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I was also looking for a Samsung Master Password And found a solution at http://samsung-bios-password.biospwd.com/ it worked for me maybe it will work for you too.

samsung hdd password for samsung laptop will depend on their model:

some samsung models are:

NP530U3C | NP530U3C-A05US

NP530U3C | NP530U3C-A06US

NP530U3C | NP530U3C-A07US

NP530U4BI | NP530U4B-A01US

NP530U4BI | NP530U4B-A02US

NP530U4BI | NP530U4B-A03US

NP530U4C | NP530U4C-A01US

NP535U3C | NP535U3C-A01US

NP535U3C | NP535U3C-B01US

NP535U4C | NP535U4C-A01US

NP540U3C | NP540U3C-A01UB

NP540U3C | NP540U3C-A01US

NP540U3C | NP540U3C-A02UB

NP540U3C | NP540U3C-A03UB

NP540U4E | NP540U4E-K01US

NP550P5C | NP550P5C-A01UB

NP550P5C | NP550P5C-A01US

NP550P5C | NP550P5C-A02UB

NP550P5C | NP550P5C-A02US

NP550P5C | NP550P5C-S02US

NP550P5C | NP550P5C-T01US

NP680Z5E | NP680Z5E-X01US

NP680Z5E | NP680Z5E-X02US

NP700G7C | NP700G7C-S01US

NP700G7C | NP700G7C-S02US

NP700G7C | NP700G7C-T01US

NP700Z3AH | NP700Z3A-S01US

NP700Z3AH | NP700Z3A-S03US

NP700Z3AH | NP700Z3A-S06US

NP700Z3AH | NP700Z3A-S07US

NP700Z3CH | NP700Z3C-S01US

NP700Z3CH | NP700Z3C-S02US

NP700Z5AH | NP700Z5A-S01US

NP700Z5AH | NP700Z5A-S02US

NP700Z5AH | NP700Z5A-S03US

NP700Z5AH | NP700Z5A-S04US

NP700Z5AH | NP700Z5A-S09US

NP700Z5AH | NP700Z5A-S0AUS

NP700Z5AH | NP700Z5A-S0BUS

NP700Z5BH | NP700Z5B-S01UB

NP700Z5BH | NP700Z5B-W01UB

NP700Z5CH | NP700Z5C-S01UB

NP700Z5CH | NP700Z5C-S01US

NP700Z5CH | NP700Z5C-S02UB

NP700Z5CH | NP700Z5C-S04US

NP700Z7CH | NP700Z7C-S01UB

NP700Z7CH | NP700Z7C-S01US

NP700Z7CH | NP700Z7C-S03US

NP740U3E | NP740U3E-A01UB

NP740U3E | NP740U3E-K01UB

NP770Z7E | NP770Z7E-S01UB

NP780Z5E | NP780Z5E-S01UB

NP900X1A | NP900X1A-A01US

NP900X1B | NP900X1B-A01US

NP900X1B | NP900X1B-A02US

NP900X3A | NP900X3A-A03US

NP900X3A | NP900X3A-A05US

NP900X3A | NP900X3A-B01UB

NP900X3A | NP900X3A-B01US

NP900X3A | NP900X3A-B02US

NP900X3A | NP900X3A-B06US

NP900X3A | NP900X3A-B07US

NP900X3A | NP900X3A-B0BUS

NP900X3B | NP900X3B-A01US

NP900X3B | NP900X3B-A02US

NP900X3C | NP900X3C-A01US

NP900X3C | NP900X3C-A02US

NP900X3C | NP900X3C-A03US

NP900X3C | NP900X3C-A04US

NP900X3D | NP900X3D-A01US

NP900X3E | NP900X3E-A02US

NP900X3E | NP900X3E-A03US

NP900X3E | NP900X3E-K01US

NP900X3F | NP900X3F-K01US

NP900X4B | NP900X4B-A02US

NP900X4C | NP900X4C-A01US

NP900X4C | NP900X4C-A02US

NP900X4C | NP900X4C-A03US

NP900X4C | NP900X4C-A04US

NP900X4C | NP900X4C-A06US

NP900X4C | NP900X4C-A07US

NP900X4C | NP900X4C-K01US

NP900X4D | NP900X4D-A03US

NP900X4D | NP900X4D-A05US

NP900X4D | NP900X4D-A06US

NP-N145P |

NP-NF210 |

NP-P530I |

NP-Q330 |

NP-RV410I |

NP200A5BI |

NP200B5AI |

NP300E4AJ |

NP300E4X |

NP300E5E |

NP350V4C |

NP355V4C |

NP400B4BI |

NP600B5BH |

NP700Z4AH |

NP880Z5E |

.

.

here is a list of known bios password that According to reports worked for many laptops including samsung:

Award BIOS backdoor passwords:

ALFAROME BIOSTAR KDD ZAAADA

ALLy CONCAT Lkwpeter ZBAAACA

aLLy CONDO LKWPETER ZJAAADC

aLLY Condo PINT 01322222

ALLY d8on pint 589589

aPAf djonet SER 589721

_award HLT SKY_FOX 595595

AWARD_SW J64 SYXZ 598598

AWARD?SW J256 syxz

AWARD SW J262 shift + syxz

AWARD PW j332 TTPTHA

AWKWARD j322

awkward

AMI BIOS Backdoor Passwords:

AMI BIOS PASSWORD HEWITT RAND

AMI?SW AMI_SW LKWPETER CONDO

Phoenix BIOS Backdoor Passwords:

phoenix PHOENIX CMOS BIOS

Misc. Common Passwords

ALFAROME BIOSTAR biostar biosstar

CMOS cmos LKWPETER lkwpeter

setup SETUP Syxz Wodj

Other BIOS Passwords by Manufacturer

Manufacturer Password

VOBIS & IBM merlin

Dell Dell

Biostar Biostar

Compaq Compaq

Enox xo11nE

Epox central

Freetech Posterie

IWill iwill

Jetway spooml

Packard Bell bell9

QDI QDI

Siemens SKY_FOX

TMC BIGO

Toshiba Toshiba

Hi there,

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Regards