.
(specifically, HP's Pavilion P6-2310)
Excerpted from http://distrowatch.com/weekly.php?issue=20121126#news
Boot machine while pressing F10
Find Secure Boot in the menu tree, ignore warnings
Disable Secure Boot feature
Enable legacy boot options
Enable specific legacy devices, such as USB devices
Save and reboot while holding down F9
If this doesn't work for your device, refer to Jesse Smith's article for clues.
Also, post your solution if some other scheme works for you.
Vintage DEC/CLEARPOINT INC. -QRAM-2 SAB-1 1MB Q-BUS MEMORY MSV11-QA (B2)
$129.99
VINTAGE DEC Digital RK11-D DISK CONTROL M7255 PDP 11 (B1)
$129.99
DEC PDP 8/M PDP 8M / 4 avail / Vintage Digital Equipment Corp /Also DEC PDP 12
$5775.00
DEC DIGITAL Equipment Corp VT220-D2 Vintage CRT Terminal
$215.00
10x Rare Vintage DEC 12-22246-01 VAX BI TRANSITION HEADER ALL 3 BLOCKS INSTALLED
$209.98
Vintage DEC Digital Equipment VT100 Keyboard 70-14653-11 Missing Key Caps
$103.20
Vintage DEC / DIGITAL CLEARPOINT INC COMPUTER BOARD QRAM-11 QBUS Memory PQ
$109.00
$47.00
Vintage DEC/The Redac mini cabinet front panel Digital Equipment Corp. 19"
$269.99
VINTAGE DEC Digital DV11 DISTRIBUTION PANEL 5411153
$189.99