sfc/scanboot
/scanonce
sfc/scanboot the above is only if you want it to scan every time the computer reboots. if you want it to only scan the next time you boot the command is sfc/scanonce
True
SFC, Chkdsk, and Defrag
The volume boot sector.
io.sys msdos.sys command.com
boot partitionThe boot partition is the disk partition that contains the Windows operating system files and its support files, but not any files responsible for booting.
The bootrec command line flag used to repair the boot sector of the system partition is /fixboot. This command writes a new boot sector to the system partition, which can resolve issues related to boot failures. It is typically used in the Windows Recovery Environment to troubleshoot and repair boot-related problems.
Boot volume
System files are files necessary to boot an operating system. They do not necessarily exist on any given NTFS volume, and the choice of file system does not affect which system files are present.
The bootrec command is a tool used in the Windows Recovery Environment to troubleshoot and repair issues related to the boot process. The bootrec /scanos option specifically scans for Windows installations that are not currently listed in the Boot Configuration Data (BCD) store. This command helps identify and restore missing or corrupted operating system entries, facilitating a successful boot. It is commonly used when a system fails to boot properly due to configuration issues or corrupted files.
Basically the system volume is required to start up, and the boot volume contains the OS. From http://support.microsoft.com/kb/314470: The system volume refers to the disk volume that contains the hardware-specific files that are needed to start Windows, such as Ntldr, Boot.ini, and Ntdetect.com. On computers that are running the Intel x86 line of CPU processors and later versions, the system volume must be a primary volume that is marked as active. This requirement can be fulfilled on any drive on the computer that the system BIOS searches when the operating system starts. The system volume can be the same volume as the boot volume. However, this configuration is not required. The boot volume refers to the disk volume that contains the Windows operating system files and the supporting files. By default, the Windows operating system files are in the WINDOWS folder, and the supporting files are in the WINDOWS\System32 folder. The boot volume can be the same volume as the system volume. However, this configuration is not required. There is only one system volume. However, there is one boot volume for each operating system in a multiboot system."