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These instructions will let you create a custom Ubuntu 14.04 Server ISO that can boot EFI and MBR. When EFI booting on a system with a blank, uninitialized disk (for example on a new Generation 2 VM in Hyper-V), setup will start automatically. Clover Bootloader will automatically detect.efi files of operating systems installed on your hard drive including Windows, Android, Ubuntu, Linux Mint and other Linux distributions. If you know the path of this file, just add it to Clover as instructed above. But if you install the operating system in Legacy mode, no.efi file. Whether you want to recover access to your unbootable GNU/Linux or you have forgotten your Windows password Rescatux is for you. Use Super Grub2 Disk whenever you cannot boot into any of your systems. In this article we will learn how to repair Windows 10 / 8.1 /8 bootloader on a computer with UEFI.The corruption of the Windows bootloader can occur after the installation of the second OS (in Dual Boot configurations), be caused by the erroneous actions while failure recovering, removal of some data on hidden partitions, malicious software (virus, ransomware, etc.) and for some other reasons.
Active3 years, 10 months ago
Efi Bootloader Iso Download
I have a Windows 8 To Go Entreprise HDD, which boots both on BIOS and UEFI systems (I'm wondering how that's done, because I need that too).
Now, I see the HDD I use for that windows is an MBR HDD, it consist of a 350 MB FAT32 partition which holds the booting file to boot the second, NTFS partition which contains thw Windows 8 To Go operating system.
on the second partition I have placed a few ISO files under partition2ISO.
for example:
Win8Install.ISOWin7Install.ISOHirenBootCD.ISO
Make sure you have the option selected,to save bandwidth, money and battery life. Connect your devices.
![]() Efi Bootloader Iso 10![]()
when booting from BIOS into the system, and using EasyBCD to create startup entries for the ISO's, the ISO's boot fine, from BIOS.
But when going into UEFI another BCD table is used, so I re-added the ISO's to the UEFI selection, but when selecting the ISO boot created by EasyBCD on the UEFI boot selection, I get the following error:
How do I make UEFI boot ISO files or FAT32 partitions with grub4dos installed? They work fine on BIOS boot.
Seems windows To Go can boot from BOTH BIOS AND UEFI, on an MBR(!! [I have read UEFI can only boot from GPT, lies, lies everywhere]) disk. So this should be possible, please help me.
Edit: Activity Edit.
Gizmo
GizmoGizmo
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1 Answer
Error 0xc000007b may relate to mismatch between 32- and 64-bit, so may be caused by 32-bit grub4dos trying to boot a 64-bit OS.The grub4dos latest release dates from 2009 and knows nothing about UEFI,so shouldn't be used.
You should probably start from scratch and use the tool UEFI MULTI.
The purpose of this tool is described as :
Tool to format USB-stick for Booting with Boot Manager Menu on BIOS or UEFI computer and Tool to make USB-Stick having two partitions - FAT32 Boot partition for WIM or ISO and NTFS System partition for VHD. Option to Install Grub4dos in MBR BootCode, which allows BIOS computer to boot directly from USB with Grub4dos Menu. Option to make Boot Manager and Grub4dos Menu on UFD to boot UEFI + BIOS directly from USB with Boot Manager Menu.
This link describes the procedure of how to create the USB disk.
The procedure is much too long to reproduce here.
Although this tool claims it can do what you want,I have no personal experience with it.
Dec 04, 2015 Windows: 7 - 10 Sound Blaster Live Installation or How to install unsupported Hardware - Duration: 29:45. Tk Computer Service 22,035 views. Dec 17, 2015 Creative SB Audigy 2 ZS driver issue - NO SOUND - after Windows 10 Nov upgrade I uninstalled and installed latest NVIDI driver in compatible (windows 7) mode and worked fine in Windows 10. Attached is the link for NVIDIA driver I installed. Sound blaster sb0350 drivers for windows 10 admin Leave a Comment on SOUND BLASTER SB0350 DRIVERS FOR WINDOWS 10 Posted in Sound Cards This page was last edited on 2 February, at The Audigy and Live shared a similar architectural limitation: Thu Dec 30, 5: Creative Labs Audigy 2″. Sb0350 windows 10 driver. Aug 21, 2016 For PCIe x1, my own first choice as of 31 July 2015 is the Creative Laboratories® SB1550 Sound Blaster® Audigy RX™ PCIe 3.0 x1 audio card (Creative Technology CA10300-IAT DSP), which is supported in Microsoft® Windows® 6.n (unlike my down SB0350), with Win 10.0.12000 support due out.
As regarding your question about how can one disk work for both BIOS and UEFI,this magic is probably achieved by using a Hybrid MBR,which is a format of the disk that looks as if it is both MBR and GPT.This is possible since GPT by design does not use the disk boot sector used by MBR.The size of a Hybrid MBR disk is limited to 2 TB, the maximum size of an MBR disk.
harrymcharrymc
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Not the answer you're looking for? Browse other questions tagged bootusbiso-imageuefiefi or ask your own question.
Active2 months ago
Radeon 9200 windows 7. Having live media that can boot both ways can be a problem when installing Ubuntu onto currently available Windows 8 computers.
In other words the key advantage to creating UEFI-only bootable USB live media is: You know that it definitely booted and installed via UEFI.
