Install to external (I think) SSD

[Ralf Mardorf]

On Sat, 29 Jul 2017 17:45:18 +0200, Xen wrote:
>- the installation does not touch the original HDD.
>- the boot menu is installed only on the SSD.

But if the HDD shouldn't be disconnected, the installer much likely
writes grub to the HDD and might damage the iBook's boot loader, so
it's important to disconnect the HDD and later to generate a GRUB menu
with the required chainloader.

>- the boot menu is activated only when the SSD is made the boot device.
>- this can either be fixed or chosen using the F10/F12/Esc menu.
>- if the original HDD is selected, Windows boots as normal with no 
>modifications whatsoever.