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I have received a new Lenovo T420 laptop with Windows 7.

The disk now contains:

  • a hidden SYSTEM_DRV boot partition (1.17 gb, 400mb used). I'm guessing this is the EFI partition, the laptop comes with UEFI instead of legacy BIOS. This partition is NTFS formatted.
  • the win7 partition
  • a rescue partition

As I've come to understand, the bios is EFI but MBR is used, not GPT.

Since I'm going to install linux anyway, I figured it would be a good idea to convert to GPT.

I found the tool fdrive, that offers the option to covert the MBR partition table to GPT partition table. But I don't know what happens with that boot partition, with the windows installation and things like that.

If anyone has looked into such issues please advise. Maybe there's something I dont understand.

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Why do you care its its MBR or GPT? –  soandos Jul 26 '11 at 4:56
@soandos Well, this is a powerusers board isn't it? For experimentation mostly. But I think I'll give up on this idea for the following months, as I just found there are a couple of very serious bugs in ubuntu that affect this exact thing I want to do. –  nick_uk Jul 26 '11 at 11:30
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