How to make computer boot from usb flash?

Question

Iron

Using the unetbootin utility , I wrote the backtrack distribution kit from BT5R3 - KDE - 32.iso to
flash . txt ubnpathl.txt I put it in the BIOS in the boot settings first to boot the removable drive, but when booting up, the computer boots as usual, from the hard drive. Tried to connect flash via usb-hub and directly to one of the system unit slots. Desktop computer, mother asus P5QPL-AM, bios AMI 08.00.14

Answer 1

F8 and select flash drive

Answer 2

What could be the problem at the boot step:
1. The USB flash drive is detected not as a Removable Drive, but as an HDD. You should look at the order of the disks in BIOS
2. You have USB
3 support disabled in your BIOS. Booting from USB is prohibited in your BIOS.
4. You have a UEFI installation of Windows, and the BIOS is set to UEFI-only boot
5. You do not have enough RAM to place the image in memory
The easiest thing is to find the key combination to select the boot source (F8 usually, but not always)
Step by step:
1. Learn how to boot from a flash drive with something standard and small like NTPasswd
2. Learn how to write backtrack on a flash drive
3. Learn how to boot from this flash drive
1. Format the flash drive withhp usb disk storage format tool as FAT32 (start the utility as an administrator, the utility itself is googled)
2. Run UNetBootIn (with administrator rights), from the pre-define list, select something small (NTPasswd, for example), write, try to boot.
3. If everything is ok, then repeat with BackTrack.

Answer 3

It can be anything, but most likely the bootloader is missing.
I made myself a multi-boot flash drive, including with BT. I added it like according to the instructions www.rmprepusb.com/tutorials/how-to-make-a-usb-bootable-backtrack-4-drive . In any case, grub4dos decides.

Answer 4

Well, actually, for a thousand years now, a flash drive has not been a removable drive, but quite a hdd, at worst usb-hdd.
that is, you need to go into the BIOS in the list of boot order of hard drives and, among other drives, pull the flash drive to the top of the list, well, they will return the first boot from the hard drive back

Answer 5

well, plus immediately check:
is the partition on the flash drive the first one
and whether the bootloader has been installed in the first partition of the flash drive at all (even when you start it with administrator rights from under the seven, sometimes the bootloader is not installed, even crack) - check what it is now, and put it The BOOTICE program will definitely help

Answer 6

Lately I've seen the same nonsense on ASUS EeePC nonbooks. There Removable Drive is not exactly Flash. In general, if there are two partitions - Removable Drive and Hard Disk, then it might be worth going to the Hard Disk section - there I found my flash drive, it was the second after the hard one. We change places accordingly and voila.
At least I found such a glitch on my EeePC 1000H. Since the mother of ASUS, I assume that the problem may be the same.

Answer 7

1. We read about plpbt on the Internet. Accordingly, there will be no problems with the BIOS.
2. Check that these files are on a FAT32 partition with the boot flag set.
3. Make sure that the correct MBR is written on the flash drive. Windows and Linux have fixboot/fixmbr.