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  1. #1
    can't read my hp pen drive...

    Member Since
    Aug 26, 2010
    Posts
    7
    Exclamation can't read my hp pen drive...
    Hi,
    I have a hp 4 gb pen drive, at first it was no problem using it with the windows or mac, but recently its not working on pc. I formatted it on pc but it shows only 200mb memory, doesn't show rest of the memory.but when i put it in mac it shows 4 gb. tried formatting on mac (mac-dosfat),but no use,same it shows 4gb in mac & 200mb on pc, pls help me...

  2. #2
    can't read my hp pen drive...
    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Fort Worth, Texas
    Posts
    45,251
    Specs:
    27" iMac i5, 3.2 GHz, iPad 3, iPhone 5c, iPhone 6+, 3 iPods, Yosemite
    Never format a pen drive on your Mac unless it's the only place you wish to use it. You probably formatted it using the default (GUID) scheme in Disk Utility. This creates a small 200 MB partition on the drive and that's the only partition Windows will see. Mac OS X can see the entire drive. To fix it, you'll need a Windows machine and follow these instructions.

  3. #3
    can't read my hp pen drive...

    Member Since
    Aug 26, 2010
    Posts
    7
    Thanks for reply,but I tried disk part,And when I try formatting it says windows cannot format..can u pls help me..

  4. #4
    can't read my hp pen drive...
    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Fort Worth, Texas
    Posts
    45,251
    Specs:
    27" iMac i5, 3.2 GHz, iPad 3, iPhone 5c, iPhone 6+, 3 iPods, Yosemite
    Did you read the instructions that are given in the link I posted? You don't format the pen drive by using DiskPart, you first remove the offending partitions and then it can be formatted. Try again.

  5. #5
    can't read my hp pen drive...

    Member Since
    Aug 26, 2010
    Posts
    7
    Thanks for replying again, yeah i did go by the directions.when the diskpart said disk is cleaned,i tried to format it.then it says windows was unable to complete the format.

  6. #6
    can't read my hp pen drive...
    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Fort Worth, Texas
    Posts
    45,251
    Specs:
    27" iMac i5, 3.2 GHz, iPad 3, iPhone 5c, iPhone 6+, 3 iPods, Yosemite
    In order to format the HP Pen drive you must first create a partition on it. Use Disk Manager to create one partition, in other words, the entire drive. Once the partition is created, format it as FAT-32. Let us know if that works.

  7. #7
    can't read my hp pen drive...

    Member Since
    Aug 26, 2010
    Posts
    7
    Thank you,
    you saved my pen drive... thanks a lot...

  8. #8
    can't read my hp pen drive...
    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Fort Worth, Texas
    Posts
    45,251
    Specs:
    27" iMac i5, 3.2 GHz, iPad 3, iPhone 5c, iPhone 6+, 3 iPods, Yosemite
    OK. Glad you finally got it working. Just don't attempt to format it again using Disk Utility.

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