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Old 09-23-2009, 03:49 AM   #1
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Running "mainline" Linux on Xen: FAILED to find root device


I compiled kernel on Fedora 10 with all necessary Xen options enabled. After successful process of compilation command file gave me this result:

file /boot/*

/boot/vmlinuz- Linux kernel x86 boot executable RO-rootFS, root_dev 0x902, swap_dev 0x2, Normal VGA
/boot/vmlinuz- Linux kernel x86 boot executable RO-rootFS, swap_dev 0x2, Normal VGA

We can see that in comparison to original Fedora 10 kernel, root_dev 0x902 is missing from the vmlinuz. I checked all other relevant parameters and everything else seems fine.

Does anybody know how to set up properly root device and what is the reason for failure?
I tried with rdev command which gives:
rdev /boot/vmlinuz-
Root device 0xca01

so, I'm wondering why this output is not included in the file command result?
Old 09-17-2010, 11:42 PM   #2
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Sounds like you might need an initrd setup for your new kernel.
Have you given mkinitrd a shot? (Check the man page!)


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