DFORMAT ERROR " IPL block is bad."on DiskOnChip 2000?

Sat Apr 19 05:48:31 EDT 2003

When I use the DOC5.1.4 DOS utilities'
DFORMAT /WIN:DC00 /S:DOC514.EXB /FIRST

ERRORS

DiskOnChip 2000 found in 0xdc000.
64M media, 16K unit
Virgin card rebuilding unit map.
Media has been scanned
ERROR - IPL block is bad.
Error formatting DiskOnChip.
Status code is 119 (flUnknow status) received from flFormatPhysicalDrive.
Format failed.

What's the matter with it?