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I have a 64GB GPT USB stick, containing EFI installer partitions for Windows 7, Windows 10, 5 linuxes, and a Clover BootLoader to launch an El Capitan installer for Hackintosh. It all works absolutely perfectly and as a support specialist means I have everything on one drive which I keep in my wallet.
So what's the issue?
As soon as I resize any of the partitions using gparted (version 0.19.0-3build1), the problem occurs. Resizing completes without error. gdisk shows no error, everything seemingly is perfect.
The problem is that following a resize (can be of any partition on the disk), when I reboot and boot into the windows 7 EFI installer, it now complains there is a problem with Microsoft/Boot/BCD (missing or corrupt). No amount of coaxing or resizing back to how it was will make any difference. The files are NOT corrupt, they are perfectly intact. The only way to fix it is to delete the partition and re-add it, then retransfer the files.
Am i missing something? Why should resizing a partition break things in this way. The linux installers are unaffected. It only affect windows.
Thanks Pingers.