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Why does Windows not recognize files inside Linux partitions?

I had three drives in my Windows in NTFS format. I going to install Ubuntu 12.4 inside Windows.

In one of the steps of installation I should chose drive for install Ubuntu. I separate 80 GB from one of the drives for " / " and 8 GB for the swap area from another drive.

I stop installation after this step. But when I was in Windows, I couldn't see those drives! I think that Windows can't see this drive because I change the format of the drives.

How do I change the format of those drives? In it, I have very important documentation and files.

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marked as duplicate by Scott Chamberlain, random May 22 '12 at 3:07

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

    
I am not sure, if I understood correctly: You lost access to files, that were previously accessible from within Windows? Did you resize the partition, containing these files? Or did you delete or reformat it? The installer should have warned you about that data loss in the latter case. –  Gurken Papst May 10 '12 at 21:21
    
@GurkenPapst, yes I resize the partition.I separate 80 GB from one partition and 8 GB from anther partition for sowap.previously my partition's format was NTFS and installer warned that can't install ubuntu in this type (NTFS) and I change the type to ext2. So , my friend I don't need Ubuntu and I want to change type of drives permanently for windows. –  AmirHossein May 11 '12 at 5:44
    
It is still unclear to me what you did. I assume, that your important files were on the NTFS partition? Did you change a) (reduce) the size of your NTFS partition to gain free space, where you created new additional partitions or b) change the type of the NTFS partition to ext2 by formatting it. For the latter option, data loss has to be expected. –  Gurken Papst May 11 '12 at 17:23

1 Answer 1

It is likely that when you installed ubuntu, you formatted the drives to use the ext2 or ext3 filesystem that Windows does not natively support. If so you have two options, either reformat the drives to NTFS or a filesystem that both Windows and Ubuntu support (requires reinstallation of Ubuntu), or install a tool on Windows that allows you to read/write to the ext2/3 filesystem.

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this tool not work in windows7.any other? my friend I don't need Ubuntu and I want to change type of drives permanently for windows. –  AmirHossein May 11 '12 at 5:36

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