Windows 7 forum


Corrupted OEM partition - Best method to reinstall Win 7?

I have a Lenovo OEM installed copy of Windows 7. I need to reinstall Windows 7 on it using my own disk.

On the laptop, I have 4 partitions;
Partition one called SYSTEM_DRV (200MB),
Partition two called Windows (890 GB),
Partition three for Drivers (25GB)
Partition four (20GB).

If I need to reinstall a clean Windows 7, what do I do with these 4 partitions?
Can someone please explain clearly on what's the best way to reinstall - Should I delete all partitions and then start? OR should I keep the SYSTEM_DRV partition - i.e. is this partition mandatory for BOOT OR does the Windows installation create its own BOOT partition?!!
Also, my current Partition two is non readable, and that's what contains the Windows folder.
Chkdsk ran for 5 days, and while I wasn't observing, the system rebooted - I want to know if it happens after Chkdsk?

Would formatting or wiping my Partition two - solve the corruption issue? Currently this partition is non-readable even from the command prompt.

I have searched so many threads and can NOT find anyone explain this clearly. So, if you don't know a simple answer, please don't respond.
All data backup has already been done.

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Clarification Request
Have you verified that the HD is good?

You didn't mention the reason for needing to reinstall Windows but, unless the HD is good shape, there isn't a good way. Also, you mentioned using your own disk. Tell more about that disk. Is it made for that Lenovo? If not, you probably don't want to use it. Your laptop likely has a recovery partition that can restore it to the way it came from the factory. That's really the best approach. A copy of Windows that wasn't designed for your laptop is going to give you a headache. Tell more as to what happened and about the disk that you have.

All Answers

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When doing a clean install

In reply to: Corrupted OEM partition - Best method to reinstall Win 7?

You remove all partitions and leave it blank. Microsoft's Windows 7 installer will partition it again for you. As how to install Windows is now all over the web I don't duplicate that here.

HOWEVER after you install Windows 7, you should have no sound, no WiFi and such. This is normal. Back to it's maker for drivers, apps and what order to install.

-> NO! Formatting does not wipe partitions. For that I try the Windows boot DVD. It's built into the installer. Here's a screen shot ->

PS. If you want to avoid all the work, order restore media.

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