what is wrong with this?

[Mordeth]

I am making a simple bootstrap in NASM and in almost all the tutorials I see, it declares a word-sized variable that holds the bootstrap signature but with no label. For example, it declares "dw AA55h" instead of something like "bootsig dw AA55h". Anyway, I did exactly as the tutorial explained and put a plain "dw AA55h" at the end but when I assemble it, it gives me an error saying "undefined symbol 'AA55h'". Can anyone help me with this problem? I am kinda new to assembly. Thanks!

[Qubit]

AA55 is the magic number for the Bios. Did you make sure it's at byte 510? Also, remember that bootsectors don't have a header. (It can be a mess to get the compiler to compile it as a header-less file, so I suppose you better strip the headers and the unneeded sections and manually insert a 'AA55' at 510 with a hex editor)

[Mordeth]

nevermind I got it. Thanks for replying though :)

[Qubit]

NP at all, now that I looked again, I noticed that nasm also compiles plain binary files, which I didn't know :)