---
id: freeing-space.why-keep-undo-records-on-my-mac
url: https://storagestudio.us/faq/freeing-space/why-keep-undo-records-on-my-mac
category: "Freeing up space"
subcategory: "Temporary files and Storage Studio's own footprint"
question: "Why does Storage Studio keep its undo records on my Mac instead of the external drive?"
alt_questions:
  - "Why are Storage Studio's records not on the fast drive?"
  - "Can I delete Storage Studio's move records?"
  - "Irreplaceable records Storage Studio"
  - "Undo without the external drive"
  - "Move history storage location"
short_answer: "So undo keeps working when the fast drive is away. The records are small and never offered for removal; older safety copies of them are moved to your fast drive when it's connected."
tags: ["footprint", "undo", "records"]
related: ["https://storagestudio.us/faq/freeing-space/does-storage-studio-use-much-disk-space-itself"]
applies_to: "all"
last_reviewed: 2026-10-01
---

# Why does Storage Studio keep its undo records on my Mac instead of the external drive?

So that undoing a move still works when the fast drive isn't there. These are the small records of what was moved and where; without them, Storage Studio couldn't reliably put things back. They're never offered for removal.

They're tiny compared with what they let you recover. What can grow — older safety copies of those records — is relocated to your fast drive when one is available, so it isn't sitting on the drive you're trying to free up. See [How much space does Storage Studio use?](https://storagestudio.us/faq/freeing-space/does-storage-studio-use-much-disk-space-itself)