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    Windows 7 External drives no longer recognized

    Using Windows 7 for 9 months with two external drives. This morning, neither drive is recognized. In Disk Management, both drives appear as "Unknown," and I am advised to "initialize disk." I right click on the drive and choose to initialize disk, but the reply I get is "Invalid Function."...
    • Cosmonium
    • Thread
    • backup issues disk management external drives hard drive initialize disk invalid function storage problems windows 7
    • Replies: 7
    • Forum: Windows Hardware
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