Grub 2 can be configured to play a tune when the Grub menu appears. At that
point, you would need to know the correct keyboard commands to select the
desired OS, as speech (and braille, for that matter, but you asked about
speech) is not available prior to the loading of the kernel.
I would suggest installing Grub 2 to your USB device, and setting up the
order of operating systems in the Grub menu according to your preferences.
-----Original Message-----
From: Blind-sysadmins
[mailto:blind-sysadmins-bounces@lists.hodgsonfamily.org] On Behalf Of David
Mehler
Sent: Tuesday, August 22, 2017 3:10 PM
To: blind-sysadmins