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Hi all,
I have completed my primary bootloader long back and it worked fine. Now, when I was trying to run it in Bochs-2.1.1 in Intel Pentium III 651 MHz machine loaded with Windows XP, the directory structure is loaded at memory location 0x1FFD, instead of 0x2000. I have declared the address as macro, DIR_CPY. So, the primary loader couldn't find the secondary loader 'boot2.bin'. I have attached my boot loader code.

Any help greatly appreciated.

weirdo. I don't see anything that's obviously wrong. maybe you should set a breakpoint at 0x7c00 and execute step by step in BOCHS from there ...

Yes. I have traced the code already. Should I have to configure Bochs? Memory is configured to 32 Megs.

well, i see two plausible cause of error:
- an interrupt trash your register before you use it.
- somehow you damaged your code (code overwriting code, load errors or something wrong in the way you prepare the disk image) and the value of 2000 has become something else when you execute the "mov BX,imm" instruction ...

If i may ask, what makes you believe the directory is badly loaded ? it seems to works perfectly for me ...