To cramfs, compressed minix file system appears to look like a cramfs file system. When kernel attempts to detect initrd file system type, cramfs detects it as cramfs type and attempts to mount compressed minix file system as cramfs file system. Obviously, that can only fail.
I ran into a similar problem with UDF, the filesystem for DVDs and some CD-ROMs. This might be incorporated into the kernel by default -- in the 2.5.x kernels it's listed under "CD-ROM" filesystems. Forcing it to build as a module fixed this problem.
-- boyd
- Linux-crypto: cryptography in and on the Linux system Archive: http://mail.nl.linux.org/linux-crypto/