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Does XP verify writes automagicially?

Discussion in 'Windows XP' started by Atarian, Apr 21, 2010.

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  1. Atarian

    Atarian Thread Starter

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    I can't believe I can't find a rapid or even not so rapid answer to this question, so I will try here.

    Does Windows XP (SP3) verify writes were successful automatically (kinda like xcopy /v) when just using explorer to copy and paste? I often backup My Docs to an external USB drive - is Windows doing some sort of check/verify the copy was good or is it just assuming it was?

    Thanks for any help!
     
  2. Squashman

    Squashman Trusted Advisor

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    Not really. You would need to use a program like Teracopy which makes a checksum value of the base file and then it can create a checksum value for the target file. If they don't match it throws up an error.
     
  3. Atarian

    Atarian Thread Starter

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    Thanks, I have downloaded it and will give it a try.
     
  4. jiml8

    jiml8 Guest

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    Write verifications are usually done at the hardware level. Your hard drive should verify write and rewrite if required.
     
  5. Atarian

    Atarian Thread Starter

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    So I'm thinking that in a relatively modern drive the data is sent to the drive's buffer and then gets written/verified? I guess the potential for loss is when data is moved from one drive and gets corrupted somehow before reaching the destination (?).
     
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