I'm in need of help to repair my Dual OS (Windows & Ubuntu), I installed Ubuntu after installing Windows 7 but GRUB menu doesn't show Windows 7 option to select.
I'm here to ask how can I make my computer a dual OS boot such that Windows 7 is already installed.
Disk /dev/sda: 40.0 GB, 40020664320 bytes
255 heads, 63 sectors/track, 4865 cylinders, total 78165360 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: 0x000abaf4
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 74010623 37004288 83 Linux
/dev/sda2 74012670 78163967 2075649 5 Extended
/dev/sda5 74012672 78163967 2075648 82 Linux swap / Solaris
Disk /dev/sdb: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 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: 0xf449f449
Device Boot Start End Blocks Id System
/dev/sdb1 * 63 251658224 125829081 7 HPFS/NTFS/exFAT
/dev/sdb2 251658225 503316449 125829112+ f W95 Ext'd (LBA)
/dev/sdb3 503316450 754974674 125829112+ 7 HPFS/NTFS/exFAT
/dev/sdb4 754974675 976768064 110896695 7 HPFS/NTFS/exFAT
/dev/sdb5 251658288 503316449 125829081 7 HPFS/NTFS/exFAT
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