When I umount debian-live-503-i386-rescue.iso(the guest os iso), it says "VFS: busy inodes on changed mdedia"
then I choose the additions iso from Devices/CD Dvd Devies.
run mount /dev/cdrom /mnt/cdrom
SQUASHF error: zlib_inflate returned unexpected result 0Xfffffffd, srclength 131072, avail_in 957, avail_out 131072
SQUASHF error: sb_bread failed reading block 0X6823
SQUASHF error: unable to read page, block 19fd441, size bb9f
This error message repeated a few time.
When I use mount -t iso9660 /dev/cdrom /mnt/cdrom, no error message, but the result(only one fold and one file shown in the /mnt/cdrom) is the same.
I tried in two computer, one host runs winxp another runs vista, the same on both computer.