Running cmd.exe as an admin will give you the elevated privileges to view another user's folder in most instances. "chkdisk" is for checking file system integrity and does not directly deal with file permissions. "chmod" is a Linux tool and will not work on Windows systems. "dir" is used to display the contents of a directory, not change the working directory.
User Account Control (UAC) is a mandatory access control enforcement facility introduced with Microsoft's Windows Vista and Windows Server 2008 operating systems, with a more relaxed version also present in Windows 7, Windows Server 2008 R2, Windows 8, Windows Server 2012 and Windows 10 It aims to improve the security of Microsoft Windows by limiting application software to standard user privileges until an administrator authorizes an increase or elevation In this way, only applications trusted by the user may receive administrative privileges, and malware should be kept from compromising the operating system In other words, a user account may have administrator privileges assigned to it, but applications that the user runs do not inherit those privileges unless they are approved beforehand or the user explicitly authorizes it