I have just had all data disappear from NTFS volumes on three internal drives (one new), while working in Ubuntu 12.04, on my near-new hi-spec'ed Windows 7/Ubuntu box. Everything was fine until I rebooted the box after installing some software and all the data (about 5 TB) was gone. The partitions are still there, but they show (in Ubuntu and Windows 7) as completely empty (apart from the System Volume Information folder). Data in two ext4 volumes, and two connected NTFS USB drives, was unaffected. On my brand-new 3TB drive, one NTFS volume was unaffected and the other emptied.
I have tried Recuva and NTFS Undelete, but these only show a few old (genuinely deleted) files. Using TestDisk I have confirmed that the files are still there, but named "inode-xxxxxx". I know I can recover those files these files with Testdisk and rename them, but that will be a very onerous job (less so for tagged mp3 files, but there are a large number of video files as well).
I haven't written anything to the volumes since this happened, and only run the Windows disk check without the "fix" option. Can anyone suggest another approach that might recover the file names?
Cheers and thanks for any help.