I'm having trouble installing CentOS-7 on my HP MicroServer.
I've tried with KDE LiveCD and Netinstall (both on USB sticks),
and now I'm going to try with the DVD ISO.
But I want to be quite sure I can return to CentOS-6.5
if things go wrong, so I'm wondering what precisely I need to copy
(eg the MBR and a bit more) so that I could get back to things as they were.
Is this documented anywhere?
Actually, both failed installations did give a boot menu
including the old 6.5 system,
but I'm afraid sometime this might not work,
and I will be cut off from the world.
Incidentally, the "Repair" option on the netinstall system
was not as useful as I expected,
or perhaps I don't know how to use it properly.
It entered the new CentOS-7 system OK on chroot-ing,
even mounting other partitions listed in /etc/fstab .
And I was able to bring up the interfaces with "service network restart".
But although I ran grub2-install , this did not help matters.
Is there anything else one can do after chrooting into a system?
Eg, can one boot the system in any way?
Any advice or suggestions gratefully received.
--
Timothy Murphy
e-mail: gayleard /at/ eircom.net
School of Mathematics, Trinity College, Dublin 2, Ireland
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