$ md5sum Debian-3.0r0.ext2 
9edd42945f94345eafc02fc2b1c49972  Debian-3.0r0.ext2
$ md5sum `which linux`
b25ba0e0c2060b7e2f4f976a0b596e45  /usr/bin/linux
$ linux ubd0=cow,Debian-3.0r0.ext2 devfs=mount
$ linux ubd0=cow,Debian-3.0r0.ext2 devfs=mount >> uml-0.txt
Checking for the skas3 patch in the host...not found
Checking for /proc/mm...not found
Checking for /dev/anon on the host...Not available (open failed with errno 2)
Checking for /dev/anon on the host...Not available (open failed with errno 2)
Checking for /dev/anon on the host...Not available (open failed with errno 2)
Checking for /dev/anon on the host...Not available (open failed with errno 2)
Linux version 2.4.23-2um (mdz@mizar) (gcc version 3.3.3 20040110 (prerelease) (Debian)) #1 Mon Jan 19 09:42:11 PST 2004
On node 0 totalpages: 8192
zone(0): 8192 pages.
zone(1): 0 pages.
zone(2): 0 pages.
Kernel command line: ubd0=cow,Debian-3.0r0.ext2 devfs=mount root=/dev/ubd0
Calibrating delay loop... 1305.30 BogoMIPS
Memory: 28704k available
Dentry cache hash table entries: 4096 (order: 3, 32768 bytes)
Inode cache hash table entries: 2048 (order: 2, 16384 bytes)
Mount cache hash table entries: 512 (order: 0, 4096 bytes)
Buffer cache hash table entries: 1024 (order: 0, 4096 bytes)
Page-cache hash table entries: 8192 (order: 3, 32768 bytes)
Checking for host processor cmov support...Yes
Checking for host processor xmm support...No
Checking that ptrace can change system call numbers...OK
Checking that host ptys support output SIGIO...Yes
Checking that host ptys support SIGIO on close...No, enabling workaround
POSIX conformance testing by UNIFIX
Linux NET4.0 for Linux 2.4
Based upon Swansea University Computer Society NET3.039
Initializing RT netlink socket
Starting kswapd
VFS: Disk quotas vdquot_6.5.1
Journalled Block Device driver loaded
devfs: v1.12c (20020818) Richard Gooch (rgooch@atnf.csiro.au)
devfs: boot_options: 0x1
pty: 256 Unix98 ptys configured
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
loop: loaded (max 8 devices)
Initializing Cryptographic API
Initializing software serial port version 1
mconsole (version 2) initialized on /home/mjt/.uml/bsbDDQ/mconsole
mtime mismatch (1048781280 vs 1075557396) of COW header vs backing file
unable to open cow for validation
Initializing stdio console driver
NET4: Linux TCP/IP 1.0 for NET4.0
IP: routing cache hash table of 512 buckets, 4Kbytes
TCP: Hash tables configured (established 2048 bind 4096)
Linux IP multicast router 0.06 plus PIM-SM
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
VFS: Cannot open root device "ubd0" or 62:00
Please append a correct "root=" boot option
Kernel panic: VFS: Unable to mount root fs on 62:00
 tracing thread pid = 23142