If you want to see which drives are mapped/mounted to your file-system you can use any of these commands:
The command to deal with mounting/mapping is net use
Using net use we can connect to other shared folder, on other systems. Many windows machines have a default-share called IPC (Interprocess communication share). It does not contain any files. But we can usually connect to it without authentication. This is called a null-session. Although the share does not contain any files it contains a lot of data that is useful for enumeration. The Linux-equivalent of net use is usually smbclient.
If you want to map a drive from another network to your filesystem you can do that like this:
Here you map the drive to the letter z. If the command is successful you should now be able to access those files by entering the z drive.
net users
# Add user
net user hacker my_password /add
net localgroup Administrator hacker /add
# Check if you are part of a domain
net localgroup /domain
# List all users in a domain
net users /domain
# This is the most thorough
wmic logicaldisk get deviceid, volumename, description
# But this works too
wmic logicaldisk get name
wmic logicaldisk get caption
# This can be slow. So don't kill your shell!
fsutil fsinfo drives
# With powershell
get-psdrive -psprovider filesystem
# This works too, but it is interacive. So it might be dangerous work hackers
diskpart
list volume
# Map only network drives
net use
net use \\IP address\IPC$ "" /u:""
net use \\192.168.1.101\IPC$ "" /u:""
# This will map it to drive z
net use z: \\192.168.1.101\SYSVOL
# This will map it to the first available drive-letter
net use * \\192.168.1.101\SYSVOL