How to safely remove drives from the computer

macOS – Safely Removing Drives

Step 1: Unmount the Volume

Method 1 – Finder:

• Locate the volume on your desktop or in Finder sidebar
• Right-click (or Control-click) on the volume
• Select ”Eject [volume name]”, or “Command – e” to eject.

Method 2 – SoftRAID:

• Open SoftRAID application
• Select the volume tile
• Go to Volume menu → Unmount

Step 2: Wait Before Disconnecting

Best practice: After unmounting, wait at least 1 minute (or until drive activity lights stop flashing) before powering off the enclosure, or disconnecting the cable. This allows:

• The drive to flush its internal cache to disk
• macOS to complete any final write operations
• The drive to finish any background tasks

Step 3: Physically Removing the Drive (if applicable)

If you need to physically remove a drive from an enclosure:

• Unmount the volume (Step 1)
• Wait at least 1 minute for the drive to spin down completely
• Power off the enclosure (or disconnect the cable)
• Unscrew the screw that secures the drive chassis into the enclosure
• Pull the drive out about 1 inch from the connector
• Wait another minute to ensure the drive has fully powered down
• You can now safely pull out the drive from the enclosure

Why this matters: Removing a spinning drive can cause the drive heads to make contact with the platters, potentially causing physical damage.

Windows – Safely Removing Drives

Step 1: Eject the Drive

Method 1 – System Tray:

• Click the ”Safely Remove Hardware” icon in the system tray (usually near the clock)
• You’ll see a list of removable devices currently connected
• Click on the device you want to remove
• Wait for Windows to confirm it’s safe to disconnect

Method 2 – File Explorer:

• Open File Explorer
• Right-click on the drive in the left sidebar
• Select ”Eject”

Step 2: Wait Before Disconnecting

Best practice: After ejecting, wait at least 1 minute (or until drive activity lights stop flashing) before powering off the enclosure or disconnecting the cable. This ensures:

• All cached data has been written to disk
• Windows has released all resources
• The drive has completed any background operations

If Windows won’t let you eject:

• Some application or Windows process is still using the drive
• Close all applications that might be accessing the drive
• If the problem persists, restart your computer
• Before doing anything else after restart, try ejecting again

Step 3: Physically Removing the Drive (if applicable)

If you need to physically remove a drive from an enclosure:

• Eject the drive (Step 1)
• Wait at least 1 minute for the drive to spin down completely
• Power off the enclosure (or disconnect the cable)
• Unscrew the drive from the enclosure (if mounted)
• Pull the drive out about 1 inch from the connector
• Wait another minute to ensure the drive has fully powered down
• You can now safely pull out the drive from the enclosure

Why this matters: Removing a spinning drive can cause the drive heads to make contact with the platters, potentially causing physical damage.

Best Practices Summary

Always:

• Unmount/eject volumes before disconnecting
• Wait for activity lights to stop flashing
• Wait at least 1 minute after unmounting before disconnecting cables
• Wait at least 1 minute for drives to spin down before physically removing from enclosures

Never:

• Unplug drives while they’re mounted
• Pull drives while activity lights are flashing
• Physically remove spinning drives from enclosures
• Force-disconnect drives if the OS says they’re still in use

Note: Hot-swap compatible enclosures (like ThunderBay and Mercury Elite Pro Quad) allow you to safely remove a drive while the enclosure remains powered on, as long as you unmount the volume and wait the appropriate time to ensure all data is written to disk. See our FAQ: How to hot swap a drive in a ThunderBay or Mercury Elite Pro Quad enclosure.

Following these steps protects both your data and your hardware.