stackoverflow November 9, 2025 Rep: 61

nasm bios int 13h read sector issue

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November 9, 2025 Score: 4 Rep: 471 Quality: Medium Completeness: 40%

You overwrote AX register when doing mov ax, 0x0000 so AH and AL don't have proper values when calling int 13h.

(8-bit AH and AL registers are high and low bytes of 16-bit AX register)

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