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Old 12-31-2004, 12:44 AM   #1 (permalink)
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Join Date: Dec 2004
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Default Reformatting

I learnt somewhere that reformatting a disk erases the address tables but not the data on the disk.
What are address tables?
In what situations does a disk need reformatting?
I'm new to computers, please help me out!

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Old 12-31-2004, 08:56 AM   #2 (permalink)
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Formatting only deletes the file allocation table or master file table. That's correct. No files are deleted. But they do not appear on your disk anymore and the clusters where your data is saved are available for new data, this means they will be overwritten when copying new data to the "free" space.

You need to format after deleting a partition. its also recommended to format before installing a new OS to the disk. Clean install.
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