create a volume on disk to install OS

from the GUI:

example Install the 11.5.1 HF4-ENG Software: a.Navigate to System ›› Software management ›› Hotfix list or image, depends on what your using for an image Note: The Hotfix install will install the base image, prior to the HF. b.Select Check box next to Hotfix image, click on install c.Select a disk HD1 and in the Volume set name field enter a 1 then click on install d.Click Install. Monitor the progress bar for Boot location MD1.1. this will create a volume md1.1 with the code image you selected

Hi,

you can use the following tmsh sytax:

install sys software image  create-volume volume 

See this: https://devcentral.f5.com/questions/v11-volume-management