problem with partprobe..
 

after using fdisk i get this error:
program partprobe is using a deprecated SCSI ioctl, please convert it to SG_IO.
but on reboot kernel reads the new partition table..
what is the problem ??

I don't think it's an error, it's a warning.

On boot, the partition table is read and the system boots up. That's good.

You get a warning that part of the code for partprobe is deprecated (outdated, or replaced by newer code). Partprobe should be updated by installing a newer version.