Since Valve has already been doing UEFI-only booting USB installers with their Debian-based Steam OS and UNetbootin — the top voted alternative to Ubuntu's Startup Disk Creator — isn't UEFI compatible and therefore misleading, I think we should have a separate topic for creating UEFI-only bootable USB live media.
LiveWireBT
LiveWireBTLiveWireBT
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3 Answers
Creating UEFI-only booting USB live media is pretty straight forward. Just copy the files to your FAT32-formatted USB drive. That's it!
Remember that for an installation or booting the media:
Table of contents
This method also works for other install media that contains EFI loaders, like Windows for example.
1.1. Example via terminal
You can do something like the following if
604A-00EA is your USB drive and you already have p7zip installed:
You're done if you have only one partition on this USB drive, otherwise you need to flag the partition as bootable e.g. via
parted :
Where
/dev/sdX would be your USB drive and 1 the partition number that should be used to boot.
1.2. Example via GUI
Efi Bootable Iso Image1.3. Example on Windows
Instead of extracting contents from an ISO image, GRUB and GRUB2 have been able to boot from ISO images directly through a loopback device. Given that the ISO image is UEFI bootable, we can set up a USB drive containing multiple ISOs with different operating systems without creating a mess on the USB drive.
If you want to boot Windows too you might want to look at SARDU. I remember using it with Windows PE around 2005 and it seems to have been updated to support USB drives and UEFI, but remember that this tool also supports legacy booting.
What do we need?
2.1. Creating the binary
On your Ubuntu machine or VM make sure the package grub-efi-amd64-bin is installed (grub-efi-ia32-bin is also available for 32-bit Intel architectures on newer releases). The package may have a different name on another distribution, you can compare the file listing of the package to find the right package on your distribution.
The following command will generate the GRUB image, in this case an EFI binary that every computer with a UEFI firmware should be able to run:
Every standard UEFI firmware should look into
EFIBOOT for a file named boot{arch}.efi , so create the folders on the USB drive and copy the image we just created to this location. Other architectures instead of x64 are possible, but let's keep it simple with x64/amd64.
2.2. Creating the configuration file
A very basic example for a the
grub.cfg configuration file that should be placed in the same directory as bootx64.efi would look like this:
The important thing is the configuration block with the title
Boot Ubuntu 14.04.2 LTS from ISO . You can change the color and timeout to your preference. I chose black/light-magenta as it still looks a bit Ubuntu-ish but is easily distinguishable when chainloading other configurations. You can find more examples for other distributions in the Arch Wiki and reading the GRUB manual is really worth your time if you want to go beyond that.
Getting back to the configuration block, it should be obvious that the ISO is referenced as
/efi/boot/ubuntu-14.04.2-desktop-amd64.iso , so copy your ISO to EFIBOOT and replace ubuntu-14.04.2-desktop-amd64.iso in the configuration with the actual filename of your ISO.
loopback loop $isofile is the line, that will load our ISO file to a loopback device from which we can boot the Linux kernel directly. This is possible because our EFI GRUB image includes the loopback module. (A bit of trial and error was involved in figuring out which modules are reasonable to include. You shouldn't see any error messages, it's still not perfect though.) Speaking of the kernel you can add kernel parameters like toram , parameters for different languages (example locale=de_DE bootkbd=de ) and as in the example: persistent
2.3. Adding persistency
You can add a partition as described in: How do I get a live-USB to use a partition for persistence? Or you can create a
casper-rw file and place it at the root of your USB drive.
I haven't tested what the absolute maximum is, it should be somewhere between 4094 and 4096 MB. Use a partition if you intend to use more space. Note that every change to the (root) is a modification to the overlay filesystem, even deleting files.
2.4. Checking the integrity
You should look at answers to the following questions to verify that the Live ISO content on the USB drive is in pristine condition:
2.5. UEFI Secure Boot
Secure Boot will become mandatory with Windows 10 machines, I suggest you have a look at the Linux Foundation's PreLoader to add Secure Boot functionality to this setup. Here is some ASCII art illustrating menus of the accompanying HashTool.
Congratulations, I'd say you now mastered UEFI booting and shouldn't be afraid anymore.
Fabby
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LiveWireBTLiveWireBT
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Extract from ISO file to FAT32
Extracting the content of an Ubuntu 64-bit desktop ISO file to a partition with a FAT32 file system and a boot flag will do the job: to create a live drive, that boots only in UEFI mode. It is called 'Copy files from the ISO method' here (in the accepted answer).
Test if running in UEFI or BIOS mode
But it is easy to test in a running Ubuntu system (live as well as installed), if it was booted in UEFI or BIOS mode. Run this command line,
This makes it straightforward to use live systems that can be used in both boot modes, which can also be an advantage.
See also the following links for a more detailed explanation and description of the method,
sudodussudodus
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Using
dd worked for me, for some reason, the GUI version did not work. So, first, you might want to monitor the progess of dd, another options is using the SIGUSR1 option to trigger dd to report it's progress periodically, but this is more complicated than pv .
Then:
( supsup
/dev/device_you_want_to_use will typically be /dev/sdb , but check with df !)
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protected by Community♦Jan 9 '18 at 16:15
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