I cannot remember if MBP 2010 uses EFI boot or classical GPT boot. Without Apple’s bootcamp (which installs legacy BIOS and allows booting via MBR), you will need an EFI bootable haiku system (see Haiku on UEFI). Alternatively, install REfit (install to boot partition) which can boot Haiku, or install Refit to USB flash and use it as boot manager to chainload Haiku on disk. The upcoming Beta may have EFI boot loader included.
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