use [this](#create-a-microsoft-windows-based-flash-disk-image) recipe.
* **Changing the media type (CD-ROM or Flash) is possible only when the device is reconnected.** For V3, this can be done using
the switch `System -> Connect main USB`. In this case, the **media type is determined at the time of connecting the image, and not by clicking on the switch**.
The switch affects the settings of the future connection. For non-V3 devices, you need to either reboot your server or otherwise reinitialize the connection.
3. Create an empty file in `/var/lib/kvmd/msd/meta/` with the exact name (case sensitive!) of the uploaded image. This will indicate PiKVM that the uploaded image is okay and can be used. For example:
After that you will have access to the flash drive from the server.
:exclamation: Drive 0 represents a drive that is controlled via a web interface and API. Don't use it with kvmd-otgmsd if you don't know exactly what you're doing.
4. View the driver state:
```
# kvmd-otgmsd -i 1
Image file: /root/flash.img
CD-ROM flag: no
RW flag: yes
5. To disable the flash drive and view the files on it from the KVM, run:
```
# kvmd-otgmsd -i 1 --unlock --eject
```
:exclamation: This command will interrupt the current IO operation on **ALL DRIVES** including the one that is managed via the web interface. The same result is achieved by clicking the disable media button in the web interface. Right now, the Linux kernel does not allow to distinguish between internal threads that manage different drives. It is recommended to eject the media when you know that this will not cause problems for the other media.
6. Don't forget to remount the root filesystem to read-only mode:
This procedure will create a disk image of a USB stick. This is mostly required for Microsoft Windows (TM) based images since they are larger than the CDROM based limit of 2.2GB.
You can create a bootable USB stick with the normal Microsoft tools, e.g. Media Creation Tool.
Creating a bootable USB stick can also be made from an ISO file with other tools like Rufus.
Without resizing, the full size of the USB stick will be used, so keep the stick as small as possible (e.g. 4GB or 8GB) but still large enough for all Windows files. The Media Creation tool will tell you what the minimum size is.
Before creating the image file, you can use a tool like "EaseUS Partition Master Free" or "GParted" to resize the main FAT32 partition on the USB stick. This will save space on PiKVM.
You can also perform these steps on a separate unix machine and transfer the image over to pikvm with e.g. SCP.
Or, on Windows you could use a program like PassMark ImageUSB (only for full USB size images) or 'dd' for Windows to create the image. Then use WinSCP to transfer the image over to PiKVM.
Once you have the desired USB stick perform the following on the RPi to create the image directly to the PiKVM image storage folder.
1. Insert Windows based USB stick into Pi4, generated with Microsoft USB creation tool. SSH to PiKVM as root.
```
# dmesg
[ 3025.025401] usb-storage 2-1:1.0: USB Mass Storage device detected
