sudo strace -ff mount -o loop -t iso9660 DaphneX_96.iso /mnt/iso 2>&1|grep ^open|tail
open("/usr/lib/locale/en_US.UTF-8/LC_CTYPE", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/lib/locale/en_US.utf8/LC_CTYPE", O_RDONLY) = 3
open("/dev/null", O_RDWR|O_LARGEFILE)   = 3
open("/etc/blkid.tab", O_RDONLY)        = -1 ENOENT (No such file or directory)
open("/dev/loop0", O_RDONLY|O_LARGEFILE) = 3
open("DaphneX_96.iso", O_RDWR|O_LARGEFILE) = 3
open("/dev/loop0", O_RDWR|O_LARGEFILE)  = 4
open("/dev/loop0", O_RDONLY|O_LARGEFILE) = 3
open("/usr/share/locale/en/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/share/locale-langpack/en/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
jason@HFS:~$