---
id: comparisons.disk-image-vs-plain-folder-for-archives
url: https://storagestudio.us/faq/comparisons/disk-image-vs-plain-folder-for-archives
category: "Comparisons & alternatives"
subcategory: "Files, links and archive formats"
question: "Should I archive old files in a disk image or as plain folders on my external drive?"
alt_questions:
  - "dmg vs folder for archiving on Mac"
  - "should I put old projects in an encrypted disk image"
  - "sparse bundle vs folder for backups"
  - "best format to archive files on external drive"
  - "archive folders or disk image which is better"
short_answer: "Plain folders are easier to browse, search and copy from; a disk image makes sense when you want the archive encrypted or sealed as one item. Either way, keep a second copy elsewhere."
tags: ["archive", "disk image", "external drive"]
related: ["https://storagestudio.us/faq/comparisons/zipping-old-folders-vs-moving-them", "https://storagestudio.us/faq/comparisons/ssd-or-hard-drive-for-long-term-archives"]
applies_to: "all"
last_reviewed: 2026-10-01
---

# Should I archive old files in a disk image or as plain folders on my external drive?

Plain folders are simpler for most archives; a disk image is worth it mainly when you want the archive encrypted or kept as one sealed item.

- **Plain folders** — open from any Mac, searchable with Spotlight, easy to copy a single file out of, and Storage Studio can move or back them up like any other folder.
- **Disk image** — one file you mount to use. Disk Utility can encrypt it with a password, which is handy for sensitive material on a drive you carry around. But it must be mounted to read anything, and damage to the image can affect everything inside it.

Whichever you choose, keep a second copy somewhere else — an archive on one drive is still a single copy. See [moving vs zipping old folders](https://storagestudio.us/faq/comparisons/zipping-old-folders-vs-moving-them).