Re: Problems with edd
From: H. Peter Anvin
Date: Tue Jun 10 2008 - 18:48:22 EST
devzero@xxxxxx wrote:
Hi all. I have a problem with trying to boot from a Fedora 9
installation CD-R. It works on another machine, so the disk
is OK. I guess if anyone knows the answer then it will be
found here on the kernel developers list.
When trying to boot from a CD-R installation disk, on my
Advent 6415 laptop I get the following:
Welcome to Fedora 9! [the installer splash screen]
I then click on either:
Install or upgrade an existing system
[or]
Install or upgrade an existing system (text mode)
[both give me the same following error]
Loading vmlinuz...........................................
..............
Loading initrd.img........................................
.................
...............ready.
Probing EDD (edd=off to disable)... ok
vmlinuz: attempted DOS system call
boot:
This message means something has invoked an interrupt in the range 0x20
to 0x3f, which it should never have done, since that's in the operating
system range.
Given the complaint about vesamenu further down the page, I'm assuming
the VESA BIOS is invoking a DOS interrupt(!!!!)... although it's very
hard to say for sure.
It might be possible to track down by augmenting syslinux to print the
CS:IP of the supposed DOS system call; if this is the VESA BIOS, it
would be in the range C000:xxxx.
This probably would be a useful hack anyway, so I'll just implement it.
-hpa
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