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8

Safely removing eSATA disks

rated 0 times [ 8] [ 0] / answers: 1 / hits: 2170 / 3 Years ago, wed, may 12, 2021, 6:35:34

Is there any way to safely remove any external disk connected via eSATA?
Disks make an ugly noise when unplugged, even if there are no mounted partitions...
I found somewhere this little command:

sdparm --flexible --command=stop /dev/sdb &>/dev/null

It seems to shutdown the disk. But just when it powers off, it starts working again...
Any clue?

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answered 3 Years ago lasagnerhead · Accepted Answer

Try echo 1 > /sys/block/<disk>/device/delete. You'll need to be root to do this.

On my system, this powers off the eSATA disk and deallocates its block device. The disk stays powered off and I can disconnect it at my leisure.

Note: make sure you have unmounted any filesystems first to prevent data loss!