Mike's PCjr Page

Is there any chance that a PCJR with the PC-Sprint board could handle a 1.44MB drive?

I think Mike or Trixter mentioned that the Bios does not support it.

The data rate issue is actually the floppy controller's fault. If you had a better floppy controller (that could read a faster data rate from disk), and bypassed the BIOS detection, a 1.44MB disk would just barely work on a stock system where literally nothing else was happening.