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Testdisk Pada Western Digital Wd6400bpvt-22hxzt1

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assalamualaikum.

ada masalah pada hdd western digital wd6400bpvt-22hxzt1, yg digunakan pada notebook acer timeline.

1. macam mana kalau kita nak tgk Cylinder Head Sector (CHS) sebenar hdd ini, sedangkan di dalam BIOS tidak ada info ttg ini. Kalau u all guna hdd sama seperti saya, pls bagitahu utk rujukan sebenar.

2. saya ada mencuba guna software testdisk, info yg keluar Cylinder=77825 Head=225 Sector=63. bila buka testdisk dan try analisis partition saya dapati cylinder dia bertukar ke 77826. saya quit analisis, dan cuba tukar disk geometry kepada Cylinder=77825 Head=225 Sector=63. selesai saya reboot.

lepas restart pc, saya buka balik testdisk dan lakukan analisis kpd partition, dan testdisk masih lagi menyatakan Cylinder=77826 dan bukan 77825. napa jadi mcm tu??

ni struktur di dalam hdd yg asal.
[code]
1 * HPFS - NTFS 0 32 33 12 223 19 204800 [System Reserved]
NTFS, 104 MB / 100 MiB
2 P HPFS - NTFS 12 223 20 6374 59 21 102195200 [windows7]
NTFS, 52 GB / 48 GiB
3 E extended LBA 6375 1 1 77825 254 63 1147860252
5 L HPFS - NTFS 6375 1 3 77825 37 36 1147846552 [storage]
NTFS, 587 GB / 547 GiB[/code]

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salam.

saya ada belek2 pada halaman testdisk, utk menyimpan nilai CHS.
[code]http://www.cgsecurity.org/wiki/Intel_Partition_Table[/code]

Ada 2 cara....

cara pertama :
[code]
convert LBA to CHS,
store (cylinder & 0x3FF, head & 0xFF, sector & 0x3F)
[/code]

cara kedua :
[code]
convert LBA to CHS

if cylinder <= 1023, store (cylinder & 0x3FF, head & 0xFF, sector & 0x3F)
else store (1023, max_head & 0xFF, max_sector & 0x3F)
[/code]

NB: 1023 = 0x3FF (1023*255+254)*63+63-1=16450559 (2912*255+ 0)*63+ 1-1=46781280


ada sedikit masalah bro.
bila kita kira manual pada contoh yg diberi, hasil sama.
tapi bila saya tukar nombor berikut merujuk kepada hdd saya, nilainya tak serupa...
help... mcm mana mau kira...

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