Usb Kali (Not Live) Problem/Troubleshoot

Hi, new to these fora and kind of noob about Linux.

I know i can make a "usb live kali persistent" or a run a Virtual Machine of Kali on Windows, but i am trying to install Kali OS on a usb stick (16 gb). I am imagining it like an USB HDD.

So i use rufus (DD image and NOT ISO, 'cause it gives CD-ROM error), and make a Kali Live usb on another usb (32 gb). (2018.1 version).
I boot with it and proceed with installation "normally",using the 32 gb live usb to install Kali on the 16gb usb stick. I tell it to use "Guided: entire disk".
I then install grub on the 16gb usb stick. Installation completes normally.
After reboot, i F11 (boot menu hotkey) and hit the 16gb usb to boot.

All i get is black screen with a blinking cursor on the upper left corner. That is my problem.
I realise usb 2.0 speeds are low, so i have let it blink for over 20 minutes.
Physically ejecting the usb stick seems to have no impact. Putting it back, also. Different ports, also.

I think i am missing something critical.
I can't get to boot grub is all. Is it installed on wrong partition on USB?

PS: I've read about UEFI, GTP Partition, Secure Boot option, Fast boot etc, i don't think they apply to my problem.
Northbridge chipset is Intel P35
I also use the default option to put /home, /var and /temp all together or something like that, the newb approach, the first option.

PS II : Booting the 32gb live usb, gives me access to 16gb stick. I can see all linux folders, bin, boot, dev, etc, home etc. I can see file grub.cfg in 16gb/boot/grub.
fdisk -l gives

Device Boot Start End Sectors Size Id Type
/dev/sdc1 2048 22102015 22099968 10.6G 83 Linux
/dev/sdc2 22104062 30488575 8384514 4G 5 Extended
/dev/sdc5 22104064 30488575 8384512 4G 82 Linux swap / Solaris

and also a new device, not know if relevant.

Disk /dev/loop0: 2.6 GiB, 2775728128 bytes, 5421344 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

Where is grub installed, on /dev/sdc1 ?
What is a master boot record? Does usb has one? Is grub installed on MBR?
Why doesn't grub load? How to load grub?

Thanks in advance for your time, and your help.

At last i managed to install kali linux on a usb stick.

After answering no to whether i want to install grub on mbr, i installed grub MANUALLY on my usb stick, that was /dev/sdx. Where x is usually b or c, etc.

After reboot and choosing the usb to boot, i am able to get in kali.