Looking for weeks, none of the whole disk hex editors I tried work with newest Macs.
All of them seem to be for older Macs.
Modern "for pay" hex editors seem to only handle "files" and are used as a poor man's text editor.
I have no interest whatever in files, I want to expose all of the disk to scrutiny, not just the "files".
Had hex editor years ago called "HexEdit" - worked great with old Macs using "Big Endian" addressing with Motorola CPU.
Today's Macs use Intel CPU with "Little Endian" addressing.
Reason for hex editor? Just for fun and recreation, to observe and hopefully monitor every single hex byte on the entire drive. (or on the SSD which most modern Macs use now)
Will require an expert who is familiar with present day Macs and OS 10.9 (Maverick)
Thanks all -
SuperSenile (and can prove it, I am 100% senile)