how to boot from usb hdd?

[EsTaF]

1. Add usb hdd dev in preferences.
2. Go to preferences>system but there are added any usb devices.

Is it a normal situation or I didn't change someone?

[mpack]

The VirtualBox BIOS does not support booting from USB.

[EsTaF]

Solved.
What I was testing.
diskutil list
....
/dev/disk4
#: TYPE NAME SIZE IDENTIFIER
0: FDisk_partition_scheme *1.0 TB disk4
1: Windows_NTFS 104.9 GB disk4s1
2: Windows_FAT_32 TALLIN 17.2 GB disk4s2
3: Windows_NTFS wd 878.1 GB disk4s3

##
sudo VBoxManage internalcommands createrawvmdk -filename localhost.vmdk -rawdisk /dev/disk4
sudo chown iron localhost.vmdk
sudo chgrp admin /dev/disk4
sudo chmod 660 /dev/disk4

was added as scsi dev in prefs.
solved, working. thanks.
Работает! Ура!!!