In this example, the source boot environment is named c0t4d0s0. The root (/) file system is copied to the new boot environment. Also, a new swap slice is created rather than sharing the source boot environment's swap slice.
Display the character interface:
From the main menu, select Create.
Name of Current Boot Environment: c0t4d0s0 Name of New Boot Environment: c0t15d0s0
From the Configuration menu, press F2 to display the Choices menu.
Choose slice 0 from disk c0t15d0 for root (/).
From the configuration menu, create a new slice for swap on c0t15d0 by selecting a swap slice to be split.
Press F2 to display the Choices menu.
Select slice 1 from disk c0t15d0 for the new swap slice.
Press F3 to create the new boot environment.