search for: supergrubdisk

Hi, I have a laptop with 2 hard drives. The first has Fedora 20 (no windows or anything else) and the second is unused. I would like to install CentOS7 on the unused drive so I can dual boot with the choice of the 2 OS's on the Grub menu. I am comfortable in partitioning drives and installing Linux distributions. I am afraid I may mess up the MBR and/or set up Grub incorrectly so I

...n/grub2-probe: error: unknown filesystem. I then tried to repair using: https://sourceforge.net/p/boot-repair-cd/home/Home/ but it didn't manage to solve the problem. (It reported success but the VM still won't boot.) More interesting was the effort with the supergrub2 disk: http://www.supergrubdisk.org/super-grub2-disk/ This managed to identify the available "boot methods" and allowed me to boot correctly. See screenshots: http://iweb.noa.gr/files/centos7/supergrub2-scratchvm-20170503-00.png http://iweb.noa.gr/files/centos7/supergrub2-scratchvm-20170503-01.png http://iweb.noa.gr/...

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

...ectory and mount the boot partition partition /dev/sda1 into /boot. I then used rsync to copy the source machine over to the Virtual Machine. I have not been able to get Grub to go further than : GRUB Loading stage1.5. GRUB Loading, please wait... Error 2 I have tried : the Super Grub http://www.supergrubdisk.org/wiki/Howto_Fix_Grub#GRUB_solution_.28Linux_shell.29 http://wiki.centos.org/TipsAndTricks/ReinstallGRUB # chroot /mnt/sysimage # grub-install /dev/sda /dev/sda does not have any corresponding BIOS drive. http://www.av8n.com/computer/htm/grub-reinstall.htm # grub-install --root-directory=/mnt...