Unmountable boot volume toshiba?

This is a problem I've asked questions about before. I have an older toshiba satellite A205 that will not boot in any mode. Found out how to freeze the blue screen (by disabling auto reboot on system failure). And it says unmountable boot volume. I looked up online to find out how to fix this. The problem is I do not have an xp disk, or recovery disk. Is there any way I can get around this to back up an irreplaceable video before reformatting my hard drive? Does it even need to be reformated?