I have menu.lst trouble adding multiple entries.
 

I'm building an emergency flash drive I can carry with multiple programs. So far I have three iso's but I can only boot to one, SeaTools for DOS. I've done this one at a time with each iso but I want all three on one stick. I've used RMPrepUSB to prep the drive and it was done correctly, for one iso at least because I've successfully done it with each iso.

My menu.lst below

title Sea Tools for DOS v576
find --set-root /SeaToolsDOS222ALL576.iso
map /SeaToolsDOS222ALL576.ISO (hd32)
map --hook
root (hd32)
chainloader (hd32)

title AVG Boot-time Scan
find --set-root /AVGBOOTSCAN.iso
map /AVGBOOTSCAN.iso
map --hook
root (hd32)
chainloader (hd32)

title Ultimate Boot CD 503
find --set-root /ubcd503.iso
map /ubcd503.iso
map --hook
root (hd32)
chainloader (hd32)

Each file one the usb is at the root level H:\ and include.
grldr
menu.lst
avgbootscan.iso
SeaToolsDOS222ALL576.ISO
ubcd503.iso

What are your suggestions?

Whilst I am not really familiar with this format all that much, I would say there is at least one difference between the first entry and the rest.
Your first map entry is:
Here you have capitalised the extension 'ISO' from the previous line and have included (hd32) at the end.
None of the other first map entries have these things. Hope that helps.

Quite possible but I figured as long as the caps in the lst corresponded with file names, I wouldn't have figured there'd be any problems. I'll check it but right now I'm using "multiboot usb" from pen drive linux. Sure would like to customize my own rather than install from their pre-compiled list.

Thanks
The Ozz