On Thu Jul 10 17:01:20 2014, 2bfjdsla52kztwejndzdstsxl9athp@gmail.com wrote: > This has nothing to do with perl. > > > Trying to seek and write to a block device (directly to the raw USB disk) > > fails with "Invalid Argument". > > > > 17275 perl CALL write(0x3,0x55c7a558000,0x1) > > 17275 perl RET write -1 errno 22 Invalid argument > > Raw disk device I/O must be block aligned. Writing a single byte > will always fail (except in the unlikely case that the disk has > a block size of 1). And so, rejecting this ticket. Tony --- via perlbug: queue: perl5 status: open https://rt.perl.org/Ticket/Display.html?id=122263