I did the following procedure.
Took kernel 2.6.12.15. Patched it and compiled it. I
am not sure where do I need to change
uml/linux-2.6.12.5/dev and uml/linux-2.6.12.5/etc
files. As these directory was not created when I
complied the kernel. And I was not sure if I need to
do it as a root in the /dev and /etc directory. So I
skipped that step and that may be creating an issue.
Now I made modules. Downloaded the root_fs, mounted
it, did make modules_install and unmount mnt. Now when
I try and start user mode linux I get the following
error message.
-----------------------------
Initialized stdio console driver
Console initialized on /dev/tty0
VFS: Cannot open root device "98:0" or
unknown-block(98,0)
Please append a correct "root=" boot option
Kernel panic - not syncing: VFS: Unable to mount root
fs on unknown-block(98,0)
EIP: 0073:[<a011abe2>] CPU: 0 Not tainted ESP:
007b:a08a\76a4 EFLAGS: 00000282
Not tainted
EAX: 00000000 EBX: 00000001 ECX: a08a774c EDX:
a08a76cc
ESI: 00000008 EDI: 0000000a EBP: a08a76ac DS: 007b ES:
007b
a08afb74: [<a0030996>] notifier_call_chain+0x1c/0x38
a08afb90: [<a0022421>] panic+0x4a/0xd3
a08afba4: [<a000185e>] mount_block_root+0xb9/0xcd
a08afbf8: [<a0001962>] mount_root+0x26/0x2a
a08afc10: [<a0001a28>] prepare_namespace+0xc2/0x100
a08afc1c: [<a000d1ee>] init+0x57/0xd9
a08afc28: [<a000fc68>] run_kernel_thread+0x31/0x3f
a08afc34: [<a000d197>] init+0x0/0xd9
a08afc44: [<a000fc54>] run_kernel_thread+0x1d/0x3f
a08afcc8: [<a0011b80>] unblock_signals+0x7/0x9
------------------------
What I need to do?
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