Raspberry Pi 400 Network

I have entered various values into the set up for Networks on my new Pi 400 but now get a message on startup as follows :- Message from Desktop Machine startup has not completed: add net default gateway 192.168.1.254: File exists’ Cancel or Retry.
“Retry” gives the same message “Cancel” exits to Desktop and all seems OK. I can surf the net and can ping both ways.
I do not know what to do!!!! My Real Acorn RiscPC still works correctly.
Another question is how do I get the Pi 400 to be seen on my Virtual Risc PC running on a Windows PC. I have tried to use an Obey File similar to the one I use on the Acorn Risc PC but this does not appear to work.
One more question how do I get my data onto the Pi 400 from my other RiscOS machines, I have tried plugging in a USB connected HardDrive and all I get is an Icon with a figure 4 below but when I click to see the contents I am advised Error when reading SCSI::4$ – Disc not understood – has it been formatted? The Format option on the menu is greyed out! The disc is IDE not SCSI and I get the same result with a another harddrive, this one is SATA. I have been able to use a USB stick and transfered a PipeDream file on to the Pi400, had to change the file type to Pdream but when double clicked to load it I get “Control characters ignored” and all the data is useless to me. Help!!!!!!!

If you selected DHCP the ‘Gateway’ needs to be blank.

You can share the Rpi400 disk with the following command. It should then ‘show up’ in Virtual Risc PC.
Get the path name of the disk from the title bar of the filer window. e.g.

*share SDFS::HardDisc0.$ rpi400

Regarding attaching hard drives via USB… Are you sure the Pi is providing enough power for the drive? SSD drives are usually OK but you can get messages like those you’ve quoted if you use a spinning disc which is underpowered.

Transferring via a USB stick should work, but what format does the stick have? If it’s an MS DOS format then you may need FAT32FS running on RISC OS to cope with newer and bigger sticks. I don’t know whether it’s supplied and run by default these days.