Get-MailboxDatabase -ID Telus | fl Name,edbFilePath,logFolderPath

Name : telus
EdbFilePath : D:\Mailbox\telus\telus.edb
LogFolderPath : D:\Mailbox\telus

Dismount-Database -Identity Telus -Confirm:$false

copy the database file and its log files to the new location.

xcopy D:\mailbox c:\ /E

Move-DatabasePath -Identity "Telus" -EdbFilePath "C:\Telus\Telus.edb" -LogFolderPath "C:\Telus" -ConfigurationOnly

Get-MailboxDatabase -ID Telus | fl Name,edbFilePath,logFolderPath

Name : telus
EdbFilePath : C:\Telus\Telus.edb
LogFolderPath : C:\Telus

Mount-Database -Identity Telus