After removing a yellow tape mark by duplicating the red channel, adjusting curves, saving it as a new doc. and then applying it, my options to save the corrected photo are limited. I'm trying to save these files for my siblings who have all requested that they be in bmp format. There's no option to save as a bmp anymore. I've even tried to 'trick' photoshop by selecting all, and copying to a new document, but even that won't let me save as anything except: psd, pdd, cin, sdpx, dpx, fido, psb, pdf, pdp, raw, png, tif. Any ideas?

Scratch this... I figured it out.

Hi,
Do you have checked if you are in RGB, 8bit, mode? An unsupported mode can prevent you to choose BMP to save your file.
Hope it helps,
CB

Yes cebe, that was the problem, thanks for your reply.