Re: formatting a USB drive by Jo-Anne
Jo-Anne
Wed Jun 25 18:31:21 PDT 2008
Thank you, Ian! I had no idea one could unformat as well as formatting.
Jo-Anne
"Ian D" <taurus@nowhere.com> wrote in message
news:%237MDWIy1IHA.1236@TK2MSFTNGP02.phx.gbl...
>
> "Bjarke Andersen" <bjarke.andersen@gmail.com> wrote in message
> news:Xns9AC84E446F378bjoegdk@207.46.248.16...
>> "Jo-Anne" <naples@tbcnet.com> crashed Echelon writing
>> news:#dSHrQo1IHA.1236@TK2MSFTNGP02.phx.gbl:
>>
>>> Thank you, Bjarke! Is a quick format actually a conversion from one
>>> system (FAT32) to another (NTFS) rather than an actual formatting?
>>> What I want to do is format the drive in a way that will lock out bad
>>> sectors (if that's the right terminology; I'm thinking back to
>>> formatting floppies in the old days)...
>>
>> No, quick format simply rewrites the first part of the partition table,
>> so
>> the old stored data would seem to be corrupt. In other words data is
>> still
>> there, but the drive looks empty.
>>
>> With a full format every data is being overwritten.
>>
>> You can use format to change filesystem (NTFS, FAT32) but with the
>> expense
>> of loosing the stored data.
>>
>> Regarding locking out bad sectors, if you have a bad sector on a
>> harddrive
>> then look for another drive. Today, bad sectors are often dirt, scratches
>> or mechanical error and only a matter of time when the whole drive will
>> fail.
>>
>> --
>> Bjarke Andersen
>
> Full formatting a drive does not overwrite any data. It just reads the
> entire contents of the drive to find any faulty sectors. That's why
> a drive that's been formatted can be unformatted by an unformatting
> utility, providing nothing has been written to the drive in the interim.
>