goodsmans gd11fvrsd32 will not record?

my goodmans dvr has been playing up for a while (freezing, not turning off, recording the erong programme) but now will no longer access the library or record anything, i have tried retuning, & a factory rest & unplugging it overnight & now it keeps asking if i want to format the drive but i don't want to do that as i have recordings i still want to watch & don't want to loose them yet! Is there anything else i can try that won't delete the hours of recordings in the library?

kez
July 2012