I am using root_fs_redhat_7.0_big.bz2 as the root filesystem when I compile and patch the kernel to run uml. After I boot uml, I can not login because I do not know the password for root and user.
No such problem with debian package.
Here's what I did to solve the problem:
I booted uml linux in the single user mode as follows:
Then I changed the root password using the passwd command.
Then I halted uml linux using the halt command.
Then I started /usr/bin/linux in multi-user mode.
Another way to deal with the uml in the eairly stages is mount the root_fs, this is also how I got the modules loaded.
mkdir -p /mnt/uml ; # any mount point
cd /usr/src/uml ; # or your path to uml
mount -t ext2 -o loop root_fs /mnt /uml
chroot /mnt/uml /bin/bash --login
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