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Operating Systems Linux Centos 7.2 Convert single LVM to RAID Mirror Reinstall BootLoader Post 302972992 by imort on Thursday 12th of May 2016 12:44:38 PM
Old 05-12-2016
Did you tried
Code:
grub-install /dev/sda

?
 

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GRUB(8) 								FSF								   GRUB(8)

NAME
grub - the grub shell SYNOPSIS
grub [OPTION]... DESCRIPTION
Enter the GRand Unified Bootloader command shell. --batch turn on batch mode for non-interactive use --boot-drive=DRIVE specify stage2 boot_drive [default=0x0] --config-file=FILE specify stage2 config_file [default=/boot/grub/menu.lst] --device-map=FILE use the device map file FILE --help display this message and exit --hold wait until a debugger will attach --install-partition=PAR specify stage2 install_partition [default=0x20000] --no-config-file do not use the config file --no-curses do not use curses --no-floppy do not probe any floppy drive --no-pager do not use internal pager --preset-menu use the preset menu --probe-second-floppy probe the second floppy drive --read-only do not write anything to devices --verbose print verbose messages --version print version information and exit REPORTING BUGS
Report bugs to <bug-grub@gnu.org>. SEE ALSO
update-grub(8), grub-install(8). The full documentation for grub is maintained as a Texinfo manual in the grub-legacy-doc package. If the info and grub programs are prop- erly installed at your site, the command info grub should give you access to the complete manual. grub (GNU GRUB 0.97) January 2013 GRUB(8)
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