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If the firmware provides an interface for loading UEFI drivers on startup, then support for additional file systems can be added by loading (independently acquired) file system drivers. The UEFI specification mandates support for the FAT12, FAT16 and FAT32 file systems, but vendors can optionally add support for additional file systems for example, the firmware in Apple Macs supports the HFS+ file system.

File system support is inherited from the firmware.No support for certain file system features.ĭoes not have file system drivers, can only access the file system it was installed to.Ĭannot launch binaries from partitions other than the ESP or the Extended Boot Loader Partition (XBOOTLDR partition).ĭiscontinued due to limitations (e.g. Without: multi-device volumes, compression, encryption Supports auto-detecting kernels and parameters without explicit configuration, and supports fastboot. Supports RAID, LUKS1 and LVM (but not thin provisioned volumes). On BIOS/GPT configuration requires a BIOS boot partition. Kernel turned into EFI executable to be loaded directly from UEFI firmware or another boot loader.įork of rEFIt modified to run macOS on non-Apple hardware. Encryption mentioned in file system support is filesystem-level encryption, it has no bearing on block-level encryption.This protocol may however cause issues with certain BIOS implementations see rodsbooks for details.

GPT on BIOS systems is possible, using either 'hybrid booting' with Hybrid MBR, or the new GPT-only protocol.

As GPT is part of the UEFI specification, all UEFI boot loaders support GPT disks.

It could be some other EFI application such as a UEFI shell or a boot manager like systemd-boot or rEFInd.

This could be a boot loader or the Arch kernel itself using EFISTUB.

This is how UEFI bootable removable media work. In this case the firmware looks for an EFI system partition on that disk and tries to find an EFI application in the fallback boot path EFIBOOTBOOTX64.EFI ( BOOTIA32.EFI on systems with a IA32 (32-bit) UEFI).

Firmware reads the boot entries in the NVRAM to determine which EFI application to launch and from where (e.g.

After POST, UEFI initializes the hardware required for booting (disk, keyboard controllers etc.).

The boot loader then loads an operating system by either chain-loading or directly loading the operating system kernel.

the BIOS boot partition (GRUB on BIOS/GPT only).

a partition's or a partitionless disk's volume boot record (VBR).

the so called post-MBR gap (only on a MBR partition table).

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The boot loader's first stage in the MBR boot code then launches its second stage code (if any) from either:.

BIOS launches the first 440 bytes (the Master Boot Record bootstrap code area) of the first disk in the BIOS disk order.

After POST, BIOS initializes the hardware required for booting (disk, keyboard controllers etc.).

System switched on, the power-on self-test (POST) is executed.

If a CSM boot entry is chosen to be booted from, the UEFI's CSM will attempt to boot from the drive's MBR bootstrap code.

If CSM is enabled in the UEFI, the UEFI will generate CSM boot entries for all drives. The UEFI specification has support for legacy BIOS booting with its Compatibility Support Module (CSM). Contribute to Dids/clover-builder development by creating an account on GitHub. In this case the firmware looks for an EFI system partition on that disk and tries to find an EFI application in the fallback boot path EFI BOOT BOOTX64.EFI (BOOTIA32.EFI on systems with a IA32 (32-bit) UEFI).

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Update to latest Clover svn (4697) - Note: EFI/FV2 drivers group refactor in the Clover installer Released as 9576f3.zip on bitbucket, : fix serious regression in the ACPI patcher (AcpiPatcher.c) that caused ACPI/DSDT/Patches content to NOT be applied to merged SSDTs in ACPI/patched.Recent developments and changes are maintained in details in the Clover Changes topic at InsanelyMac. Welcome to the Clover wiki! Here you can find information related to configuration of Clover.