Why USB flash drive won't boot in Legacy mode?

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Ivan2015-10-23 21:45:13

UEFI

Ivan, 2015-10-23 21:45:13

Hello! I have a flash drive, at one time it will reflash the controller, it is defined as a USB HDD (for several partitions, but that's not the point) On the first partition, a multiboot image is flooded. I have been using it for several years, the menu is loaded on all computers and laptops. Sometimes in some cases you need to turn off UEFI boot and turn on Legacy. Or, in the boot menu, choose not UEFI USB HDD Flashka, but USB HDD Flashka. If it boots into UEFI, then I only have a choice of several installation images on a black screen. In general, attention is a question. At home, I broke my whole head - I can’t boot from it (although I probably used it on hundreds of computers at work). Booted only in UEFI. The boot partition of an MBR flash drive. I tried to edit the bootice MBR and PBR program on GRUB and BOOTMGR, but I stubbornly see my two UEFI partitions on the flash drive, LEGACY + UEFI is in the BOOT settings. On an old laptop, it perfectly sees the usual bootloader. Motherboard MSI mpower z77. Question for people who know how EFI works. What to remove on a flash drive, so that in principle it would always be loaded only in legacy?

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2 answer(s)

I

Ivan, 2015-10-23
@Amigo83

There is only UEFI and legacy + uefi) I thought about the IDE, but it seems to be useless in this situation ..
Everything ingenious is simple ... The fast boot mode was enabled (although it showed disabled) after the shutdown, legacy devices began to be displayed ..

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vladme078, 2015-10-23
@vladme078

Put in the bios not legacy + uefi, but only Legacy. In nutrition, try ide instead of ahci.