ad0: READ command timeout upon boot installation

[cwyman]

We are trying to install FBSD 4.9 from diskette to a brand new HP Proliant Server and upon boot up we get to

ad0: READ Command timeout tag=0 serv=0 - resetting
ata0: resetting devices ..

Then it hangs

Looking through the Internet we believe it may be a chipset issue. Any words of wisdom are welcome.

 

[Wishdiak]

cwyman,

Not having encountered this problem myself, I'd say some possible causes are: Outdated BIOS, incorrectly geometry in CMOS settings, improperly cabled HD, bad MBR on the drive.

I'd replace the HD and replace the IDE cable with an 80-pin IDE. Set the CMOS to autodetect the drive, run the BSD install and partition and format using the BSD install. That eliminates everything but the BIOS.

But that's just me.



Wishdiak

http://www.wishdiak.com

 

[cwyman]

I found the answer.

We had to enter this command and then place it in the config file.

Try to add/append hw.ata.ata_dma="0" to /boot/loader.conf and see if that error goes away.

Now I have a new problem which I will post in a new thread.

Thanks for your help.

 

[ianicr]

I got a similar error on my ProLiant server when loading with 5.2.1, to solve it I had to disable ACPI. Don't know if this'll help you.