Title [lDOS] Diskettes with >65_535 sectors would generate wrong UPB BPB
AuthorE. C. Masloch
Created2026-10-18 11:15:08 +0200 Oct Sun
State closed

In msdisk.nas, MOVBPB and HAS1 would not accept the full range of possible BPB values. In particular, the DRVLIM_H field was zeroed, so a sector amount past 65_535 would be corrupted.

E. C. Masloch on 2026-10-18 11:17:47 +0200 Oct Sun

Fixed in hg fd0b25579a0b on 2026-10-16. MOVBPB now transfers all BPB values, allowing 256 CHS Heads and >65_535 LBA sectors.