Boot Failure

Boot Failure

[Rye, Gene R.]

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After loading RHEL5 onto a system and then configuring the security in
accordance with the NSA Guide, I cannot boot the system.  I am getting
the error :

 

     Memory for crash kernel (0x0 to 0x0) not within permissible range

 

             Kernel panic - not syncing: VFS: Unable to mount root fs on
unknown-block (0,0)

 

I believe there may be a problem with the /boot/grub/grub.conf file.  I
can boot the system with a Fedora livecd but am denied access to modify
the file.  Any words of help?

Thanks

Gene Rye

 


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Re: Boot Failure

[Peter Briggs]

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I believe that after you boot from the live cd, you can remount the boot 
partition with something like

mount -o rw,remount <device for boot partition>

such as

mount -o rw,remount /dev/sda1

if the boot /boot were on /dev/sda1

and you can just type

mount

to find out where /boot is currently mounted

Good Luck

PS -
   The   "memory for crash kernel ..."   thing is, I think, normal

On 7/26/11 8:58 AM, Rye, Gene R. wrote:
>
> After loading RHEL5 onto a system and then configuring the security in 
> accordance with the NSA Guide, I cannot boot the system.  I am getting 
> the error :
>
>      Memory for crash kernel (0x0 to 0x0) not within permissible range
>
>              Kernel panic - not syncing: VFS: Unable to mount root fs 
> on unknown-block (0,0)
>
> I believe there may be a problem with the /boot/grub/grub.conf file.  
> I can boot the system with a Fedora livecd but am denied access to 
> modify the file.  Any words of help?
>
> Thanks
>
> Gene Rye
>

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Re: Boot Failure

[Steve Grubb]

On Tuesday, July 26, 2011 09:24:26 AM Peter Briggs wrote:
> I believe that after you boot from the live cd, you can remount the boot
> partition with something like
> 
> mount -o rw,remount <device for boot partition>
> 
> such as
> 
> mount -o rw,remount /dev/sda1
> 
> if the boot /boot were on /dev/sda1
> 
> and you can just type
> 
> mount
> 
> to find out where /boot is currently mounted

You can also use the rescue image and it makes everything accessible so that you can 
fix things.

-Steve