I ask because I have a large number of disks that I imaged in that fashion. For example I have images of a bunch of IBM 8 inch SS/SD CP/M disks and the like that way - no sector track information, just the sectors. (So, for example, such a file for an IBM 8 inch SS/SD diskette would be 77 (tracks) * 26 (sectors) * 128 bytes == 256256 bytes.) (DEC RX01 would be the same.)
I found I was able to define the disk format for this in the HxC emulator software (being quite surprised it was not already there), and then load such an image, but before I spend a lot of time trying to make such an image work on my Altair, I figured I would check first.

Thanks.