Norton Utilities 4.5 Advanced Edition (01-03-1989)
Released in 1989 by Peter Norton
For DOS

The Norton Utilities is a suite of disk and system utilities designed
to enhance system performance and stability. It started off as a set
of disk utilities written by Peter Norton, and later was sold by
Symantec. It competed against Central Point PC Tools.

Norton Utilities 4.5 was extremely popular. This version supports DOS
4.x and FAT partitions up to 2GB.

This is the must-have version for any vintage 8088/286 DOS computer.