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標題: [求助] 我個external hard drive 壞左
1022292057     Rank: 4Rank: 4
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發表於 2009-7-5 01:41 PM  資料  個人空間  主頁 短訊  加為好友 
回復 #20 mickeyGoUp 的帖子

quick format is the way to go if possible, a complete format will scan each sector and mark it bad if it can't read, which may affect ur chance in recovering data on bad sectors.
but if u can't use quick format (as sectors maybe damaged in ur hd from the power surge) then complete format is fine too

generally, nowadays, both quick and complete format provided by windows are also high-level format, they only format the first section so data cannot be accessed and can be treated as free space. Therefore, recovery is always possible these days as u may heard a lot of criminal cases are closed after the police recovered criminal data from a formatted harddrive
if u stil have a 486 or earlier system, u can go inside cmos and u will see the option "low-level format", which uses zero-writes and it even formats track 0

mickeyGoUp :
I see! Thanks for explaining!

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mickeyGoUp     Rank: 7Rank: 7Rank: 7
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發表於 2009-7-6 11:41 AM  資料  個人空間  短訊  加為好友 


QUOTE:
原帖由 ultraegg 於 2009-7-5 10:42 PM 發表



問題係, high level format 完, 一般 end user 用的 application, 未必能完全救返晒 d 相喎!

而且小美妹話有 "tak tak tak" 的聲, high level format 多數 fix 唔到, 要 low level 先得! 好似你之前講 maxtor 問題, 我試過 10 隻有事, 7隻 low level format 後可以用得返一段長時間!

乜唔係 high level format 只係想令 d software/application 可以再讀到個 drive,而 d application 到時就識得嘗試去從 physical sector 讀 d data (唔跟 file allocation table) 去嘗試 recover 咁架?  係就係唔一定可以 recover 返所有相,所以咪話如果冇其他方法,呢個係我會試一試既辦法,還掂都打算放棄,最後一鋪救得幾多得幾多喎!

不過 "tak tak" 聲係咪可能係 hardware 問題呢?  如果係的話,就連 software/application 都操作唔到個 drive,咁就好難會讀得番播。

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發表於 2009-7-6 03:30 PM  資料  個人空間  主頁 短訊  加為好友 
回復 #22 mickeyGoUp 的帖子

yup, that's what the format is for
there is no low level format these days anyways unless u use specialize 3rd party software

for the "tak tak" sound, that doesn't really proof if hardware is damaged, a tick occurs when the disc hand stops suddenly and move back to initial position, so when u hear tak tak tak, it's most likely mean drive is retrying to read sth it couldn't read, and since it's a consecutive tak sound, the sector it couldn't read is very close to the beginning which probably is the header. in a case where harddrive cannot read partition will cause this very same sound. either hardware damage on the header sector or software damage is still possible to produce such a sound. But since there are signs that the harddrive is retrying to read sector, it means hard drive isn't totally burnt, or else u will only hear one tick for the hard stop and no sound will be heard from the hard drive after. Plus, the detection of the drive proves alot, if harddrive is badly damaged, detection is not possible, in cases where hd is still detectable, recovering data is highly possbile

so far we can only conclude that the header is damaged(hardware or software), but the actual data we don't no, so first we should see if partition is recoverable, which is the #1 step i posted
i encountered many cases where hard drive are recovered by fixing or recreating the partition
maybe 小美 can post what she see when scanning the drive for partition using the Active@ partition recovery tool?
depending on the behaviour on the scanning, we may conclude more stuff and may have other altenatives

*remark for misunderstanding, high and low level format is different from quick and complete format, complete format sometimes fixes a damaged harddrive becoz it marks the damaged sector as bad and will not use those sector, which will then fix the harddrive that a quick format cannot, both quick and complete are also high level format



最後編輯: 1022292057 : 2009-7-6 03:36 PM
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小美     Rank: 4Rank: 4
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發表於 2009-7-7 02:20 PM  資料  個人空間  短訊  加為好友 
家吓連機都開唔到, 已經 detect 唔到

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mickeyGoUp     Rank: 7Rank: 7Rank: 7
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發表於 2009-7-7 07:24 PM  資料  個人空間  短訊  加為好友 
回復 #24 小美 的帖子

唉!!!!  咁個 drive 過左保養期架拿?  有冇得叫 WD 整返起碼可以 detect 到?

小美 :
部死野係個朋友平讓俾我地 :(

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ultraegg (我係2蛋爸爸!)     Rank: 7Rank: 7Rank: 7
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發表於 2009-7-9 09:43 AM  資料  個人空間  短訊  加為好友 
有無試過自己拆個 HDD 出黎, 雖然用 USB TO IDE/SATA CABLE? 可能 detect 返個 drive, 之後先再諗下一步

小美 :
咁大工程 lol
我有時間會試吓





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