File disappeared from ntfs after ubuntu installation

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http://askubuntu.com – I wanted to upgrade a very old version of ubuntu to recent one so I made the following steps: 1) I created a large (over 30GB) tar.gz archive containing all data from my home directory 2) Moved it to ntfs partition 3) Launched ubuntu (12.04) from cd 4) Resized the ntfs partition during installation 5) Completed the installation Then I launched my brand new ubuntu and wanted to copy the archive so: 1) I mounted the partition on which the archive was located 2) I have run 'ls -l' in the place of filesize, modification date etc. '?' appeared instead of any values 3) I launched Windows XP which i (HowTos)