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Posted: **Thu Jun 14, 2007 6:34 am**

Hi again,

Here is my boot loader:

...See next post... It was obvious...

Thank you
Lster[/code]

Posted: **Thu Jun 14, 2007 6:55 am**

if you do the far jump to 32 bit protected mode the code after that point also has to be 32 bit. in the first scenario the code after setup_kernel is still 16 bit try adding BITS 32 before the setup_kernel: statement

Posted: **Thu Jun 14, 2007 7:10 am**

LOL. I must be really tired!

Thanks - and sorry - it was simple...
Lster

Posted: **Thu Jun 14, 2007 8:23 am**

...

Thank you lots,
Lster

Posted: **Thu Jun 14, 2007 8:27 am**

Posted: **Thu Jun 14, 2007 8:46 am**

didnt look too closely, but i did notice (not your problem) that you are not setting a RMode DS -- its likely to work on most computers, but wont work on some (nothing says DS must be 0 on boot -- and on some systems it isnt)

this isnt your problem, but it is something to keep in mind

Posted: **Thu Jun 14, 2007 8:50 am**

Thank you for the tip.

Posted: **Fri Jun 15, 2007 1:03 am**

No one got any idea?

I just can't see what's wrong

...

Posted: **Fri Jun 15, 2007 1:42 am**

I find the bios call rather suspicious:

Code: Select all

   mov      bx, 0x1000         ; Destination address
   mov      ah, 2            ; Function code
   mov      al, 50            ; Sectors to read
   mov      ch, 0            ; Cylinder?
   mov      cl, 2            ; Sector number
   mov      dh, 0            ; Head?
   int      0x13

first there are no safety checks in place (recommended with floppies)

edit: my maths were wrong

Posted: **Fri Jun 15, 2007 1:42 am**

...

Thanks for tips,
Lster

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