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Convert Levovo T430 Windows 7 Factory Disk to UEFI Without ReInstall

My Lenovo T430 came with UEFI 2.3.1 firmware but Lenovo had factory-installed Windows 7 Professional 64-bit using an MBR-partitioned 500gb disk. I was a bit unhappy with that and decided to convert the disk to GPT (GUID Partition Table) and modify Windows 7 to UEFI-boot without reinstalling Windows 7. While, I was at it, I decided to install Fedora 17 and enable either operating system to be booted without the need for GRUB, LiLo or the like. This post describes how I did it. This post was written some months after I successfully converted my laptop – so I may

Intel BIOS-Based Motherboards and GPT

Have you an Intel BIOS-based motherboard? Have you installed Fedora 16 only to find that your system will not boot and you end up an the GRUB2 rescue prompt wondering what to do? The solution is simple and I will explain it to you in a moment. The problem is due to the way the Intel BIOS developers choose to implement their code based on their understanding of the PMBR (Protective MBR) GPT specification. If you want to read this specification in full, you need to read Section 5 of the UEFI 2.3 specification together with T13 EDD-4 revision 2.

Fedora 16 GPT, GRUB2 and BIOS Boot Partition

As people start experimenting with Fedora 16 (Verne), many are encountering the concept of of a GPT (GUID Partition Table), the GRUB2 multiboot utility and the concept of a BIOS Boot partition for the first time. Here is how Fedora 16 Beta set up the partitions on a 8Gb disk when all defaults were selected: # parted /dev/vda GNU Parted 3.0 Using /dev/vda Welcome to GNU Parted! Type ‘help’ to view a list of commands. (parted) p Model: Virtio Block Device (virtblk) Disk /dev/vda: 8590MB Sector size (logical/physical): 512B/512B Partition Table: gpt Number Start End Size File system Name Flags

GPT BIOS Boot Partition

Now that Fedora 16 (Verne) is in beta, many early adapters are encountering GRUB2, GPT and BIOS Boot partitions for the first time. The concept behind a BIOS Boot partition is not something particularly new. On BIOS-based computers, boot loaders images are larger than can be fitted on a single disk block or two. To overcome this inherent limitation, boot loaders are often split into a number of stages. For instance, GRUB Legacy has Stage1 code that lives in bytes 0 to 445 of the MBR, i.e. LBA0 (Logical Block Address), of a disk, and other code that lives in

Fedora 16 MBR GRUB Legacy to GPT GRUB2

This post discusses how to upgrade your Fedora 16 system from a MBR partitioned boot disk booted using GRUB Legacy to a GPT partitioned disk booted using GRUB2 and a BIOS Boot partition. For the purpose of this post I set up a 8Gb SPICE guest, installed Fedora 15 and then upgraded the guest to Fedora 16 Beta using the following commands: # rpm –import # yum -y update yum # yum clean all # yum -y –releasever=16 –disableplugin=presto distro-sync Here is what the boot disk looks like after the upgrade from Fedora 15 to Fedora 16 Beta had