I have added another small tutorial on how to boot Fedora 20 and CentOS 7 directly from an ISO file using grub4dos.
http://www.rmprepusb.com/tutorials/126_Fedora
I found that they are rather fussy in their requirements...
This method uses the cheat codes and does not use partnew command.
For Fedora, the ISO file does not need to be contiguous.
For CentOS, the ISO file does not need to be contiguous if it is well below 4GiB in size so it will fit in memory. CentOS-7.0-1406-x86_64-DVD.iso is just under 4GiB but the file must be contiguous as it is too large to load into memory.
Note that because we must use a FAT32 USB drive, we cannot have files over 4GiB.
http://www.rmprepusb.com/tutorials/126_Fedora
I found that they are rather fussy in their requirements...
This method uses the cheat codes and does not use partnew command.
For Fedora, the ISO file does not need to be contiguous.
For CentOS, the ISO file does not need to be contiguous if it is well below 4GiB in size so it will fit in memory. CentOS-7.0-1406-x86_64-DVD.iso is just under 4GiB but the file must be contiguous as it is too large to load into memory.
Note that because we must use a FAT32 USB drive, we cannot have files over 4GiB.
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