This is what I keep in my bookmark collection.
http://www.win.tue.nl/~aeb/partitions/partition_types-1.html
That section of the page mentions this, but it is no longer available.
http://support.microsoft.com/support/msdn/sdk/platforms/doc/sdk/win32/95guide/src/fat32ovr_4.asp
If I go to Wikipedia, I get this.
http://en.wikipedia.org/wiki/File_Allocation_Table
0x0B and 0x0C. The latter type is also named FAT32X in order
to indicate usage of LBA disk access instead of CHS. On such
partitions, some CHS-related geometry entries in the EBPB record,
namely the number of sectors per track and the number of heads,
may contain no or misleading values and should not be used.
Win98 apparently has some size-related info stored in the
header of the file system, which causes problems if it is moved.
Maybe that is related to that description, not sure. I cannot
say I have had reason to move a Win98 partition, so I have never
experienced a problem like that. Usually, where I have got Win98,
it is all by itself.
HTH,
Paul