It still seems to me like an issue with access to the target.
The NTFS partition should start on sector 65536 (on a 512 bytes/sector) so you can try using the PhysicalDrive as target.
Since 65535*512=33554432 that would be:
dsfi \\.\Physicaldrive1 33554432 4096 as512NTFS.bss
As a side note, do you have on both the machines a XP installed?
I.e. can you try the switcher.cmd "as is" on a XP OS? (just to make sure that there is not *something* else besides this kind of "protection" on Windows 8.x)