Problem when downloading zImage to DE2-115 (cont.)

Thank you. I managed to download and made it verify succesfully. But now it seems there is no filesystem to mount. Have you encountered that ?

root@F15:~/altera/12.1/nios2eds/bin# ./nios2-terminal
nios2-terminal: connected to hardware target using JTAG UART on cable
nios2-terminal: "USB-Blaster ", device 1, instance 0
nios2-terminal: (Use the IDE stop button or Ctrl-C to terminate)
Linux version 3.7.0-01377-g1061bd7-dirty (root@F15) (gcc version 4.1.2)# 16 Thu May 9 11:05:35 EEST 2013
bootconsole  enabled
early_console initialized at 0xe8001440
On node 0 totalpages: 32768
free_area_init_node: node 0, pgdat c02faac0, node_mem_map c0310780
  DMA zone: 256 pages used for memmap
  DMA zone: 0 pages reserved
  DMA zone: 32512 pages, LIFO batch:7
pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
pcpu-alloc:  0 
Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 32512
Kernel command line: 
PID hash table entries: 512 (order: -1, 2048 bytes)
Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
Memory available: 126776k/3130k RAM (2387k kernel code, 742k data)
NR_IRQS:64
Calibrating delay loop... 23.45 BogoMIPS (lpj=46912)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 512
NET: Registered protocol family 16
bio: create slab <bio-0> at 0
Switching to clocksource timer
NET: Registered protocol family 2
TCP established hash table entries: 4096 (order: 3, 32768 bytes)
TCP bind hash table entries: 4096 (order: 2, 16384 bytes)
TCP: Hash tables configured (established 4096 bind 4096)
TCP: reno registered
UDP hash table entries: 256 (order: 0, 4096 bytes)
UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
NET: Registered protocol family 1
RPC: Registered named UNIX socket transport module.
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
RPC: Registered tcp NFSv4.1 backchannel transport module.
jffs2: version 2.2. (NAND) © 2001-2006 Red Hat, Inc.
msgmni has been set to 247
Block layer SCSI generic (bsg) driver version 0.4 loaded (major 254)
io scheduler noop registered
io scheduler deadline registered
io scheduler cfq registered (default)
ttyJ0 at MMIO 0x8001440 (irq = 1) is a Altera JTAG UART
console  enabled, bootconsole disabled
console  enabled, bootconsole disabled
mousedev: PS/2 mouse device common for all mice
TCP: cubic registered
NET: Registered protocol family 17
List of all partitions:
No filesystem could mount root, tried: 
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)