The partitions can be read by means of gdisk. dev/sdc1 is an ESP on a GPT-formatted hard disk in the following example. The appropriate boat loader is located on the UEFI system partition (ESP). The boot manager will manage the boot entries in the persistent NVRAM. For Windows, a GPT device is mandatory however. Whether this system partition is stored on a device formatted using GPT or MBR is not important. The specification has determined that a UEFI system partition is needed for booting from a block device via UEFI. Windows (see below) can boot from GPT devices only in UEFI mode. One simple option involves moving the system partition to a non-GPT partition, booting from there and then adding the individual GPT devices. There are no barriers to using the traditional approach.įor booting from a GPT device, Linux requires a Bios Boot Partition and a boot loader that can work with the GPT format (such as Grub2). In terms of correct partitioning it is possible to use:
#Windows efi shell install#
For example: UEFI:DVD/CD drives or UEFI:USB-sticksĪccording to the Ubuntu documentation about UEFI there are several ways to install Ubuntu under UEFI:.To ensure that the installation medium will be started in UEFI mode, any entry known to the UEFI system can be selected from the UEFI menu. For this, the boot loader sequence is stored in the persistent NVRAM. This menu allows selection of all UEFI conformant boot media that are available to the system. The management of a set boot entries already in the platform firmware is the objective of the UEFI boot manager. UEFI provides its own boot manager, which makes loading boot loaders for UEFI-supported file systems possible. An explicit selection of UEFI boot entries guarantees booting the installation medium in UEFI mode
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