Booting win98 from an extended partition

[Ingo Korb]

Hi!

I'm trying to use GRUB 0.5.96.1 to boot Win98SE from an extended partition 
(drive G: in win98, /dev/sda7 in linux), but the boot loader just gives the 
standard "invalid system" message. Booting the same partition works fine 
with the OS/2 boot manager.

I tried looking at the source, but I don't see any differences in the 
(intended) register contents when GRUB chainloads a boot sector compared to 
a standard MBR?
Read 'Ya Somewhere... Ingo Korb