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My OS is/was Windows 7, and I installed Ubuntu to lean a bit about Linux systems. After the installation I booted the computer and found I had no Windows access and I fear I have lost all my Windows data.

How can I recover the old Windows 7 and boot into it?

Or a the very least recover my windows 7 files. I am a complete Linux novice so possible solutions will need to be simple.

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How exactly did you installed Ubuntu? – Uri Herrera Mar 4 '13 at 0:08
Assuming you chose to use the entire disk:… – Uri Herrera Mar 4 '13 at 0:34
Are you sure that you lost the Windows partition? Could you open the disk application, take a screen-shoot of your disk, upload it in Imgur and link it here? – Lucio Mar 4 '13 at 1:33
Or instead of providing a picture include the output of sudo fdisk -l . But if you chose use entire disk the file system has gone you may be able to get some of it back but not everything. – Warren Hill Mar 4 '13 at 9:14

Try use your CD/DVD installation/FD Drive where you install Ubuntu, then choose Try Ubuntu. Find your data, then copy to another drive. edit: If you can't, recheck using GParted Partition Editor.

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When you install you can end up erasing entire disk so this may find nothing. Open terminal CTRL+ALT+T and enter sudo fdisk -l enter your password. Post the results. – Warren Hill Apr 11 '13 at 14:52

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