BTX Halted

Tim Judd tajudd at
Tue Oct 6 15:36:15 UTC 2009

On 10/6/09, Tseveendorj Ochirlantuu <tseveendorj at> wrote:
> Dear all,
> I've found something strange I have never seen before. When start booting
> FreeBSD 7.2 amd64 from ISO image in ESX 4.0 then error occurs. You can see
> it from snapshot.
> I have following.
> Dell R900 with 4 CPU, 64GB RAM
> ESX 4.0 installed on R900
> FreeBSD 7.2 amd64
> What is this mean?
> Best regards,
> Tseveen.

BTX - BooT eXtender, the process of moving from 16-bit real mode to
32-bit (or 64-bit?) protected mode.  The system was unable to do this
conversion.  Happens on buggy "chipsets" (in quotes because this is on
ESX).  Go back to VM properties and double, triple check everything,
go into the BIOS and disable any "window-isms" like PnP OS, power
management, etc.

You might have a corrupt download, check your MD5/SHA1 and redownload
if applicable.


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