I've tried three different methods I've found on the forums for making Mac boot disks on a PC, and so far the SE/30 is rejecting everything. I may just have to bite the bullet and track down a legitimate set of System 7 disks. I also saw a thread about replacing the hard drive with a CF card, which I could easily swap out and plug into my Mac to get data onto it that way. However, it seems like executing such a replacement would be a little bit convoluted (ie. CF>IDE adapter, IDE adapter > SCSI adapter, introducing several potential error points).