I recently had a failing disk replaced in my colo server. The server
is running Centos 7.3.
After the replacement, I was following these instructions to rebuild
the RAID array that the disk was part of.
https://help.1and1.co.uk/servers-c40665/dedicated-server-linux-c40577/rescue-and-recovery-c40581/rebuild-the-software-raid-array-after-a-drive-replacement-a729756.html
Everything went fine until I reached the final section ("Grub Setup").
This section talks about running a command line program called "grub"
to change the Grub configuration. And that program doesn't seem to be
installed on this server.
I admit that my knowledge of Grub is somewhat lacking. I know that
Centos 7 uses Grub2 rather than the original Grub, but I don't know
what replaced the "grub" command (or perhaps nothing replaced it and I
just need to install a missing RPM).
Any advice would be gratefully received.
Thanks,
Dave...
--
Dave Cross :: dave at dave.org.uk
http://dave.org.uk/
@davorg
On Tue, Aug 08, 2017 at 09:01:30AM +0100, Dave Cross wrote:> I recently had a failing disk replaced in my colo server. The server > is running Centos 7.3. > > After the replacement, I was following these instructions to rebuild > the RAID array that the disk was part of. > > https://help.1and1.co.uk/servers-c40665/dedicated-server-linux-c40577/rescue-and-recovery-c40581/rebuild-the-software-raid-array-after-a-drive-replacement-a729756.html > > Everything went fine until I reached the final section ("Grub Setup"). > This section talks about running a command line program called "grub" > to change the Grub configuration. And that program doesn't seem to be > installed on this server. >grub2 install /dev/sda grub2 install /dev/sdb should do it, assuming the two actual physical disks are seen as /dev/sda and /dev/sdb -- Scott Robbins PGP keyID EB3467D6 ( 1B48 077D 66F6 9DB0 FDC2 A409 FA54 EB34 67D6 ) gpg --keyserver pgp.mit.edu --recv-keys EB3467D6
On 8 August 2017 at 10:56, Scott Robbins <scottro11 at gmail.com> wrote:> On Tue, Aug 08, 2017 at 09:01:30AM +0100, Dave Cross wrote: >> I recently had a failing disk replaced in my colo server. The server >> is running Centos 7.3. >> >> After the replacement, I was following these instructions to rebuild >> the RAID array that the disk was part of. >> >> https://help.1and1.co.uk/servers-c40665/dedicated-server-linux-c40577/rescue-and-recovery-c40581/rebuild-the-software-raid-array-after-a-drive-replacement-a729756.html >> >> Everything went fine until I reached the final section ("Grub Setup"). >> This section talks about running a command line program called "grub" >> to change the Grub configuration. And that program doesn't seem to be >> installed on this server. >> > > grub2 install /dev/sda > grub2 install /dev/sdb > > should do it, assuming the two actual physical disks are seen as > /dev/sda and /dev/sdbThanks. That's what my independent research was showing me too. I assume it's already installed to /dev/sda (as it was sdb which was recently replaced and the system is rebooting quite happily). Is there a command that shows which disks already have Grub2 installed? Dave... -- Dave Cross :: dave at dave.org.uk http://dave.org.uk/ @davorg