Hi, all. I want to study kernel, so I tried booting my custom compiled kernel on qemu with '-kernel' and '-initrd' option. First, I installed ubuntu 10.10 with cdrom, no LVM. $ qemu disk.img -cdrom ubuntu-10.10-server-i386.iso -vnc :1 After installation, I tried booting my custom compiled kernel(but not modified, just compiled). $ sudo qemu -m 512 -enable-kvm disk.img -nographic -append "console=ttyS0 root=/dev/sda1 ro" -kernel bzImage -initrd initrd.img-2.6.37 And I got result like this. [ 2.687558] EXT4-fs (sda1): INFO: recovery required on readonly filesystem [ 2.688085] EXT4-fs (sda1): write access will be enabled during recovery [ 2.691679] EXT4-fs (sda1): recovery complete [ 2.944387] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null) Begin: Running /scripts/local-bottom ... done. done. Begin: Running /scripts/init-bottom ... done. [ 2.988413] e1000 0000:00:03.0: eth0: (PCI:33MHz:32-bit) 52:54:00:12:34:56 [ 2.988871] e1000 0000:00:03.0: eth0: Intel(R) PRO/1000 Network Connection After that, the machine just stopped and I don't know the cause. What is the cause, or how to find the cause? The whole log is in this url. https://gist.github.com/916961 Thank you for reading.