To be able to utilize the F8 shortcut mentioned above, your boot image needs to have command support enabled (see pic below). The built-in default boot images (Boot Images (xXX)) already have command support enabled.
To be able to utilize the F8 shortcut mentioned above, your boot image needs to have command support enabled (see pic below). The built-in default boot images (Boot Images (xXX)) already have command support enabled.