[Coco] dEd disk editor for RS-DOS

Allen Huffman alsplace at pobox.com
Thu Nov 20 16:09:43 EST 2025


I believe it was Robert Gault who made an RS-DOS clone of the OS-9 disk editor, dEd. I thought I had it, at one point, but cannot find it now. I believe it may have required an 80 column screen, working only on the CoCo 3.

I am wondering if there is a disk editor for CoCo 1/2’s 32 column screen — but not just a hex editor. dEd (under OS-9) would identify when you were looking at the FAT, for example. I do not recall of the RS-DOS dEd did something similar when looking at track 17 (FAT and directories).

When time allows, I have been falling down a deep rabbit whole about DECB/RS-DOS disk structure (more fun to experiment and learn). Having a disk editor would be useful. 

I do not recall if I ever had one in my pre-OS-9 days.

		— Allen



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