I had Backtrack 4R2 and Windows 7 wokring in Dual boot fine until i decided to cut up and create a few new logical partitions out of an existing primary partition.

Now my computer cant load to the grub menu and instead shows "Grub error 15"

Boot info script Log: Part 1
Code:
                Boot Info Script 0.55    dated February 15th, 2010                    

============================= Boot Info Summary: ==============================

 => Grub 0.97 is installed in the MBR of /dev/sda and looks on the same drive 
    in partition #6 for /boot/grub/stage2 and /boot/grub/menu.lst.

sda1: _________________________________________________________________________

    File system:       vfat
    Boot sector type:  Vista: Fat 32
    Boot sector info:  No errors found in the Boot Parameter Block.
    Operating System:  
    Boot files/dirs:   /bootmgr /boot/bcd

sda2: _________________________________________________________________________

    File system:       ntfs
    Boot sector type:  Windows Vista/7
    Boot sector info:  No errors found in the Boot Parameter Block.
    Operating System:  Windows 7
    Boot files/dirs:   /bootmgr /Boot/BCD /Windows/System32/winload.exe

sda3: _________________________________________________________________________

    File system:       Extended Partition
    Boot sector type:  Windows Vista/7
    Boot sector info:  

sda5: _________________________________________________________________________

    File system:       ntfs
    Boot sector type:  Windows XP
    Boot sector info:  According to the info in the boot sector, sda5 starts 
                       at sector 63.
    Operating System:  
    Boot files/dirs:   

sda6: _________________________________________________________________________

    File system:       ext3
    Boot sector type:  -
    Boot sector info:  
    Operating System:  
    Boot files/dirs:   

sda7: _________________________________________________________________________

    File system:       ntfs
    Boot sector type:  Windows XP
    Boot sector info:  According to the info in the boot sector, sda7 starts 
                       at sector 63.
    Operating System:  
    Boot files/dirs:   /menu.lst

sda8: _________________________________________________________________________

    File system:       swap
    Boot sector type:  -
    Boot sector info:  

sda9: _________________________________________________________________________

    File system:       ext3
    Boot sector type:  -
    Boot sector info:  
    Operating System:  BackTrack 4 R2 Codename Nemesis
    Boot files/dirs:   /boot/grub/menu.lst /etc/fstab

=========================== Drive/Partition Info: =============================

Drive: sda ___________________ _____________________________________________________

Disk /dev/sda: 320.0 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders, total 625142448 sectors
Units = sectors of 1 * 512 = 512 bytes
Disk identifier: 0x97646c29

Partition  Boot         Start           End          Size  Id System

/dev/sda1                  63    24,579,449    24,579,387  1c Hidden W95 FAT32 (LBA)
/dev/sda2    *     24,580,096   372,001,139   347,421,044   7 HPFS/NTFS
/dev/sda3         372,001,140   625,137,344   253,136,205   f W95 Ext d (LBA)
/dev/sda5         372,001,203   414,621,584    42,620,382   7 HPFS/NTFS
/dev/sda6         414,621,648   455,635,529    41,013,882  83 Linux
/dev/sda7         455,635,593   506,497,319    50,861,727   7 HPFS/NTFS
/dev/sda8         506,497,383   514,497,689     8,000,307  82 Linux swap / Solaris
/dev/sda9         514,497,753   625,137,344   110,639,592  83 Linux


blkid -c /dev/null: ____________________________________________________________

Device           UUID                                   TYPE       LABEL                         

/dev/loop0                                              squashfs                                 
/dev/sda1        3C98-AC5D                              vfat       RECOVERY                      
/dev/sda2        62742F77742F4D5B                       ntfs       Windows 7                     
/dev/sda5        01CBCD1522D801E0                       ntfs       Windows XP                    
/dev/sda6        8ba0e3f6-1027-0000-94f7-806e6f6e6963   ext3       Ubuntu 10.10                  
/dev/sda7        01CBCD1537435D00                       ntfs       Data                          
/dev/sda8        1b293d79-a40b-4b40-80a1-b29a2c1f7018   swap                                     
/dev/sda9        0f4c5698-0a19-4ec6-9688-98e7b6b786d3   ext3       Backtrack                              

============================ "mount | grep ^/dev  output: ===========================

Device           Mount_Point              Type       Options

rootfs           /                        rootfs     (rw)
/dev/scd0        /media/cdrom0            iso9660    (ro,noatime)
/dev/loop0       /rofs                    squashfs   (ro,noatime)
/dev/sda9        /mnt/bt4                 ext3       (rw)