{"id":"external-drives.eject-fails-files-still-in-use","url":"/faq/external-drives/eject-fails-files-still-in-use","category":{"id":"external-drives","title":"External drives"},"subcategory":{"id":"ejecting-and-reconnecting","title":"Ejecting and reconnecting"},"question":"Why does ejecting fail with \"Files still in use\"?","alt_questions":["Can't eject fast drive files in use","The disk wasn't ejected because one or more programs may be using it","Eject failed Storage Studio","What is using my external drive?","drive won't eject mac storage studio","How do I find which app is using my drive?"],"short_answer":"An app still has a file open on the drive. Storage Studio lists what's holding it — often a moved app, Xcode, Docker, a Terminal window in a folder on the drive, or Spotlight indexing. Quit those and eject again.","answer_markdown":"Something still has a file open on the drive. When an eject fails, Storage Studio lists the apps still using it so you know what to quit.\n\nCommon culprits:\n\n- An app you moved to the drive that's still open.\n- Xcode, Docker or another developer tool using files there.\n- A Terminal window whose current folder is on the drive.\n- Spotlight indexing the drive right after you connected it.\n\nQuit or move out of those, wait a moment, and click **Eject fast drive** again. Avoid pulling the cable while files are open.","answer_html":"

Something still has a file open on the drive. When an eject fails, Storage Studio lists the apps still using it so you know what to quit.

\n

Common culprits:

\n\n

Quit or move out of those, wait a moment, and click Eject fast drive again. Avoid pulling the cable while files are open.

","answer_text":"Something still has a file open on the drive. When an eject fails, Storage Studio lists the apps still using it so you know what to quit.\n\nCommon culprits:\n\n- An app you moved to the drive that's still open.\n- Xcode, Docker or another developer tool using files there.\n- A Terminal window whose current folder is on the drive.\n- Spotlight indexing the drive right after you connected it.\n\nQuit or move out of those, wait a moment, and click Eject fast drive again. Avoid pulling the cable while files are open.","tags":["eject","files in use","troubleshooting"],"related":[{"id":"external-drives.how-do-i-safely-eject-my-fast-drive","question":"How do I safely eject my fast drive?","url":"/faq/external-drives/how-do-i-safely-eject-my-fast-drive"},{"id":"external-drives.what-happens-if-i-unplug-without-ejecting","question":"What happens if I unplug the fast drive without ejecting it?","url":"/faq/external-drives/what-happens-if-i-unplug-without-ejecting"},{"id":"external-drives.how-do-i-remount-my-fast-drive","question":"How do I remount my fast drive if it didn't come back?","url":"/faq/external-drives/how-do-i-remount-my-fast-drive"}],"applies_to":"all","last_reviewed":"2026-10-01","title":"Why does ejecting fail with \"Files still in use\"? — Storage Studio FAQ","description":"An app still has a file open on the drive. Storage Studio lists what's holding it — often a moved app, Xcode, Docker, a Terminal window in a folder on the drive, or Spotlight indexing. Quit those and eject again.","crumbs":[{"name":"Home","path":"/"},{"name":"FAQ","path":"/faq/"},{"name":"External drives","path":"/faq/external-drives/"},{"name":"Why does ejecting fail with \"Files still in use\"?","path":"/faq/external-drives/eject-fails-files-still-in-use"}],"jsonld":{"@context":"https://schema.org","@type":"FAQPage","url":"https://storagestudio.us/faq/external-drives/eject-fails-files-still-in-use","inLanguage":"en","dateModified":"2026-10-01","mainEntity":[{"@type":"Question","name":"Why does ejecting fail with \"Files still in use\"?","alternateName":["Can't eject fast drive files in use","The disk wasn't ejected because one or more programs may be using it","Eject failed Storage Studio","What is using my external drive?","drive won't eject mac storage studio","How do I find which app is using my drive?"],"acceptedAnswer":{"@type":"Answer","text":"Something still has a file open on the drive. When an eject fails, Storage Studio lists the apps still using it so you know what to quit.\n\nCommon culprits:\n\n- An app you moved to the drive that's still open.\n- Xcode, Docker or another developer tool using files there.\n- A Terminal window whose current folder is on the drive.\n- Spotlight indexing the drive right after you connected it.\n\nQuit or move out of those, wait a moment, and click Eject fast drive again. Avoid pulling the cable while files are open.","url":"https://storagestudio.us/faq/external-drives/eject-fails-files-still-in-use"}}]},"fragment":"
\n
\n\n\n\n\n
\n
\n

External drives · Ejecting and reconnecting

\n

Why does ejecting fail with "Files still in use"?

\n

Short answer: An app still has a file open on the drive. Storage Studio lists what's holding it — often a moved app, Xcode, Docker, a Terminal window in a folder on the drive, or Spotlight indexing. Quit those and eject again.

\n

Something still has a file open on the drive. When an eject fails, Storage Studio lists the apps still using it so you know what to quit.

\n

Common culprits:

\n
  • An app you moved to the drive that's still open.
  • Xcode, Docker or another developer tool using files there.
  • A Terminal window whose current folder is on the drive.
  • Spotlight indexing the drive right after you connected it.
\n

Quit or move out of those, wait a moment, and click Eject fast drive again. Avoid pulling the cable while files are open.

\n\n

Last reviewed

\n\n

Related questions

\n

Also available as Markdown and JSON.

\n
"}