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Top Forums UNIX for Dummies Questions & Answers Problem with FreeBSD 8.3. BIOS affected Post 302844364 by prabux on Monday 19th of August 2013 05:23:28 AM
Old 08-19-2013
At start it offers: "F1- FreeBSD, F2- Windows ". If I press F2, it hangs forever. If I press F1 it boots normally and CDROM can be seen, when mounted. Boot sequence I can change, but CDROM cant be seen initialy and no boot comes from it.
What can I do?

---------- Post updated at 12:23 PM ---------- Previous update was at 11:09 AM ----------

More generally asking: Can BIOS be updated from within Unix? Is there such a practice?
 

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HYPER-V(4)						   BSD Kernel Interfaces Manual 						HYPER-V(4)

NAME
hv_ata_pci_disengage -- Hyper-V ATA PCI Disengage driver SYNOPSIS
To compile this driver into the kernel, place the following lines in the system kernel configuration file: device hyperv DESCRIPTION
The hv_ata_pci_disengage driver prevents the native FreeBSD ATA driver from loading in the presence of Hyper-V. FreeBSD guests running on Hyper-V can take advantage of the Hyper-V Storage Virtual Consumer (hv_storvsc(4)) for using their IDE devices. Since the ATA driver serves IDE devices as well, there is a chance that the ATA driver may interfere with the operations of hv_storvsc(4). The hv_ata_pci_disengage driver avoids conflicts between the ATA driver and hv_storvsc(4) by disabling the ATA driver when the FreeBSD guest is booting. A side effect of disabling the ATA driver is that CDROM may become inoperational on FreeBSD guest partitions. If CDROM access is a must then users may use "set hw.ata.disk_enable=1" at boot time to prevent the ATA driver from being disabled. SEE ALSO
hv_netvsc(4), hv_storvsc(4), hv_utils(4), hv_vmbus(4) HISTORY
Support for hv_ata_pci_disengage first appeared in FreeBSD 10.0. The driver was developed through a joint effort between Citrix Incorpo- rated, Microsoft Corporation, and Network Appliance Incorporated. AUTHORS
FreeBSD support for hv_ata_pci_disengage was first added by Microsoft BSD Integration Services Team <bsdic@microsoft.com>. BSD
September 10, 2013 BSD
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