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  1. #1

    Member Since
    Jan 02, 2007
    Unhappy usb ext hdd can read can't write
    hi, can someone enlighten me on how to change the permission for usb ext hdd to read & write instead of read only? i have no problems with usb thumb drives, only ext hdd.

    thanks. ann.

  2. #2

    dtravis7's Avatar
    Member Since
    Jan 04, 2005
    Modesto, Ca.
    iMac 2010 27" QuadI7 OS10.13 iMac 2008 OSX10.11, MBP Late2011OS10.13 , iPad Pro 10.5", iPhone 5s,
    Is your external USB drive formatted in NTFS by Windows XP? If so due to Microsoft not sharing the necesary info, no other OS can currently write to an Windows NTFS formatted HDD except 2k and XP. Neither Linux or OSX can write, just read NTFS. The secret is make your external drives FAT32 then anything out there can both read and write to them.

    That is why your USB Thumb drives can be written to.

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