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I just got a new flash drive (Corsair Flash Voyager 32GB). I tried to install live Chromium OS on it but I messed something up and decided to reformat it. The formatter froze and I canceled it. Now neither my Windows 7 Dell nor my Apple OS X Lion can recognize my flash drive when I plug it in (it does not show up anywhere). How can I force it to show up so I can reformat it?

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Try using a Gparted Live CD –  VBwhatnow Jun 29 '12 at 7:32
    
May be the format froze because the USB stick went defect? –  Robert Jun 29 '12 at 8:38
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2 Answers

up vote 1 down vote accepted

Return it and get a new one. Works every time.

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You can try to use DISKPART utility in Windows 7.

When you enter that utility, first write LIST DISK. That will give you list of all recognized drives including USB. Remember number (e.g. 9). Than you can execute

SELECT DISK 9
CLEAN
CREATE PARTITION PRIMARY
FORMAT FS=FAT32 QUICK

That should give you clean slate.

P.S. Do be careful to select correct disk number. If you select wrong number, you will format wrong disk.

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Just tried list disk, only my hard drive shows up. –  Matt Jun 29 '12 at 7:40
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That usually means that something has gone on hardware level. –  Josip Medved Jun 30 '12 at 1:57
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