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grub4dos multiboot multipass usb boot iso

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#1326 steve6375


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Posted 03 April 2019 - 07:40 PM

I have now added a dual partition image containing both MiniPE-32 and MiniPE-64 to the Alternate Download Area so that you can now UEFI-32 and UEFI-64 boot from the E2B drive and then change the partitions to switch-in another payload, purely from within a UEFI environment.


Check out the blog article here if anyone wants to test it.


First, you need to select the .imgPTN payload file from a CSM boot or using SWITCH_E2B.exe under Windows.
But from then on, you can boot from any UEFI-32 system or any UEFI-64 system and select any partition image you want.


I cannot (i.e. don't want to) add rEFInd to the E2B menu partition for two reasons:


1. The E2B partition would need to be FAT32 which would limit the size of the ISOs it could hold (e.g. large Windows Install ISOs).

2. Some UEFI BIOSes will not offer the user the choice to CSM-boot if the E2B FAT32 partition contains an EFI boot file, so you could never boot to the grub4dos E2B menu and run Legacy ISOs, etc. on these systems.

Also tagged with one or more of these keywords: grub4dos, multiboot, multipass, usb boot, iso

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