MSX-DOS 2 and UZLO

My MSX2 HDD image has UZLO on a partition. When I type dir /h, I find a few files that are strange because dir doesn't display that information correct and my own program that uses FindFile and FindNext returns garbage in the FIB structure.

The files are all hidden, read only:
MSXDOS.UZL
UZLO.Z has no file date and time
BOOTUZIX.Z has no file date and time
UZLOEXEC.BAT has no date and time
UZLO_DOS.BAT " "
UZLOCHEK.COM " "

MSX-DOS can't do anything with these files, so I can't remove them either. Attrib can't remove the hidden/read only status because "file not found". Is this a corruption on my disk or are these UZLO files put in place but is their administration never finished.