[System] Gaining privileges to copy files in Kubuntu from a HD [USB mounted] with Ubuntu on it

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http://www.kubuntuforums.net – My old computer (with Ubuntu 12.04) broke. In order to save the files in its home directory, to a working computer (with Kubuntu 12.04), I took the HD down from the broken computer, and mounted it in a SATA to USB box. Now I can access it from the working computer, but cannot copy some files because of laking some privileges. Even in the administrative account, with all privileges checked in, I still cannot copy all files from the USB mounted HD. When checked the special privileges on the USB mounted HD for the files and folders I couldn't copy, it was checked in only the owner (other group (HowTos)