$ sudo umount /dev/disk/by-id/google-DEVICE_NAME

POSITIONAL ARGUMENTS

INSTANCE_NAME

Name of the instance to operate on.

REQUIRED FLAGS

Exactly one of these must be specified:

--device-name=DEVICE_NAME

Specifies a disk to detach by its device name, which is the name that the guest operating system sees. The device name is set at the time that the disk is attached to the instance, and needs not be the same as the persistent disk name. If the disk's device name is specified, then its persistent disk name must not be specified using the --disk flag.

--disk=DISK

Specifies a disk to detach by its resource name. If you specify a disk to remove by persistent disk name, then you must not specify its device name using the --device-name flag.

OPTIONAL FLAGS

--zone=ZONE

Zone of the instance to operate on. If not specified, you may be prompted to select a zone. gcloud will attempt to identify the zone by searching for resources in your project. If the zone cannot be determined, you will then be prompted with all Google Cloud Platform zones.
To avoid prompting when this flag is omitted, you can set the compute/zone property:

$ gcloud config set compute/zone ZONE

A list of zones can be fetched by running:

$ gcloud compute zones list

To unset the property, run:

$ gcloud config unset compute/zone

Alternatively, the zone can be stored in the environment variable CLOUDSDK_COMPUTE_ZONE.

GCLOUD WIDE FLAGS

NOTES

$ gcloud alpha compute instances detach-disk $ gcloud beta compute instances detach-disk