AW: VFS: unable to mount root fs

Lang, Christian clang at helios.med.uni-muenchen.de
Mon Nov 12 23:27:07 PST 2001


Hello!

Wolfgang Kerler wrote:
>Elmar Weber wrote:
>> 
>> hello,
>> 
>> while booting the lfs kernel the system writes:
>> 
>> request_module[block-device-22]Root fs not mounted
>> VFS: Cannot open root device "1604" or 16:04
>> Please append a correct "root=" boot option
>> Kernel Panic: VFS: Unable to mount root fs von 16:04
>> 
>> then it stops
>> 
>> how can i fix that problem?
>> 
>> i have tried to build the kernel with the parameter
>> "CONFIG_CMDLINE=root=/dev/hdc4" (as mentioned in the kernel docs
>> 
>(--snip--)
>
>I don't know what kind of filesystem you are using, but perhaps you
forgot to
>compile the support for your root filesystem directly into your kernel
(not as
>a module!). As far as I know it is _not_ possible to use a kernel
module for
>the root filesystem. The "request_module" message sounds as if this
could be
>your problem! So you should have a look at your kernel configuration
and check
>the filesystem support section.
>
>Wolfgang

If posted a similary question three weeks ago, but we haven't fixed the 
problem yet. But Dirk Heinrichs give me a good tip. 

Dirk Heinrichs wrote:
>Is hdd1 == 16:41? Here it is 22:65.
>
>ls -l /dev/hdd1
>brw-rw----    1 root     disk      22,  65 Mai  5  1998 /dev/hdd1

That's right. Also on my System.

But I don't know how I can tell Linux to mount root fs on 22:65 
instead of 16:41? Where is the mistake?
Does anybody help us?

Thanks

Christian
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