That’s why you cannot boot up computer after the partition is missing. It usually contains two folders, Boot and System Volume Information, and two files, bootmgr file and BOOTSECT.BAK file. When the computer starts, the Windows Boot manager reads data from the Boot Configuration Data (BCD) store and then starts the operating system from the system drive. In general, the partition is consisted of two parts.īoot manager and BCD file. It will not show up in File Explorer like other drives do to prevent stored files from deletion or modifying mistakenly.
System Reserved partition can be seen in Disk Management only because Windows does not assign a drive letter to it.
You can increase System Reserved partition when necessary. Usually, the System Reserved partition is 350MB in Windows 8 and 500MB for Windows 10. Since Windows 7, when you install Windows on a clean disk, a partition name System Reserved and about 100MB in size will be created at the beginning of the disk, and then the system drive and then other necessary drives. What is System Reserved partition and what is it used for?īefore learning the problem of System Reserved partition missing, you may need to know what the partition is and what the function of it is.
