[uml-user] question on running uml

[Yu Yang]

Hello, everyone,

I am a newbie to user-model-linux. Sorry for the spamming naive questions.

I patched  Linux kernel 2.6.14.7 , and compile it successfully.  But I stuck on
make UML run.  I tried to specify some file systems and make UML run,

# mount root_fs_slack8.1  /dev/ubd/ -o loop
# ./linux root=/dev/ubd

UML reports  errors similar to below:

[42949373.440000] VFS: Cannot open root device "ubd" or unknown-block(0,0)
[42949373.440000] Please append a correct "root=" boot option
[42949373.440000] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
[42949373.440000]


Any suggestions on this?

Thanks a lot!

-Andy