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How to Defragment a JFS

    • 1). Launch the Terminal application by selecting "Applications," "Accessories" and then "Terminal." Depending on your Linux distribution, the menu options to find Terminal may differ slightly.

    • 2). Type "sudo fdisk -l" and then press "Enter" to view a list of hard drives associated with your system.

    • 3). Note the device name of the JFS hard drive you wish to defragment. For example, if you are defragmenting your primary hard drive, it will probably have a device name of "/dev/sda1."

    • 4). Type "defrags device name," replacing "device name" with the name for your JFS hard drive, and then press "Enter." This will run the degragmenting utility for JFS.

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