
By giving the volume letter, it will unhide the System Reserved Partition and show it in your file explorer just like other volumes.

If you want to view the files/content of this particular partition in your system, then you need to give this partition a volume letter by using different methods. How to view the Contents of System Reserved Partition? Windows 7 will have 100MB, Windows 8/8.1 will have 350MB, and Windows 10 will have a 500MB System Reserved Partition. The partition size varies on different Operating Systems. Your system boots the unencrypted System Reserved Partition and then decrypts the main encrypted drive and starts the encrypted Windows system.

If you ever decide to encrypt your hard drive with BitLocker drive encryption, then System Reserved partition contains all the necessary files for starting your computer without any issues.

Your system starts the boot loader from the System Reserved partition, which then starts Windows Operating System from our system drive. When the computer starts, the Windows Boot Manager reads the boot data from the Boot Configuration Data Store.
