So I decided to create a bootable usb with my 64 GB SD card. I created a partition roughly half the size of the card to store files and apps from my Android Tab and created another partition from the remaining space to boot Kali from. Sine I couldn't use Rufus as it doesn't support creating bootable USBs from partitioned drives, I went ahead and installed UNETBOOTIN and chose the Kali partition and created a bootable usb from the second (Kali) partition. But when i booted into BIOS, and tried to select my SD card, I didn't even see it. I also tried changing the boot order to boot from USB, but again, nothing happened . When I inserted the SD card back into my Android Tab, it did load my apps, but along with the usual notification of "Tap here to transfer files", another notification appeared simultaneously reading ?SD card corrupt, tap here to fix?, even though my files and apps were perfectly fine. What do i do to boot from my partition?