How to convert a Master Boot Record into GUID Partition Table to install Lion?

[gguerini]

Hi guys,

I was one of the lucky ones that had a flawed Intel 320 SSD. I was already using Lion few weeks ago when my SSD "crashed" and I lost everything. Fortunately, I had another HDD (optibay) and I managed to install Snow Leopard there until I could fix my SSD. Last night I installed the new firmware on my 320 SSD and it became alive again. I decided to use SuperDuper to clone my HHD with Snow Leopard to my SSD. It worked great, BUT, my SSD is now a MBR (Master Boot Record) and I can't install Lion on it. The installations tells me to go to Disk Utility and change the partition scheme, but it doesn't let me do it.

Is there a way to convert from MBR into GUID Partition Table?

Did I do something wrong with SuperDuper? Or should I just erase the SSD, change the partition to GUID and then "clone" my HDD again without the boot option?

Any help will be very appreciated.

Thank you all!

 

[Partron22]

Is there a way to convert from MBR into GUID Partition Table?

Sure, reformat the drive.
I had three that needed that treatment before I could install Lion.
Once it's reformatted, you can restore content with SuperDuper!. It doesn't mess with partition table format.

 

[gguerini]

This is what I ended up doing. I reformatted the SSD, then I changed the table scheme and finally, cloned the HD. It's working properly now! Thanks.