[CLUE-Tech] modifying .iso filesystem when mounted -o loop?

[Dave Price]

Hi,

Is there a way to make changes to an iso filesystem when it is mounted
in loopback mode?  When I try to cp a file into the file system, I get:

dp:/home/davep# cp seat.lst /iso/
cp: cannot create regular file `/iso/seat.lst': Read-only file system

I suppose I could cp the files to a new location and then rebuild the
iso, but I hope there might be an easier way?

TIA

aloha,
dave