監視器影像救回後, 全是黑畫面 - 儲存設備
By Ida
at 2013-07-21T08:24
at 2013-07-21T08:24
Table of Contents
會不會是在刪除前, 刻意將黑畫面的資料寫入硬碟,
將原畫面覆蓋, 因此, 救回的資料才變成黑畫面?
但即使如此, 黑畫面底下的原畫面不能救回嗎?
(印象中, 好像有一種特製的讀寫頭, 可用來讀取 disk 深層的資料.)
我記得有一隻專門用來刪除資料的程式(名字忘了),
它會連續七遍將無意義的資料寫入欲刪除
的區域. 徹底破壞刪除的資料.
若禁閉室的錄影畫面救不回來, 莫非動手刪資料的那個人就是用這種程式?
--
將原畫面覆蓋, 因此, 救回的資料才變成黑畫面?
但即使如此, 黑畫面底下的原畫面不能救回嗎?
(印象中, 好像有一種特製的讀寫頭, 可用來讀取 disk 深層的資料.)
我記得有一隻專門用來刪除資料的程式(名字忘了),
它會連續七遍將無意義的資料寫入欲刪除
的區域. 徹底破壞刪除的資料.
若禁閉室的錄影畫面救不回來, 莫非動手刪資料的那個人就是用這種程式?
--
Tags:
儲存設備
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