Rescatux was the standard for grub repair in MBR and EFI systems. It has a ton of tools. Recent updates arent compatible with new machines and the system wont load anymore. If you have a GPU+CPU machine (like a AMD A6 R4) forget to use rescatux.
However if your machine is compatible, use rescatux as it's probably the best tool for repairing boot problems, disk management and thousand of thing more.
MiniTool Partition Wizard - As a partition magic alternative, Minitool Partition Wizard is the latest partition manager software which be used to manage partition on Windows 10/8/7/XP and Server 2003/2008/2012.
Hirens BootCD - Hirens BootCD is a powerful, all-in-one boot disk utility that will help you resolve and make reformatting your computer easily.
EaseUS Partition Master - EaseUS Partition Master Free is a free partition software that can resize, move, merge and copy partitions for Windows 10/8/7/Vista/XP.
Finnix - Finnix is a small, self-contained, bootable Linux CD distribution for system administrators, based...
Diskpart - diskpart is a command-line hard disk partitioning utility included in versions of the Windows NT...
Ultimate Boot CD - The last Boot CD you'll ever need. You need the Ultimate Boot CD if you want to: