خیلی ممنون دوست عزیز مشکلم حل شد با دستور sudo update grub
ولی اگه امکانش هست برام توضیح بده بعداز نصب دوباره ویندوز با مشخصات زیر و با سی دی لایو ابونتو چجوربی گراب رو بگردونم
sudo fdisk -l
[sudo] password for mazaher:
Disk /dev/sda: 750.2 GB, 750156374016 bytes
255 heads, 63 sectors/track, 91201 cylinders, total 1465149168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x0c7a859b
Device Boot Start End Blocks Id System
/dev/sda1 * 63 235512899 117756418+ 7 HPFS/NTFS/exFAT
Partition 1 does not start on physical sector boundary.
/dev/sda2 235512961 1465124863 614805951+ f W95 Ext'd (LBA)
Partition 2 does not start on physical sector boundary.
/dev/sda5 235512963 645106139 204796588+ 7 HPFS/NTFS/exFAT
Partition 5 does not start on physical sector boundary.
/dev/sda6 645106203 765831027 60362412+ 7 HPFS/NTFS/exFAT
Partition 6 does not start on physical sector boundary.
/dev/sda7 849717248 1465124863 307703808 7 HPFS/NTFS/exFAT
/dev/sda8 765831168 833126399 33647616 83 Linux
/dev/sda9 833128448 849709055 8290304 82 Linux swap / Solaris
Partition table entries are not in disk order
Disk /dev/sdb: 4049 MB, 4049600512 bytes
128 heads, 41 sectors/track, 1507 cylinders, total 7909376 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xc3072e18
Device Boot Start End Blocks Id System
/dev/sdb1 * 24 7909375 3954676 b W95 FAT32
Disk /dev/mapper/cryptswap1: 8489 MB, 8489271296 bytes
255 heads, 63 sectors/track, 1032 cylinders, total 16580608 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x333b54a0
Disk /dev/mapper/cryptswap1 doesn't contain a valid partition table