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I'm running Ubuntu 12.04 off my USB drive at the moment because my hard drive has no OS and won't allow Windows 7 to install on my internal hard drive.

Here's the low down though:

I was trying to install Windows 7 on my laptop and kept getting an error which forced me to open DiskPart up. I had two partitions 60GB and 220GB. All my stuff was saved on my 220GB hard drive and I wanted to install my OS on the 60GB hard drive, but I cleaned disk 0 on DiskPart and now its all unallocated space with no partitions.

I'm hoping it didn't format the drive seeing as the clean was done in a split second. So I have no OS and I booted Ubuntu 12.04 and I'm now trying to access the internal hard drive but it won't show up in the terminal when I type df -h.

Any help would be appreciated.

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In your Ubuntu 12.04 live, there will be an application called 'gparted'. Try accessing your hard drive with that. – harisibrahimkv Aug 22 '12 at 20:08

When you say you "cleaned disk 0" I'm really hoping that doesn't mean you deleted the partition table from disk 0. If that is the case, do not panic as there are ways of getting it back. BUT DON'T TOUCH ANYTHING. This is now a data recovery issue so the less you touch the drive the more data you will get back.

Newer versions of gparted have a tool to recover hard drive partitions but I still recommend dedicated tools to do that. Before you do anything however, you should clarify the current situation by booting into your USB, running gparted, and either posting a screen shot of that drive or listing exactly what partitions exist and their sizes / formats.

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