---
id: external-drives.does-filevault-encrypt-my-external-drive
url: https://storagestudio.us/faq/external-drives/does-filevault-encrypt-my-external-drive
category: "External drives"
subcategory: "Drive formats"
question: "Does FileVault encrypt my external fast drive too?"
alt_questions:
  - "Is my external drive encrypted with FileVault?"
  - "FileVault external SSD"
  - "Are moved files still encrypted on the external drive?"
  - "encrypt fast drive like filevault"
  - "Security of files moved off my Mac"
  - "Moved files protected by FileVault?"
short_answer: "No — FileVault only covers your internal disk. Files moved to an external drive are protected only if that drive is encrypted, so encrypt it in Finder (right-click → Encrypt) or erase it as APFS (Encrypted)."
tags: ["filevault", "encryption", "security"]
related: ["https://storagestudio.us/faq/external-drives/does-storage-studio-work-with-an-encrypted-external-drive", "https://storagestudio.us/faq/external-drives/what-format-should-my-external-drive-be", "https://storagestudio.us/faq/external-drives/why-is-exfat-only-usable-with-warnings"]
applies_to: "all"
last_reviewed: 2026-10-01
---

# Does FileVault encrypt my external fast drive too?

No. FileVault encrypts your Mac's internal startup disk only. Files you move to an external drive are protected by that drive's own encryption — so if the drive isn't encrypted, anyone who plugs it in can read it.

If your moved folders hold anything sensitive, encrypt the drive: in Finder, right-click it and choose **Encrypt**, or erase it as **APFS (Encrypted)** in Disk Utility. Storage Studio works the same with an encrypted drive once it's unlocked.