![]() Purchased since 2011 however, some older computers (particularly some Thus, the problem is most common in computers Most of the problems occur on EFI-based computers set to boot inīIOS/CSM/legacy mode. That some boot loaders could become confused by GPT, so a GPT-incompatibleīoot loader could cause boot problems. There may be other problems, too many reports are vague, and my ownĪbility to investigate is limited to the computers I own. Tools violate the GPT specification on this score, which makes this This motherboard unless they're modified. To this aspect of the GPT standard, its partitions cause problems for To have CHS values that aren't technically legal. Unfortunately for this BIOS, the GPT specificationĮxplicitly requires its EFI GPT (0圎E) partition in the protective MBR Require CHS geometries that are legal in the peculiar CHS encoding ![]() With a Phoenix/Award BIOS version 6.00G, dated ) seemed to At least one computer I owned (using a Biostar PT880 Pro-A7 motherboard.Normally flagged in this way, the affected firmware won't boot from GPT Since the protective MBR's single EFI GPT (0圎E) partition is not One MBR partition that's marked as bootable/active to boot in BIOS Some BIOSes and EFIs require that at least one hard disk have at least.There are two specific bugs I'm aware of thatĬause this type of problem, but there may be others: Won't boot or the computer will freeze during its power-on self-test (POST) ![]() Manifests as an inability to boot the computer - either a BIOS-mode OS ![]() Causes of IncompatibilityīIOS problems with GPT are quite peculiar, since as far as I know theīIOS should not attempt to read the disks, beyond verifying their presenceĪnd reading the boot code in the MBR. It must be emphasized that, as of 2022, BIOS is a fading technology you should not encounter such problems on most computers made since 2011, although enabling the CSM or using a GPT with a hybrid MBR can sometimes cause problems, as described on this page. This page exists to help you if you encounter such problems. Slowly because the BIOS power-on self-test (POST) takes an inordinately InĮither case, a computer with a GPT disk may not boot or will boot very The partition table type as a cue for what type of boot mode to use, thusĬausing problems when trying to boot in BIOS mode from a GPT disk. Provide a Compatibility Support Module (CSM), which enables them toīoot using BIOS-mode boot loaders. Furthermore, many modern computers with EFIs Unfortunately, in practice, there are occasional BIOS/GPT quirks or evenĭownright incompatibilities. Theory there should be no problem using GPT with BIOS-based computers. Loader and subsequent software to interpret the partition table. Partition table type used on the disk - it's the role of the boot which is so simple that it doesn't understand the In the past, most desktop, laptop, and server computers used a firmware knwon as the Basic Input/Output System Specification, so of course GPT works well with EFI-based computers. Today, new x86-64 computers ship with firmware known as the Extensibleįirmware Interface (EFI) or its variant, the Unified EFI (UEFI), which Note: This page is part of the documentation for my GPT fdisk program. If you find GPT fdisk or this Web page useful, please consider making a small donation to help keep this site up and running. This Web page, and the associated software, is provided free of charge and with no annoying outside ads however, I did take time to prepare it, and Web hosting does cost money. "template": "/ventoy/script/centos_kickstart.Legacy BIOS Issues with GPT Legacy BIOS Issues with GPT by Rod Smith, Web page update:, referencing GPT fdisk version 1.0.9 In normal case, a plugin may have a subdirectory under ventoy to hold related files, and define some json object in ventoy.json for configuration. It should be noted that, the json parser in Ventoy is very simple, please don't define too complicated structure and comment is not supported. There is a F5 Tools menu which you can make use to check the content of ventoy.json. The file must match the syntax of json and the outermost layer must be an object( ).įor json syntax you can check it with the 2 online tools as follows: Directory and file names areĪ json file ventoy.json must be placed under the ventoy directory (no subdirectory) as the configuration file. If you want to edit the ventoy.json file yourself, please continue to pay attention to the following content.Īll the plugins and their related files must be in ventoy directory in the first partition of the disk (along with the iso files and created by yourself). So it is recommended to use the VentoyPlugson for configuration, please refer to. The ventoy.json configuration is a little complicated.
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