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6 B* l0 l+ Y7 Y, U[font=Verdana]Here, we only discuss NVRAM of laptop HDD. ( In desktop HDD, NVRAM is identical for a same family). The picture below shows you typical data structure of NVRAM.% j# ?1 L1 \! u; v1 ^ ?
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[font=Verdana]1: NVRAM version, "A60A"+ _' z. N6 |/ k7 `; T, f$ K/ K
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[font=Verdana]2: Version checksum, "1E602135" (High byte backward, low byte forward)
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[font=Verdana]3: FW boot flag. "0x01", boot from SA-A; "0x00" from SA-C, factory copy.- H. o4 h+ O4 r$ X1 w
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2 N/ m7 ]: |7 O/ T2 A: x9 w[font=Verdana]4: Head map "00 01 02 00"( K5 D D A3 N( X
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# P+ E7 ?6 q( k" Q2 ~[font=Verdana]5: Adaptive parameters of data area, "14F1" (High byte backward, low byte forward)0 `9 V. A3 l$ M! E. k9 \
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( }& R' {6 g1 ~ |7 k' @[font=Verdana]6: Adaptive parameters of data area, "83F8" (High byte backward, low byte forward).
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8 Z, h% }6 [# `/ l[font=Verdana]7: "XGH7Z3DM", S/N on the label.( u9 y) B$ s6 H, P, w: a; w
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[font=Verdana]Attention: the offset of those strings differs from different drive family.[/font]
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发表于 2009-8-7 09:47:00
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发表于 2011-1-25 11:51:00
