i was prompt by GNU parted application to report a bug, so i am doing it :). Here is the message
"A bug has been detected in GNU Parted. Refer to the web site of parted
http://www.gnu.org/software/parted/parted.html for more information of what could be useful for bug submitting! Please email a bug report to
address@hidden containing at least the version (2.3) and the following message: Assertion (head_size <= 63) at ../../../libparted/labels/dos.c:662 in function probe_partition_for_geom() failed."
when i ran command "fdisk -l" on my desk top. I hope it would be helpful.