Kernel truncates after trying to run it from virtual box

[drunkenfox]

After recently installing linux mint for OS development, I've ran into problems after copying the file to a floppy. First of all, I copy kernel.bin to the root of the floppy and make sure it is its original size. That goes fine. But, when I run off the floppy with virtual box and go into grub and type "kernel /kernel.bin", it gives me the well known error 13. I closed virtualbox and went back to the floppy, to find out that kernel.bin was 0 bytes in size

Any reason why this happens?

[NickJohnson]

I assume you have the floppy loopback-mounted somewhere. Did you unmount it properly before running the VM?

[bluemoon]

Did you sync?

[drunkenfox]

Alright, I'll use sync when I get home today. Just read about it and it should solve the problem.

[drunkenfox]

Thanks bluemoon, it worked