Use Gmail Backup Tool is the most secure and effective solution that backup Gmail to a hard drive in various file formats such as PDF, PST, CSV, MBOX, HTML, EML, MSG, etc. It also migrates Gmail items to Office 365, Yahoo Mail, Hotmail, Thunderbird, iCloud, etc. Moreover, the software is also competent enough to backup Gmail, emails to the computer with entire mailbox items such as emails, contacts, calendars, etc. Users can save or backup emails without attachments in the migration process. Additionally, it supports all versions of the Windows operating system. You can try the trial versions of the software to analyze the performance. 

However,m if you want to save your Google Photos on a hard drive then here is the best article on how to backup google photos to external hard drive. This article will provide the most trusted manual solution to accomplish the process.