Description of problem: Please enhance grub2 to create a backup whenever it modifies the MasterBootRecord (MBR), the grub configuration file (grub.cfg, etc.), or the EFI settings.  Backing up by default would be a large improvement in Usability and Reliability.  I've had two grub installs fail just this week, and having backups by default would have been much more pleasant.

For instance; a file for the old MBR, a file for a copy of the old grub configuration, a file for the shell script which would re-create the old EFI settings.  Put the files in the same directory as the configuration file grub.cfg, and use a filename which contains a representation of the time of modification.  Possible examples:
     grub.cfg-2015-07-30T1345
     sda1-1434005789.mbr   # epoch date in seconds
     efivars-2015-07-30T1345.sh


Version-Release number of selected component (if applicable):
grub2-2.02-0.16.fc22.x86_64


How reproducible: every time


Steps to Reproduce:
1.Install Fedora.
2.
3.

Actual results: MBR, grub.cfg, and/or EFI variables are written without keeping a backup.


Expected results: Old MBR, grub.cfg, and/or EFI variables are saved into backup files whoe name contains a representation of the date pf modification.


Additional info:  Sometimes I forget to make backups by hand in advance.  Also, it would be very convenient for the backup files to reside in the _new_ system being installed.  Doing this by hand takes an extra step.