Boot from USB_pendrive

[demontager]

Can't make working boot from USB pendrive on Linux host, but works on WindowsXP-HOST (VB 3.0.6)
So my steps:
1. Unmount USB drive,
sudo fdisk -l
Device Boot Start End Blocks Id System
/dev/sdc1 * 1 1966 15785952+ c W95 FAT32 (LBA)

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sudo umount /dev/sdc1
dem@dem-laptop:~$ ls -al /dev/sdc1
brw-rw---- 1 root disk 8, 33 2009-09-16 18:18 /dev/sdc1

2.Changed permissions

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sudo chmod 777 /dev/sdc1 
dem@dem-laptop:~$ ls -al /dev/sdc1
brwxrwxrwx 1 root disk 8, 33 2009-09-16 18:18 /dev/sdc1

3. Created rawdisk:

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dem@dem-laptop:~$ VBoxManage internalcommands createrawvmdk -filename ~/mnt/new_usb12.vmdk -rawdisk /dev/sdc1 -register
VirtualBox Command Line Management Interface Version 3.0.4
(C) 2005-2009 Sun Microsystems, Inc.
All rights reserved.

RAW host disk access VMDK file /home/dem/mnt/new_usb12.vmdk created successfully.
dem@dem-laptop:~$ 

4. Set permissions for new_usb12.vmdk

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sudo chmod 777 /dem/mnt/new_usb12.vmdk
dem@dem-laptop:~/mnt$ ls -al new_usb12.vmdk 
-rwxrwxrwx 1 dem dem 628 2009-09-17 09:33 new_usb12.vmdk

5. Added new_usb12.vmdk as hard drive in VB, then started virtual machine, and here it shows me that it can't boot, but this disk bootable under real hardware and in Windows VB
Very strange for me, please help me find a way-out from this situation

p.s. Linux HOST-Ubuntu 9.04 amd64, VB-3.0.4

[Sasquatch]

Check the boot order, it appears it tries to boot from floppy first, and you have one mounted as such.

[demontager]

I checked, floppy disk wasn't connected. Anyway I made upgrade Vb to 3.0.6 ver, then recompiled it /etc/init.d/vboxdrv setup, then tried to boot from USB pendrive again, and now it does not show any information inside a virtual machine, just black screen.
Also once i tried to boot from pendrive, it again reset permissions for /dev/sdc1, so every new try I did sudo chmod 777 /dev/sdc1

[demontager]

After rebooting, tried again recreate usb.vmdk, then started machine and received same error as before:

for sure floppy not connected only hard drive in boot options

[Perryg]

AFAIK you can not boot from a USB drive in VBox. It simply is not there.

[Sasquatch]

AFAIK you can not boot from a USB drive in VBox. It simply is not there.

It should be possible in the way he does it, using RAW Disk. The USB is not mounted in the VM, nor on the Host for that matter but is visible and should be accessible for raw data reads.
Maybe the problem itself is the fact that it's a USB device and not a normal hard drive where RAW Disk was made for.

[demontager]

Yes, it should work, it fully and great works on Windows host, I am still trying no success on Linux...
P.S. tried also in Qemu, and same not works on Linux, but on Windows does.
I followed this post in order to get USB boot working on Windows:
http://agnipulse.com/2009/07/boot-your- ... irtualbox/