PFS:File Version B:00
Released in 1984 by Software Publishing Corporation
For DOS

Image Quality: Used/Modified (looks like configuration info was
written)

PFS:File is an easy to use flat file database that started off as
"PFS: The Personal Filing System" on the Apple II and then ported to
the IBM PC, TRS-80, and other platforms. OEM version were available
from various companies including IBM. Later it evolved in to
PFS:Professional File, and IBM rebranded a version as IBM Filing
Assistant.

This archive contains one 160K disk image.

Important: This disk contain copy protection. You must use the 
appropriate tool to write the images to a real disk, or use an
emulator that supports one of the copy protected disk image formats.

No unprotect is known to exist.

Protection type is a duplicate sector ID on track 10 head 0.

Important: This disk is formatted for DOS 1.x and will not open in 
some tools like WinImage