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From: salgud on 6 May 2008 14:40
On Mon, 05 May 2008 20:43:41 -0500, Jolly Roger wrote:

> In article <1uedpva9e95l1.dhdqo0rcvfk6$.dlg(a)40tude.net>,
> salgud <spamboy6547(a)comcast.net> wrote:
>
>> I'm getting my first Mac, an iMac in the next month or so.
>
> Congrats. Welcome the the Mac community! We're glad to have you. : )
>
>> I have a 120 Gb
>> external HD to which I'm backing up all my Windoze files for transfer.
>> After I effect the transfer, I want to partition and reformat the external
>> HD. Can I partition it so that part it is for Time Machine, for routine
>> file backup, and part of it is a bootable drive for emergencies?
>
> Sure.
>
>> (I know
>> that Apple recommends a TM drive be about 1.5 times the main drive, but at
>> least for now, I don't have anywhere near 250 Gb of data. More like 30 Gb,
>> including Leopard. So a 60 or 80 Gb partition for TM should be sufficient
>> with room enough even as I add more files.)
>
> Ok so...
>
> You'll use /Applications/Utilities/Disk Utility to do the partitioning.
> You'll create a ~10 GB partition for the bootable emergency partition,
> formatted with HFS Extended. You'll install Mac OS X on that.
>
> Then create another partition with the remainder of the space to use as
> a Time Machine partition.
>
>> Also, I will be running
>> Parellels for some Windoze apps, do I need a FAT or NTFS partition for
>> that?
>
> Neither! Virtualization software like Parallels Desktop and vmWare
> Fusion, by default, create a file in Mac OS X that acts as a hard drive
> for the guest operating system to Mac OS X, the file is just a binary
> file. To the guest operating system (Windows), it's the startup drive.
> So while you can instruct both to use a FAT/NTFS partition, there's
> really no need for one.
>
>> Assuming this kind of arrangement can work, how big of a partition do
>> I need for the bootable drive?
>
> I'd say around 10 GB should be plenty.
>
>> I also welcome any suggestions as to other possible uses for partitions so
>> I can do this once and not have to do it again later. What do others use
>> partitions for and what size partitions do you recommend?
>> Thanks in advance.
>
> Personally, even with my Unix/Linux background, I avoid partitioning if
> I can help it, and only create as many as I absolutely have to, because
> repartitioning isn't something I like to spend my afternoons doing, and
> the drawbacks usually outweigh the benefits. ; )

Thanks to everyone for your replies.
My plan is to create one partition of about 15 Gb for the bootable drive.
I'll give it a little extra in case the next release of OS X is bigger than
Leopard, so I won't have to repartition the drive. Which would leave about
105 Gb for TM, backing up, at present, about 15 Gb of data. Shoule be
plenty to last me a while.
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