base/setup/usetup/bootsup.c: "C:\\bootsect.ros" should not assume "C:"

(A step to fixing CORE-13205: see 2_9.png.)

I didn't look too close, but it seems line 2363 should use something like "SystemRootPath->Buffer" too.

bootsect.ros grep

reactos/base/setup/usetup/bootsup.c

2322             wcscat(DstPath, L"\\bootsect.ros");

2363                                L"C:\\bootsect.ros",

Both are in

2249 InstallFatBootcodeToPartition(

I think there might be 3 cases:
*ROS on C: Trivial, no problem.
*ROS on D: Minor, works though file on wrong partition.
*ROS on C and D: Major, may overwrite/share (previous) file.