[CentOS] Re: Re: Re: mkbootdisk!

israel.garcia at cimex.com.cu
Tue, 05 Apr 2005 17:10:08 -0000

On Apr 5, 2005 7:17 AM, israel.garcia at cimex.com.cu
<http://lists.centos.org/mailman/listinfo/centos>
<israel.garcia at cimex.com.cu
<http://lists.centos.org/mailman/listinfo/centos>>
wrote:
>
> On Mon, April 4, 2005 8:42 pm, israel.garcia at cimex.com.cu
<http://lists.centos.org/mailman/listinfo/centos>
said:
> > On Sat, 2005-04-02 at 08:55 -0500, israel.garcia at cimex.com.cu
<http://lists.centos.org/mailman/listinfo/centos>
wrote:
> >> I'm trying to make a bootdisk in  my CentOS server and I got
this
> >> error..
> >>
> >> any ideas?
> >>
> >>
> >> [root at server
<http://lists.centos.org/mailman/listinfo/centos>:~]$ rpm
-qa kernel kernel-2.6.9-5.0.3.EL
> >> [root at server
<http://lists.centos.org/mailman/listinfo/centos>:~]$
mkbootdisk 2.6.9-5.0.3.EL --device
> >> /dev/fd0 Insert a disk in /dev/fd0. Any information on the disk
will be
> >> lost. Press <Enter> to continue or ^C to abort:
> >> cp: writing `/tmp/mkbootdisk.d20227/initrd.img': No space left
on device
> >> cat: write error: No space left on device
> >> cat: write error: No space left on device
> >> 20+0 records in
> >> 20+0 records out
> >
> > On Apr 2, 2005 5:23 AM, Johnny Hughes <mailing-lists at
hughesjr.com
<http://lists.centos.org/mailman/listinfo/centos>>
wrote:
> >
> >>>The kernel and initrd are too big to fit on a floppy ... there
is no
> >>>option to boot them from floppy any more.
> >
> > Johnny, If I can not use a floppy any more to boot my server, What can
I
> > use to
> > boot the server in case of a crash? How can I make a CD bootdisk to my
> > CentOS
> > Server? Is there another way to boot my server?
> >
> > regards;
> >
> > Israel
>
> >>>>You could probably use the first install disk to boot into
rescue mode.  I
> >>>>have done that with CentOS-3 and it worked fine for me.  I
would imagine
> >>>>CentOS-4 would be pretty similar in that respect.
>
> >>>~Dan
>
> Dan,....... I know the option "linux rescue mode" works fine,
but, my CentOS
> servers have a Software RAID (raid 1) installed and I used to make a
bootdisk
in
> case of a RAID failure (or a HDD crash), so, Now I can not make my bootdisk
> 'cause the error above...... in this case what can I use to boot my
server and
> keep my Soft RAID working?
>
> thanks for all your soon answers
> regards,
>

>>I'm confused. If your raid crashes, what good is a boot floppy
(which
>>is now totally impossible - the kernel and initrd will not fit on a
>>floppy) in the first place? You would be looking at a rebuild of the
>>raid and/or a restore from backup, so why not just use the CD in
>>resucue mode as recommended? What could a floppy possibly do that the
>>CD could not?

>>Please advise.
Collins,
Most of my servers are connected remotely, I migrated from WhiteBox to CentOS
linux, I had in every (remote) server a bootdisk (floppy), so in case of a raid
crash, some people there booted the server from the bootdisk and then I
reconstructed the Raid remotely...

I know if I boot from CD rescue mode I can get the same result, but,  people in
thouse places are not especialized in linux boxes. That is because  I want to
boot from a floopy, now I also know it's imposible, but, Can I make a CD
boot?,
I just want something to boot my remote server, get running all services and
later I reconstruct the RAID...

understand me now?

sorry my poor english!

regards,

israel