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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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echosolo
Asked:
echosolo
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4 Solutions
 
CompProbSolvCommented:
If it has a letter, that implies it thinks it is formatted.  Have you tried deleting and recreating the partition, then reformatting?  This can be done in Disk Manager.
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_Commented:
If that doesn't work, run the WD diags on the drive and do a zero-fill on it.
I have run across a few drives like that, and a zero-fill cured it.

If you need the WD diags, you can find it on UBCD, along with a bunch of other useful tools.

www.ultrabootcd.com
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_Commented:
forgot:
- what did the drive come out of? This system?
- any encryption used on it?
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web_trackerCommented:
Note if you decided to delete the partition then reformat all data on the drive will be destroyed but then if you cant access the drive the data is probably already gone.
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CompProbSolvCommented:
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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echosoloAuthor Commented:
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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nobusCommented:
since the drive "has a problem" i suggest to run the WD diag on it - to know it's status
easiest is to download UBCD, make the cd, and boot frm it to run the WD diags :
http://www.ultimatebootcd.com/                              ultimate boot cd
http://ubcd.mirror.fusa.be/ubcd511.iso                        direct link UBCD
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echosoloAuthor Commented:
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!
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nobusCommented:
glad to assist - and tx for feedback
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_Commented:
Glad to hear it.   Thank you much.    : )
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