Cannot open root device "<NULL>"..please append a correct "root=" boot option...

Mike McCarty Mike.McCarty at
Thu May 28 12:36:37 PDT 2009

Mauricio Henriquez wrote:
> Hi guys,
> I just finish my third LFS system this time using LFS 6.4 usual I 
> make all the process in a vmware machine becouse I use it for teching 
> porpuses, but now at the end I have a kernel panic due to the fact that 
> it can't mount the root filesystem, the error is the one at subject:
> Cannot open root device "<NULL>"..please append a correct "root=" boot 
> are all the available partitions:
> [2.871] 0b00 1048575 sr0 driver: sr
> <Kernel panic stuff here>

This can be caused by a missing or incorrect driver for the
"disc" you are using. IOW, you may be missing the driver for
the part of the emulated chipset which runs the "disc".

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