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echosoloFlag for Afghanistan

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Hard Disk recognized but Win 7 can't format it.

My Western Digital 1500 HLFS VelociRaptor is recognized by Win 7 but I can't access the disk.  I'm told it has to be formatted, but Win 7 is "unable" to format.  The Disk Drive has a letter assigned to it.  I checked properties and found that 0 bytes are used and 0 bytes are free.

Any help?
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CompProbSolv
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forgot:
- what did the drive come out of? This system?
- any encryption used on it?
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Web_tracker raises an excellent point about destroying the data and I should have mentioned that.  While there are methods to recover data from re-formatted drives, if your intent is to read what is on the drive then re-formatting is NOT a good step.  I assumed that you were trying to start with a blank drive.
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I have been away from the computer.
I am trying to start with a blank drive.
Also the drive came out of my computer.  I was going to use it as a firewire back-up drive and then ran into this.
I'll do what I've been advised to do now [diagnostics and try formating] and let you know what happens.  And thanks, really, for the help
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What worked beautifully - ran WD diagnostics Lifeguard and it passed.  Then I zeroed out the disk -- and it passed. Then I couldn't see the hard drive - it had no letter.  But I remembered that CompProbSolved said if it sees a letter it thinks the drive is formatted.  [thinking backward, I realized the drive needed to be formatted to be seen].  I started Disk Manager which recognized the drive -- but required that it be initialized in order to be used.  I initialized the drive.  Then formatted it.  And now it's working PERFECTLY.

Thanks all!
glad to assist - and tx for feedback
Glad to hear it.   Thank you much.    : )