Boot from USB doesn't work

Hi everyone

I'm not new to Linux, but new to creating a bootable USB thumbdrive. Now, I've tried the Unetbootin-method twice and I've checked the MD5, and everything went smoothly.
But my computer won't boot from the USB stick. First of all, there are 4 types of USB to boot from:
USB-FDD (i assume: Floppy Disk Drive)
USB-ZIP (no idea)
USB-CD (the whole CD architecture is on the USB stick?)
USB-HDD (Hard Disk Drive)

Now, first of all: Does Unetbootin write a boot sector on my pendrive?
Which of those USB-types shall I choose to boot? Until now none of them has worked.

Specs: Windows 7 Ultimate, 64bit
Apacer 8GB flash drive
bt4-final.iso

How do I get this to work?

Thanks for your patience and explanations!

tschoppi

USB-FDD - External USB Floppy Disk Reader
USB-ZIP - External USB ZIP Disk reader
USB-CD - External USB CD/DVD reader
USB-HDD - USB Storage Device

If this is correct (I'm assuming here), you should choose the last option.
Also, check if you are using the latest version of unetbootin.

I downloaded unetbootin today from sourceforge. Filename: unetbootin-windows-393.exe
Maybe BIOS can't "see" the USB drive? Although I'm always catching something by the lines of "USB-drive FLASH device" or something like that...
It's just weird...

Have you followed any tutorial? If so, which one?

And you've formatted the USB stick to FAT32 before you tried Unetbootin? If you haven't, this should resolve your issue.

Go grab a copy of USB_Format.exe >> Actually, I have one you can use. >> Google Docs

Quote:

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Originally Posted by xX_Spiidey_Xx

Go grab a copy of USB_Format.exe >> Actually, I have one you can use. >> Google Docs

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One thing I don't understand: why use an external program if windows can format a usb drive by simply right-clicking on the drive?

I haven't used Windoze 7, and don't know if it will mount USB devices if they're formatted in a non-DOS format (IE Ext4).

Plus, it's a nifty little tool, not that it does much other than formatting.

Quote:

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Originally Posted by xX_Spiidey_Xx

I haven't used Windoze 7, and don't know if it will mount USB devices if they're formatted in a non-DOS format (IE Ext4)

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My windoze detects ext3 drives, but only because I installed a reiserfs driver. Natively it's not supported, but my guess is that if you insert a pen drive into a usb port and if windoze doesn't recognize the file system, it will ask the user to format the drive. I could be wrong, though.

im using window 7, and try using boot from USB... i just follow the tutorial and it runs smoothly i didn't encounter any problem

OK.
I'm back from skiing and I now went through the trouble of installing BT4 persistently on my laptop machine (which, BTW, was a good idea) and followed the tutorial on offensive-security.com
So after going through this whole trouble I expected my BIOS to boot from it correctly. But it now mumbles something about "incorrect floppy disk" and "try again"... And I even followed the tutorial very closely.
The error only occurred when using USB-HDD and USB-FDD as boot first device. The other two USB-* options just ended in no-output-let's-boot-from-the-HD.

You got any ideas? My creative thinking is at a wall right now...