USB boot order: BIOS or USB issue ?

Assembled cognoscenti; I have a Asus-M4A79XTD_EVO mother board with an AMD 3.4GHz Phenom x4 965CPU and 16GB of Ram; with a AMI BIOS ver 2102 (which I suspect is more relevant) !. The problem is when I install a USB composite card reader (4 devices) it grabs all the BIOS USB 'boot options' (about 4 devices apparently) and whilst a USB FDD, (which I wish to access at boot time ) is obviously visible to the BIOS( it is the 5th device); it is not available at boot time. If I remove the card reader the FDD becomes available. Not having much luck googling " BIOS USB boot order"; just finding help with ordering BIOS boot devices; which is not the essential problem Question: Is USB BIOS boot order: 1/ just a matter of the specific BIOS firmware, or 2/ related to the USB port number (ie the plug) or 3/ somehow intrinsic to the set of USB devices ? 4/ something else ? regards Rohan McLeod

On Thu, 5 Jun 2014 10:36:23 Rohan McLeod wrote:
Question: Is USB BIOS boot order: 1/ just a matter of the specific BIOS firmware, or 2/ related to the USB port number (ie the plug) or 3/ somehow intrinsic to the set of USB devices ?
The BIOS may do whatever it wants, it could sort by USB device ID or something but it could be related to the port number. Try putting the devices in different ports and see what happens. -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/

Russell Coker wrote:
On Thu, 5 Jun 2014 10:36:23 Rohan McLeod wrote:
Question: Is USB BIOS boot order: 1/ just a matter of the specific BIOS firmware, or
2/ related to the USB port number (ie the plug) or
3/ somehow intrinsic to the set of USB devices ?
The BIOS may do whatever it wants, it could sort by USB device ID or something but it could be related to the port number.
Try putting the devices in different ports and see what happens.
Thanks for replying Russell; as someone with extensive experience; I will conclude no definite answer exists to my questions and as suggested try , different ports ; regards Rohan McLeod
participants (2)
-
Rohan McLeod
-
Russell Coker