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Detaches an Amazon EBS volume from an instance. Make sure to unmount any file systems on the device within your operating system before detaching the volume. Failure to do so will result in volume being stuck in "busy" state while detaching. For more information about Amazon EBS, go to Using Amazon Elastic Block Store in the Amazon Elastic Compute Cloud User Guide.
![]() | Note |
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If an Amazon EBS volume is the root device of an instance, it cannot be detached while the instance is in the "running" state. To detach the root volume, stop the instance first. |
| Name | Description | Required |
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The ID of the volume. Type: String Default: None |
Yes |
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The ID of the instance. Type: String Default: None |
No |
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The device name. Type: String Default: None |
No |
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Forces detachment if the previous detachment attempt did not occur cleanly (logging into an instance, unmounting the volume, and detaching normally). This option can lead to data loss or a corrupted file system. Use this option only as a last resort to detach a volume from a failed instance. The instance will not have an opportunity to flush file system caches or file system metadata. If you use this option, you must perform file system check and repair procedures. Type: Boolean Default: None |
No |
The elements in the following table are wrapped in a
DetachVolumeResponse structure.
| Name | Description |
|---|---|
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The ID of the request. Type: xsd:string |
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The ID of the volume. Type: xsd:string |
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The ID of the instance. Type: xsd:string |
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The device as it is exposed to the instance. Type: xsd:string |
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Attachment state. Type: xsd:string Valid Values: |
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Time stamp when the attachment initiated. Type: xsd:dateTime |
This example detaches volume vol-4d826724.
https://ec2.amazonaws.com/?Action=DetachVolume &VolumeId=vol-4d826724 &InstanceId=i-6058a509 &AUTHPARAMS
<DetachVolumeResponse xmlns="http://ec2.amazonaws.com/doc/2011-12-15/"> <requestId>59dbff89-35bd-4eac-99ed-be587EXAMPLE</requestId> <volumeId>vol-4d826724</volumeId> <instanceId>i-6058a509</instanceId> <device>/dev/sdh</device> <status>detaching</status> <attachTime>2008-05-08T11:51:50.000Z</attachTime> </DetachVolumeResponse>