[  251.367400] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
[  251.375643] SMP: stopping secondary CPUs
[  251.379568] Kernel Offset: disabled
[  251.383016] CPU features: 0x1000,00000000,02004ca0,0400721b
[  251.388571] Memory Limit: none
[  251.391643] ---[ end Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) ]---