{"id":"mac-storage-basics.what-does-your-disk-is-almost-full-mean","url":"/faq/mac-storage-basics/what-does-your-disk-is-almost-full-mean","category":{"id":"mac-storage-basics","title":"Mac storage basics"},"subcategory":{"id":"full-disk","title":"When the disk is full"},"question":"What should I do when my Mac says \"Your disk is almost full\"?","alt_questions":["your startup disk is almost full","mac disk almost full warning","startup disk full what to do","save space by optimising storage message","disk full notification mac"],"short_answer":"Your startup disk is nearly full. Empty the Trash, clear big downloads and old backups, release snapshots, and move big folders or apps to an external drive.","answer_markdown":"It means your startup disk is close to running out of room. Act soon, because a full disk causes failed saves, crashes and failed updates.\n\nQuick wins, roughly in order:\n\n1. Empty the Trash and Photos' Recently Deleted album.\n2. Delete installers, disk images and other big files in Downloads.\n3. Remove old iPhone backups and unused large apps.\n4. Release local snapshots if you've recently deleted a lot.\n5. Move big folders, libraries or apps to an external drive.\n\nStorage Studio's **Emergency Space** screen picks the smallest, safest set of actions to reach the amount you need and never deletes anything without asking. See [freeing up space](/faq/freeing-space/).","answer_html":"

It means your startup disk is close to running out of room. Act soon, because a full disk causes failed saves, crashes and failed updates.

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Quick wins, roughly in order:

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  1. Empty the Trash and Photos' Recently Deleted album.
  2. Delete installers, disk images and other big files in Downloads.
  3. Remove old iPhone backups and unused large apps.
  4. Release local snapshots if you've recently deleted a lot.
  5. Move big folders, libraries or apps to an external drive.
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Storage Studio's Emergency Space screen picks the smallest, safest set of actions to reach the amount you need and never deletes anything without asking. See freeing up space.

","answer_text":"It means your startup disk is close to running out of room. Act soon, because a full disk causes failed saves, crashes and failed updates.\n\nQuick wins, roughly in order:\n\n1. Empty the Trash and Photos' Recently Deleted album.\n2. Delete installers, disk images and other big files in Downloads.\n3. Remove old iPhone backups and unused large apps.\n4. Release local snapshots if you've recently deleted a lot.\n5. Move big folders, libraries or apps to an external drive.\n\nStorage Studio's Emergency Space screen picks the smallest, safest set of actions to reach the amount you need and never deletes anything without asking. See freeing up space.","tags":["startup disk full","warning","free space"],"related":[{"id":"mac-storage-basics.what-happens-when-a-mac-runs-out-of-disk-space","question":"What happens if my Mac completely runs out of disk space?","url":"/faq/mac-storage-basics/what-happens-when-a-mac-runs-out-of-disk-space"},{"id":"mac-storage-basics.how-much-free-space-should-i-keep-on-a-mac","question":"How much free space should I keep on my Mac?","url":"/faq/mac-storage-basics/how-much-free-space-should-i-keep-on-a-mac"}],"applies_to":"all","last_reviewed":"2026-10-01","title":"What should I do when my Mac says \"Your disk is almost full\"? — Storage Studio FAQ","description":"Your startup disk is nearly full. Empty the Trash, clear big downloads and old backups, release snapshots, and move big folders or apps to an external drive.","crumbs":[{"name":"Home","path":"/"},{"name":"FAQ","path":"/faq/"},{"name":"Mac storage basics","path":"/faq/mac-storage-basics/"},{"name":"What should I do when my Mac says \"Your disk is almost full\"?","path":"/faq/mac-storage-basics/what-does-your-disk-is-almost-full-mean"}],"jsonld":{"@context":"https://schema.org","@type":"FAQPage","url":"https://storagestudio.us/faq/mac-storage-basics/what-does-your-disk-is-almost-full-mean","inLanguage":"en","dateModified":"2026-10-01","mainEntity":[{"@type":"Question","name":"What should I do when my Mac says \"Your disk is almost full\"?","alternateName":["your startup disk is almost full","mac disk almost full warning","startup disk full what to do","save space by optimising storage message","disk full notification mac"],"acceptedAnswer":{"@type":"Answer","text":"It means your startup disk is close to running out of room. Act soon, because a full disk causes failed saves, crashes and failed updates.\n\nQuick wins, roughly in order:\n\n1. Empty the Trash and Photos' Recently Deleted album.\n2. Delete installers, disk images and other big files in Downloads.\n3. Remove old iPhone backups and unused large apps.\n4. Release local snapshots if you've recently deleted a lot.\n5. Move big folders, libraries or apps to an external drive.\n\nStorage Studio's Emergency Space screen picks the smallest, safest set of actions to reach the amount you need and never deletes anything without asking. See freeing up space.","url":"https://storagestudio.us/faq/mac-storage-basics/what-does-your-disk-is-almost-full-mean"}}]},"fragment":"
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Mac storage basics · When the disk is full

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What should I do when my Mac says "Your disk is almost full"?

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Short answer: Your startup disk is nearly full. Empty the Trash, clear big downloads and old backups, release snapshots, and move big folders or apps to an external drive.

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It means your startup disk is close to running out of room. Act soon, because a full disk causes failed saves, crashes and failed updates.

\n

Quick wins, roughly in order:

\n
  1. Empty the Trash and Photos' Recently Deleted album.
  2. Delete installers, disk images and other big files in Downloads.
  3. Remove old iPhone backups and unused large apps.
  4. Release local snapshots if you've recently deleted a lot.
  5. Move big folders, libraries or apps to an external drive.
\n

Storage Studio's Emergency Space screen picks the smallest, safest set of actions to reach the amount you need and never deletes anything without asking. See freeing up space.

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Last reviewed

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Related questions

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