How to load the kernel from bootloader?

[Solar]

*plonk* have you dared to smash your forehead onto the keyboard?

Traditionally, the sound it makes when a new entry is dropped into the killfile.

[bubach]

I think i know what he wants, but he just wont listen to us..
In the FAT12.. thread we have a bootsector that loads a second stage loader, and in that second stage loader it loads the kernel.. FFS... All the things he need!

[distantvoices]

vladaz, oh ye sinner, wilt thou forfeit some thoughts on that thing?

Nah, askin' questions is the eeeeasy way, but No, No, No, you will not get it spoon fed. I for one 've had to *learn* it by myself. It 'd have ashamed me to ask for info which can be researched.

*WHAM* (no, not early george michael thingses...)

[Pype.Clicker]

just a fact:
you don't need a file system to load a kernel ... if you wrote your kernel so that it start on sector X and is N sectors-wide, you just have to read sectors X through X+N using the BIOS so that they go to the kernel's favourite location.

[Vladaz]

Ok! I have the answer to my question, i think ;D .
I needed to load the kernel to memory from bootloader. One guy told me the manual about it. Thanks for help!

[Vladaz]

Hmm. Now i have another problem ??? .
I have two files: bootsec.bin and kernel.bin .
bootsec.bin load kernel.bin to memory and execute.
But when i copy bootsec.bin to my floppy disk by
partcopy bootsec.bin 0 200 -f0
and kernel.bin by
partcopy kernel.bin 200 200 -f0
, then my bootloader(bootsec.bin) doesn't boots on my emulator. But when i copy only bootsec.bin, then it writes "Booting Blablabla OS......".
So how i need to copy those two files into floppy to work my OS without any errors?

[Vladaz]

I forgot one more thing: bootsec.bin must be copied in first sector and kernel.bin in second sector of my floppy disk

[Neo]

and kernel.bin by
partcopy kernel.bin 200 200 -f0
, then my bootloader(bootsec.bin) doesn't boots on my emulator.

i think you want partcopy kernel.bin 0 200 -f0 200 to write the kernel to the second sector. you cant write the file from source_offset 0x200 as you have.
Read the partcopy documentation you have for further details.

[Solar]

That's the problem - he obviously doesn't like to do much reading himself. ::)

[Pype.Clicker]

alternatively, you can collate files together so that you'll do a single partcopy command:

Code: Select all

   copy /b bootsect.bin +kernel.bin allinone.bin
   partcopy whatever_relevant_options allinone.bin