One of my friends offers me a method to boot Win7, Win8.1 and Win10 x64 from a removeable or fixed-disk drive which also supports UEFI-boot. The steps are:
1. Use GImageX to combine the three "install.wim"s to a large install.wim(more than 10 GB)
2. Create a FAT32 partition, put all files from the Win10 x64 .ISO into this partition without install.wim
3. Create a NTFS partition, put all files from the Win10 x64 .ISO into this partition without install.wim, and then put the modified install.wim in step 1
4. Use bootice to modify the BCD file in the FAT32 partition to link to the NTFS partition ←Maybe there is a better word to replace "link to"...
So I wonder can I make a .imgPTN file containing these 2 partitions?