Hi and special thanks to every one for his & her reply 
I am unfortunately a newbie for Linux and a little confused about this problem 
As your command i write my code readable from now 
there is a result of the output of caf4926’s code
code :
/dev/sda8 / ext4 acl,user_xattr 1 1
/dev/mapper/cr_sda7 /home ext4 acl,user_xattr,nofail 0 0
/dev/disk/by-id/ata-WDC_WD5000BEVT-08A0RT1_WD-WXF1A50N2132-part6 swap swap defaults 0 0
/dev/disk/by-id/ata-WDC_WD5000BEVT-08A0RT1_WD-WXF1A50N2132-part1 /windows/C ntfs-3g users,gid=users,fmask=133,dmask=022,locale=en_US.UTF-8 0 0
/dev/disk/by-id/ata-WDC_WD5000BEVT-08A0RT1_WD-WXF1A50N2132-part2 /windows/D ntfs-3g users,gid=users,fmask=133,dmask=022,locale=en_US.UTF-8 0 0
/dev/disk/by-id/ata-WDC_WD5000BEVT-08A0RT1_WD-WXF1A50N2132-part3 /windows/E ntfs-3g users,gid=users,fmask=133,dmask=022,locale=en_US.UTF-8 0 0
/dev/disk/by-id/ata-WDC_WD5000BEVT-08A0RT1_WD-WXF1A50N2132-part5 /windows/G ntfs-3g users,gid=users,fmask=133,dmask=022,locale=en_US.UTF-8 0 0
proc /proc proc defaults 0 0
sysfs /sys sysfs noauto 0 0
debugfs /sys/kernel/debug debugfs noauto 0 0
usbfs /proc/bus/usb usbfs noauto 0 0
devpts /dev/pts devpts mode=0620,gid=5 0 0
and the next one :
Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x2b228d36
Device Boot Start End Blocks Id System
/dev/sda1 1 13 102400 7 HPFS/NTFS
Partition 1 does not end on cylinder boundary.
/dev/sda2 13 6387 51200000 7 HPFS/NTFS
/dev/sda3 6387 17229 87088128 7 HPFS/NTFS
/dev/sda4 * 17229 60802 349993984 f W95 Ext'd (LBA)
/dev/sda5 38902 60802 175911936 7 HPFS/NTFS
/dev/sda6 17229 18273 8378287+ 82 Linux swap / Solaris
/dev/sda7 18273 25847 60846080 83 Linux
/dev/sda8 25848 38902 104855552 83 Linux
Partition table entries are not in disk order
Disk /dev/dm-0: 62.3 GB, 62305333248 bytes
255 heads, 63 sectors/track, 7574 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Disk /dev/dm-0 doesn't contain a valid partition table
and i want to say what i am did in installing the OS :
in partition step i rescan the Hard Disk and set the swap and root and home by manual by my self and i think maybe problem comes out from here 
and the other thing is that i see the error in system’s log when it comes up and it is about it can not mount the swap and in the partition of my OS it’s not mount.
there is the pics for help :
http://pic0.picsorlinks.com/ph_or_65350_30ed552.png
http://pic0.picsorlinks.com/ph_or_65383_bec873f.png
http://pic0.picsorlinks.com/ph_or_65384_9c5f865.png