---
id: external-drives.does-storage-studio-format-or-erase-my-drive
url: https://storagestudio.us/faq/external-drives/does-storage-studio-format-or-erase-my-drive
category: "External drives"
subcategory: "Drive formats"
question: "Does setting up a drive in Storage Studio erase what is already on it?"
alt_questions:
  - "Will Storage Studio wipe my SSD?"
  - "Is it safe to set up a drive that already has files?"
  - "Does Choose Drive erase the disk?"
  - "Do I lose my existing files when I pick a drive?"
short_answer: "No. Setting up a drive only adds a small Storage Studio folder and a tag so the app can recognise it; existing files are untouched. If the drive needs reformatting, you do that yourself in Disk Utility."
tags: ["erase", "format", "setup", "safety"]
related: ["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", "https://storagestudio.us/faq/external-drives/why-cant-i-use-a-fat32-drive"]
applies_to: "all"
last_reviewed: 2026-10-01
---

# Does setting up a drive in Storage Studio erase what is already on it?

No. Storage Studio never formats or erases a drive. Setting a drive up just adds a small Storage Studio folder and tags the drive so the app can recognise it later — everything already on the drive stays exactly where it is.

If your drive needs a different format (for example it's FAT32 or NTFS), you erase it yourself in Disk Utility, after backing up anything on it. The same goes for Transfer Drive and Backup Drive: they only add data to the new drive and never change your current one.