.
(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.
HPE BL460c G9 ProLiant Blade | 2x Xeon E5-2620V3 | NO RAM | P244BR | 2xHDD Tray
$179.00
CISCO UCSB-B200-M4 UCS BLADE SERVER UCS-SP-B200M4-S1
$175.00
HPE BL460c G9 ProLiant Blade | 2x Xeon E5-2630V3 | 32GB | P244BR | 2x300GB 15K
$299.00
Dell PowerEdge FX2 FX2S Enclosure - 4x PowerEdge FC640 w/ 8x Gold 6132 112C 1TB
$2699.99
Dell PowerEdge M640 Barebone Server Blade No Hard Drive Trays
$499.00
HPE 863442-B21 ProLiant BL460c G10 Blade (2) Intel Xeon Silver CPUs NO HD/NO RAM
$199.00
HP ProLiant BL460c G9 (Gen9) 2x E5-2670V3 12 Core 3.1GHz No Ram or No Drives
$59.98
HPE ProLiant BL460c Gen9 16-Core Blade 779803-S01 (2)CPU on board No RAM/No HDD
$39.99
HP P17342-B21 M750 E2286M CTO BLADE SERVER
$329.95
Dell PowerEdge FX2s CTO Blade 4 Slot 2U Chassis 2x 2000W
$399.00