How do I keep ransomware from wiping out my external backup drive? I use a DOS command to mount the backup drive. Then do the backup. Then another DOS command to dismount the drive. Is the drive safe from ransomware?

Mounting and dismounting a backup drive manually can offer some level of protection against ransomware attacks by ensuring the backup drive is disconnected when not actively backing up data. However, this method alone may not provide comprehensive protection. Ransomware can still potentially infect the backup drive when it is mounted and compromise the stored backup data.

To enhance the safety of backups from ransomware attacks, it is recommended to implement a multi-layered approach:

1. Automated Backup Systems: Use backup software that automates the backup process on a regular schedule. This can help minimize the window of vulnerability where the backup drive is mounted.

2. Offline and Offsite Backups: In addition to regular backups to a local drive, maintain offline backups on physical media like external hard drives or tapes that are disconnected from the network when not in use. Also, consider storing backups offsite in a secure location or on a cloud service.

3. Encryption: Encrypting backup data can add an extra layer of security in case the backup drive is compromised.

4. Access Controls: Limit access to backup files to authorized users only to prevent unauthorized modifications or deletions.

5. Regular Testing: Periodically test the backup and restore process to ensure that backups are functioning correctly and can be restored in case of a ransomware attack.

By combining these approaches, you can significantly improve the protection of your backups against ransomware attacks.