Something

pfitzner:/var/images# xm create -c xenvm1 vmid=1
Using config file "/etc/xen/xenvm1".
/usr/lib/xen-3.0-unstable-1/bin/../lib/python/xen/xm/opts.py:452: DeprecationWarning: Non-ASCII character '\xfc' in file /etc/xen/xenvm1 on line 2, but no encoding declared; see http://www.python.org/peps/pep-0263.html for details
  execfile(defconfig, globs, locs)
Started domain xenvm1
Linux version 2.6.17-2-xen-686 (Debian 2.6.17-9) (waldi@debian.org) (gcc version 4.1.2 20060901 (prerelease) (Debian 4.1.1-13)) #1 SMP Wed Sep 13 20:58:20 UTC 2006
BIOS-provided physical RAM map:         
 Xen: 0000000000000000 - 0000000008800000 (usable)
0MB HIGHMEM available.                            
136MB LOWMEM available.
ACPI in unprivileged domain disabled
Built 1 zonelists                   
Kernel command line:  root=/dev/sda1 ro
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Initializing CPU#0                                   
PID hash table entries: 1024 (order: 10, 4096 bytes)
Xen reported: 2999.996 MHz processor.               
Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)
Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)  
Software IO TLB disabled                                     
vmalloc area: b9000000-fb7fe000, maxmem 43ffe000
Memory: 126760k/139264k available (1504k kernel code, 4148k reserved, 538k data, 144k init, 0k highmem)
Checking if this processor honours the WP bit even in supervisor mode... Ok.                           
Calibrating delay using timer specific routine.. 7504.22 BogoMIPS (lpj=15008442)
Security Framework v1.0.0 initialized                                           
SELinux:  Disabled at boot.          
Capability LSM initialized 
Mount-cache hash table entries: 512
CPU: Trace cache: 12K uops, L1 D cache: 16K
CPU: L2 cache: 2048K                       
Checking 'hlt' instruction... OK.
SMP alternatives: switching to UP code
Freeing SMP alternatives: 16k freed   
Brought up 1 CPUs                  
migration_cost=0 
Grant table initialized
NET: Registered protocol family 16
Brought up 1 CPUs                 
PCI: setting up Xen PCI frontend stub
ACPI: Subsystem revision 20060127    
ACPI: Interpreter disabled.      
Linux Plug and Play Support v0.97 (c) Adam Belay
pnp: PnP ACPI: disabled                         
xen_mem: Initialising balloon driver.
PCI: System does not support PCI     
PCI: System does not support PCI
NET: Registered protocol family 2
IP route cache hash table entries: 2048 (order: 1, 8192 bytes)
TCP established hash table entries: 8192 (order: 4, 65536 bytes)
TCP bind hash table entries: 4096 (order: 3, 32768 bytes)       
TCP: Hash tables configured (established 8192 bind 4096) 
TCP reno registered                                     
audit: initializing netlink socket (disabled)
audit(1159966207.227:1): initialized         
VFS: Disk quotas dquot_6.5.1        
Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
Initializing Cryptographic API                            
io scheduler noop registered  
io scheduler anticipatory registered (default)
io scheduler deadline registered              
io scheduler cfq registered     
RAMDISK driver initialized: 16 RAM disks of 8192K size 1024 blocksize
Xen virtual console successfully installed as tty1                   
Event-channel device installed.                   
blkif_init: reqs=64, pages=704, mmap_vstart=0xb7800000
netfront: Initialising virtual ethernet driver.       
PNP: No PS/2 controller found. Probing ports directly.
i8042.c: No controller found.                         
TCP bic registered           
NET: Registered protocol family 1
NET: Registered protocol family 17
NET: Registered protocol family 8 
NET: Registered protocol family 20
Using IPI No-Shortcut mode        
Registering block device major 8
No filesystem could mount root, tried:  cramfs
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(8,1)
 pfitzner:/var/images#