50
votes
Accepted
Is there a list of available boot-args for darwin / OS X
There is no official list, the common one are compiled into kernel it-self, other can be parsed by kernel extensions. Here is the list which I've found so far.
General boot options:
-v: Always boot ...
- 25.1k
29
votes
Accepted
How to hide EFI-partition?
Apparently, it wasn't the EFI- but recovery-partition, which showed up due to a bug being present in the upgrade to v1803 of Windows 10.
Following simple line did hide it in an administrator command ...
- 951
23
votes
Create EFI partition before installing Windows 10
Most likely, you won't need larger ESP (EFI System Partition). Windows OS loader is rather small and Fedora will most likely just install GRUB on ESP and place the rest of its boot files in /boot ...
- 56.4k
19
votes
How to hide EFI-partition?
Following the instructions of user Japelo_1976 in this thread helped me.
You have to delete the registry file with regedit for the volume you want to remove the drive letter.
Open Windows ...
- 191
18
votes
What is an EFI system partition?
The EFI system partition (ESP) is a partition on a data storage device (usually a hard disk drive or solid-state drive) that is used by computers adhering to the Unified Extensible Firmware Interface (...
- 181
18
votes
How to get out of EFI shell in virtual box
The EFI shell is a command-line tool similar in concept to bash in Linux/Unix/OS X or a Command Prompt window in Windows. It lets you view, delete, edit, and rename files, to update EFI boot manager ...
- 21.6k
15
votes
How do edit the contents of my BIOS boot list?
You don't have a BIOS; you have an EFI (or UEFI, which is EFI 2.x), which is a replacement for a BIOS. Unfortunately, many people, and even many manufacturers, refer to their EFIs as "BIOSes," but ...
- 21.6k
14
votes
Accepted
How to scroll up and down in EFI shell
Yes, you can scroll. Use PgUp or Shift+PgUp to scroll it up. I have checked it in EFI shell v1 and v2 in virtual machines and in a real machine, all variants are working.
- 3,628
14
votes
Accepted
How can I reboot or shutdown the system in an EFI or UEFI shell?
The command reset will do both poweroff and reboot. From the UEFI Shell Specification
reset
Summary
Resets the system.
Usage
reset [-w|-s|-c [string]] [-fwui]
Options
-s
Performs a shutdown
-w
...
- 2,838
11
votes
Remove EFI System Partition
Assuming you are on Windows and are asking about DiskMgmt.msc:
Run DISKPART, which is a command-line tool which uses the same Windows volume manager.
Use list disk and select disk <number> to ...
- 437k
9
votes
How do I find out which EFI system partition is in use by Windows 10?
I'm attempting to configure the same on a Surface Book Gen 1. It appears that the way to identify is to run the following invocation at cmd:
echo list volume | diskpart
The bootable EFI ...
- 250
7
votes
How do I check if I have an EFI partition on my computer?
The globally unique identifier (GUID) for the EFI System partition in the GUID Partition Table (GPT) scheme is C12A7328-F81F-11D2-BA4B-00A0C93EC93B, while its ID in the MBR partition table scheme is ...
- 5,110
7
votes
Accepted
Run EFI files/scripts from [boot, virtual media] ISO
The below solution is implemented on Linux Mint 19 64 in Virtual Machine.
Tools needed
GParted – GUI tool to manage partitions. This is generally available in Live Linux CD/DVD. If you do not have ...
- 5,367
6
votes
How to enlarge Windows 10 EFI partition
To move sensitive partitions, you need to boot from CD or USB.
Some free partition editors that have boot CD are :
MiniTool Partition Wizard Free (Bootable CD)
GParted Live
Of the two, MiniTool has ...
- 465k
6
votes
How to get Asus motherboard to recognize EFI system partition?
First, some key points about EFI-mode booting:
EFI firmware includes a boot manager that maintains a list of bootable files and devices in NVRAM, along with a priority list of what should be booted ...
- 21.6k
6
votes
Copying files to EFI shell through network
Well, when i started developing EFI applications, i found the same problem. How to send file on EFI environment? For now I know these ways:
1. USB storage device.
Probably the easiest way if you copy ...
- 191
6
votes
How do I find out which EFI system partition is in use by Windows 10?
open a command prompt with admin privileges (approve UAC if demanded)
start diskpart -> diskpart
select your disk with efi partions -> sel disk 1 (if disk 1 is the correct disk)
list your available ...
- 400
6
votes
EFI sig list converter or viewer
The efitools package contains the sig-list-to-certs tool, which allows you to extract DER-encoded X.509 certificates from the .esl files (e.g. to extract and print out the first KEK certificate):
efi-...
- 61
6
votes
What Filesystems Are Supported by Lenovo And Dell Laptops on EFI System Partition?
Any vendor that will support in the UEFI firmware additional file systems like
ext2/3/4 will be strictly non-standard and will require a specialized UEFI firmware.
This is unlikely to exist (except on ...
- 465k
5
votes
How to specify a kernel to refind?
That looks like an entry in refind_linux.conf. If so, that file applies to all the kernels in a directory. If a directory holds multiple kernels, rEFInd "folds" them into a single entry on its main ...
- 21.6k
5
votes
UEFI "replaces" BIOS and "connects with firmware" but BIOS == firmware so WTF?
Different people use terminology in this area in different ways, so there's not 100% agreement, and that can lead to confusion. That said....
Firmware -- This term generally refers to software stored ...
- 21.6k
5
votes
Copying files to EFI shell through network
Adding on to Dmitry's Solution:
4. Transfer via HTTP
This one is similar to TFTP in that you will need to build the binary for it and place it in the same location as your shell (or elsewhere, but ...
5
votes
Accepted
Do I need an separate EFI partition for each OS sharing a common disk?
ESPs are usually shared across OSes, so no, you don't need a second one; but it also should not cause problems. That said, some tools or OSes may become confused by the presence of two ESPs. The ...
- 21.6k
5
votes
access denied with bootrec /fixboot
FIXED! Thank god!
The problem was that I was booting the recovery usb normally (just selecting the usb). It is super-duper-EXTRA important that you select boot to the usb UEFI option! Once I did ...
- 346
5
votes
Accepted
How can I see my GUID partition table (gpt) physically with hexdump?
The partition table cannot be located in a partition, because it describes where partitions are. Instead, it is located at a fixed disk location outside any partitions and usually does not have any ...
- 437k
5
votes
Accepted
How to normalise Win10 MBR partition to migrate to GPT and standard EFI
Create the boot partition manually, format it, populate it using bcdboot.
bcdboot C:\Windows /s S: /f UEFI
Some official Microsoft guides on manual partitioning:
https://docs.microsoft.com/en-us/...
- 437k
4
votes
How do I mount the EFI partition on Windows 8.1 so that it is readable and writeable?
I tried everything and nothing worked on explorer for me.
I tried killing and running explorer from elevated cmd, and also tried the same with PowerShell and nothing worked.
I could however edit ...
- 51
4
votes
How to launch vmlinuz-linux from efi shell?
Just had to type /vmlinuz-linux root=PARTUUID=3518bb68-d01e-45c9-b973-0b5d918aae96 initrd=/initramfs-linux.img from this https://wiki.archlinux.org/index.php/EFISTUB#Booting_EFISTUB but had to remove ...
- 995
4
votes
Accepted
Show options of EFI entries
The kernel parameters are (or should be) shown; it's just that they're converted to UTF-16 when you create the entry and then shown in two-character form, with "." characters between entries, when you ...
- 21.6k
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