OK, I did the following, and need some more help, I think.
I use a Vaio notebook under XP with the NTFS file system, thus not easy to boot Knoppix and then access the harddisk.
So found mkcramfs Win32
here.
Converted some directory, containing a web site copy, to a cramfs volume.
On the zaurus, copied it to a cramfs subdir on the CF, created an empty dir for it, and then I had to do the following:
su
mknod /dev/loop2 b 7 2
mount -t cramfs /mnt/cf/cramfs/test.cramfs /mnt/cf/cramfs/test -o loop
This went OK.
Now I see the dir, and the index.htm file in it, but it's empty.
I.e. doing cat index.htm, there's no output, and most of the files in the subdir of the test dir are now empty, though they shouldn't be.
Is this a problem of the mkcramfs Win32 package, i.e. that it's not doing a good job at converting the files to cramfs? I did get the following error when I ran mkcramfs:
warning: gids truncated to 8 bits (this may be a security concern)
I tried and tried to find a mkfs.cramfs or mkcramfs for Cygwin, but no luck. Where should I look?