{"id":"external-drives.does-a-hard-disk-spin-down-delay-opening-files","url":"/faq/external-drives/does-a-hard-disk-spin-down-delay-opening-files","category":{"id":"external-drives","title":"External drives"},"subcategory":{"id":"speed-and-hardware","title":"Speed, cables and hardware"},"question":"Why does it take a few seconds to open something from my external hard disk?","alt_questions":["External HDD slow to wake up","Delay opening moved folder on hard drive","Put hard disks to sleep when possible","spinning drive spin up delay mac","Moved files open slowly sometimes","external drive takes time to respond"],"short_answer":"Hard disks spin down when idle and take a few seconds to spin up again on first access. SSDs don't. You can change macOS's hard-disk sleep setting in System Settings, or use an SSD for frequently opened items.","answer_markdown":"A spinning hard disk powers down its motor when idle, and spinning back up takes a few seconds the first time something asks for a file. That's normal for hard disks and doesn't happen with SSDs.\n\nIf the delay bothers you, you can turn off **Put hard disks to sleep when possible** in System Settings (under Energy or Battery options, depending on your Mac), at the cost of a little more power use. For apps and folders you open often, an SSD avoids the delay entirely.","answer_html":"

A spinning hard disk powers down its motor when idle, and spinning back up takes a few seconds the first time something asks for a file. That's normal for hard disks and doesn't happen with SSDs.

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If the delay bothers you, you can turn off Put hard disks to sleep when possible in System Settings (under Energy or Battery options, depending on your Mac), at the cost of a little more power use. For apps and folders you open often, an SSD avoids the delay entirely.

","answer_text":"A spinning hard disk powers down its motor when idle, and spinning back up takes a few seconds the first time something asks for a file. That's normal for hard disks and doesn't happen with SSDs.\n\nIf the delay bothers you, you can turn off Put hard disks to sleep when possible in System Settings (under Energy or Battery options, depending on your Mac), at the cost of a little more power use. For apps and folders you open often, an SSD avoids the delay entirely.","tags":["hdd","sleep","delay"],"related":[{"id":"external-drives.does-my-mac-sleep-affect-the-fast-drive","question":"What happens to the fast drive when my Mac sleeps?","url":"/faq/external-drives/does-my-mac-sleep-affect-the-fast-drive"},{"id":"external-drives.should-i-plug-the-drive-into-a-hub-or-directly","question":"Should I plug my fast drive into a hub or dock, or directly into the Mac?","url":"/faq/external-drives/should-i-plug-the-drive-into-a-hub-or-directly"},{"id":"external-drives.does-the-cable-matter-for-an-external-ssd","question":"Does the cable matter for my external SSD's speed?","url":"/faq/external-drives/does-the-cable-matter-for-an-external-ssd"}],"applies_to":"all","last_reviewed":"2026-10-01","title":"Why does it take a few seconds to open something from my external hard disk? — Storage Studio FAQ","description":"Hard disks spin down when idle and take a few seconds to spin up again on first access. SSDs don't. You can change macOS's hard-disk sleep setting in System Settings, or use an SSD for frequently opened items.","crumbs":[{"name":"Home","path":"/"},{"name":"FAQ","path":"/faq/"},{"name":"External drives","path":"/faq/external-drives/"},{"name":"Why does it take a few seconds to open something from my external hard disk?","path":"/faq/external-drives/does-a-hard-disk-spin-down-delay-opening-files"}],"jsonld":{"@context":"https://schema.org","@type":"FAQPage","url":"https://storagestudio.us/faq/external-drives/does-a-hard-disk-spin-down-delay-opening-files","inLanguage":"en","dateModified":"2026-10-01","mainEntity":[{"@type":"Question","name":"Why does it take a few seconds to open something from my external hard disk?","alternateName":["External HDD slow to wake up","Delay opening moved folder on hard drive","Put hard disks to sleep when possible","spinning drive spin up delay mac","Moved files open slowly sometimes","external drive takes time to respond"],"acceptedAnswer":{"@type":"Answer","text":"A spinning hard disk powers down its motor when idle, and spinning back up takes a few seconds the first time something asks for a file. That's normal for hard disks and doesn't happen with SSDs.\n\nIf the delay bothers you, you can turn off Put hard disks to sleep when possible in System Settings (under Energy or Battery options, depending on your Mac), at the cost of a little more power use. For apps and folders you open often, an SSD avoids the delay entirely.","url":"https://storagestudio.us/faq/external-drives/does-a-hard-disk-spin-down-delay-opening-files"}}]},"fragment":"
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External drives · Speed, cables and hardware

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Why does it take a few seconds to open something from my external hard disk?

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Short answer: Hard disks spin down when idle and take a few seconds to spin up again on first access. SSDs don't. You can change macOS's hard-disk sleep setting in System Settings, or use an SSD for frequently opened items.

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A spinning hard disk powers down its motor when idle, and spinning back up takes a few seconds the first time something asks for a file. That's normal for hard disks and doesn't happen with SSDs.

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If the delay bothers you, you can turn off Put hard disks to sleep when possible in System Settings (under Energy or Battery options, depending on your Mac), at the cost of a little more power use. For apps and folders you open often, an SSD avoids the delay entirely.

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