I've a 64 bit Windows 8.1 on GPT / UEFI and am trying to boot to another OS without a CD-ROM or external harddisk.
I've created a fresh partition (
Z:) and copied Puppy Linux.iso over to it. However, I can't change the active partition to
diskmgmt.msc's "Mark Partition as Active" is grayed out:
active command also doesn't work:
–§– The selected disk is not a fixed MBR disk.
ACTIVEcommand can only
be used on fixed MBR disks.
I've also tried both EasyBCD and EasyUEFi, to no avail.
How can we change the boot partition and boot to another OS ?