If you backup MBR in advance, you can use it to restore your computer and make it work as normal. Then it will scan the partition table, determine the active partition, load a copy of the boot sector into the PC's RAM, and hand off the startup process. When a PC starts, the BIOS will load the master boot code into the PC's RAM. It also hosts the Master Boot Record (MBR), which contains the disk signature, partition table for the disk, and a small bit of code called the master boot code. The boot sector contains some code and data that helps BIOS hand off the startup process to Windows. It's created when you format the hard drive. The boot sector is a small section at the beginning of a hard drive. Then, what are the boot sector and master boot record exactly? And you will receive an error message like the following before Windows actually begins to load.įATAL: No bootable medium found! System halted. If you have Windows 7 boot problems, the boot sector or master boot record on your system partition may be damaged, corrupted, or has missing files. When need to perform Windows 7 boot repair command prompt? Useful tip: backup computer to greatly reduce data losses.Boot Repair Windows 7 from Command Prompt | 5 Ways.Run Startup Repair first with installation disc.When need to perform Windows 7 boot repair command prompt?.Repair your computer and protect your data:

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