Portege 3480CT: how to make a USB bootable floppy drive?

I need help to make a USB bootable floppy drive.
My laptop 3480CT has not the traditional floppy drive instead, it uses a USB floppy drive and the bios has an option to boot from USB FDD.

I would like to use a USB key to start (a Lexar Jumpdrive 32 MB 05dch 0080 h and GTX 1 GB 1516 h pid pid 8628 h), instead of the floppy. I want to load the boot XP on floppies, so I run recovery programs using chkdsk.

I tried the usual suspects, the bootloader makebootfat and mkbt20 HP.
I tried the demo version of the commercial product Flashboot.
I photographed a floppy back 5.0 system on the USB key using the I-Setup demo.
All failed including the specific option in the makebootfat images for FDD option and 3 different options of Flashboot.

I ran
http://Enos.itcollege.EE/~mkalme/Pahn/tut/tut.html

Using Hexplorer ICY, I was able to confirm that the DOS5.0 on the boot sector pendrive is identical to the diskette.
I could start in Dos5.0 from a floppy disk with drivers USB Panasonic and confirm that my Lexar was a system of 1.44 MB disk and command.com displayed in the directory. The GXT is not recognized by the Panasonic, nor BACK USB drivers to Duse 4.4 4.9. Another worrying indicator, it is my computer XP did not see all of the files on the pendrives, not command.com, or two hidden files (view all the hidden files option).

I learned that Transcend a specific option that creates a bootable 1.44 mb floppy
image on their USB key.

Here is what I have gathered, corrections and suggestions are welcome.

Interface USB the USB protocol specifications

bInterfaceSubClass field specifies the Protocol
01 order reduced block (RBC) a flash device
UFI 04 a floppy drive floppy drive
05 FDD SFF-8070i SFF-8070i command blocks however, funding may be in a different subclass for example RBC

bInterfaceProtocol field specifies the transport protocol
00 control/Bulk/Interrupt (CBI) with break of completion for FFD only
01 CBI without interruption of completion for the FDD only
transport in bulk only 50 h, including priming

I don't know if the USB controller must imitate the FDD Protocol.

Any ideas?

Hello

You cannot boot from the USB key.
The BIOS of the laptop does not support something like that.
Laptop factory supports and use different BIOS versions. As far as I know on this laptop Toshiba BIOS was installed.

To my knowledge this BIOS does not support booting from the USB key, but only the HDD, ODD, LAN or USB - FDD.
If you want to boot from USB FDD, you can create a bootable FDD floppy.
Windows operating system creates the boot floppy drive when you right click on the connected floppy drive and select format. Then simply choose the option create MS-DOS startup disk start.

Tags: Toshiba

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