With HD SC Setup v2.0, you can a set disk's interleave factor. That is,
you can reformat a standard hard disk with a different interleave factor
than the one installed.
Make sure the disk you wish to reformat does not contain any valuable data,
then follow these steps:
1) Run HD SC Setup.
2) At the first dialog box, choose the drive you want to initialize.
3) Press Command-I.
4) This presents a dialog box asking for the interleave factor.
Choose 1 for a 1:1 interleave, 2 for a 2:1 interleave, and so on.
5) Now choose Initialize.
Your drive is now reformatted to the specified interleave factor.