How to Safely Hot-Swap HDDs (Do It Right and Avoid Hardware Damage)

Wed, 01 Jan 2025 00:00:00 +0000

Prerequisite: Hardware Must Support Hot Swap

First confirm your drive backplane/controller and platform support hot swap. This is the basic requirement.

Using ASUS as an example:

Press F2 or DEL during boot to enter BIOS.
Switch to Advanced Mode.
Go to Advanced -> PCH Storage Configuration, find the target SATA port, and set Hot Plug to Enabled.
Press F10 to save and exit.

After this, hot-swap should be available. Other motherboard brands provide similar options.

Stop I/O activity on the target drive.
Unmount the file system (for example umount /dev/sda).
If using LVM, deactivate the volume group (for example vgchange -an).
Put the disk into standby (for example sudo hdparm -Y /dev/sda).
Remove the device from the OS (echo 1 | sudo tee /sys/block/sda/device/delete). After this command, verify the disk has fully stopped spinning before unplugging power/data. Pulling a still-spinning HDD can damage the head/platter assembly.
Once the above steps are completed, unplug the drive.