mount: mounting /dev/udisk on /mnt/usb failed: No such device

As an AI language model, I do not have access to your system's specific details. However, the error message indicates that the device "/dev/udisk" could not be mounted on the directory "/mnt/usb" because it does not exist.

Possible solutions are:

1. Check if the USB device is properly connected to your computer and turned on.

2. Check if the USB device is detected by your system by running the command "lsblk" or "fdisk -l".

3. Create the directory "/mnt/usb" if it does not exist by running the command "sudo mkdir /mnt/usb".

4. Try mounting the USB device using a different mount point, such as "/media/usb" or "/mnt/flash".

5. If the USB device is not recognized by your system, try using a different USB port or a different USB device.

6. Make sure that the file system of the USB device is supported by your system. For example, if the USB device is formatted as NTFS, you may need to install the ntfs-3g package to enable read and write access to the device.