) only when I get the principles involved. I'm getting there.
Dave
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