No. It doesn't. But skimping on HDD space will hamper OS X, which can limp along with 3.5GB, but will have little room for its behind-the-scenes housekeeping and memory management.
If you wish to partition your drive with independently bootable partitions, it is OS 9 that can tolerate the smaller partition, say, 3GB, depending on the number and size of OS 9 apps that you have. You haven't indicated whether the drive is original (~6-12GB?) or larger. Consider that you may have little inclination towards OS 9 after a short time with OS X, and will then have some difficulty in re-allocating disk space between the two OSs. Why not consider a 500MB partition for OS 9 as a rescue boot partition, and allocate the rest (up to 7.9GB) to OS X? Further, you can then also run the OS 9 from within OS X in Classic Mode.
Alternatively, perhaps now is the time to think about a larger drive?
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If you wish to partition your drive with independently bootable partitions, it is OS 9 that can tolerate the smaller partition, say, 3GB, depending on the number and size of OS 9 apps that you have. You haven't indicated whether the drive is original (~6-12GB?) or larger. Consider that you may have little inclination towards OS 9 after a short time with OS X, and will then have some difficulty in re-allocating disk space between the two OSs. Why not consider a 500MB partition for OS 9 as a rescue boot partition, and allocate the rest (up to 7.9GB) to OS X? Further, you can then also run the OS 9 from within OS X in Classic Mode.
Alternatively, perhaps now is the time to think about a larger drive?
de