Based on the experience documented in Migrate from MBR to UEFI with an encrypted system partition
I'm considering the opportunity to migrate Windows 7 from the plain ol' MBR to the new GPT/UEFI boot before upgrading to Windows 8. I'm linking my previous post because when migrating Linux I experienced a few issued and learnt a lesson about GPT: don't trust simplicity. I'm not working on the same computer as the other post!!
Anyway, to make it short, I know that in order to boot from UEFI I need an EFI boot partition on first instance, then I must make sure that Windows restores the boot structures correctly once they are missing. I don't have encrypted partitions or other fancy things on this computer, just to clarify.
I'm asking you for any direct experience in the conversion.
- Backup important data
- Run the tool to convert MBR to GPT from the system
- Shut down and physically disconnect unneeded hard disks (just in case..)
- Reboot into DVD recovery mode
- Let recovery fix the boot problem (perhaps auto creating the EFI boot partition)
- If it doesn't work on auto repair mode use
- If that doesn't work I'm screwed
- Does this tutorial on MBR/GPT conversion work on a live Windows system? The last time I used it it ran on a non-system disk and I could successfully shut down the machine the clean way
- Does Windows recovery automatically create the EFI boot partition shrinking the system partition?
- In case I'm screwed (read above) can I create the EFI Boot partition with GParted or similar tool? How large should it be? Then, does Windows Restore do its job?