ヒント

外付けドライブを使いこなすためのヒントと解決策

カードやドライブのやりくりにまつわる悩みに、実用的な答えを。

• “Disk Not Ejected Properly” on Mac: why it happens and how to stop it

  What the macOS “Disk Not Ejected Properly” warning really means, whether your data is at risk, why it happens overnight, and how to find the app holding your drive.

• Which app is using my drive? Finding what blocks eject on a Mac

  macOS says the disk couldn't be ejected because a program is using it — but never says which one. Three ways to find the culprit, from Terminal to one click, and how to force-eject safely.

• SD card won't show up — or won't eject? The Mac checklist

  A working checklist for SD cards on macOS: card not mounting, not visible in Finder, read-only, or refusing to eject after import — in the order worth trying.