Install grub on USB or HardDisk

install-grub-usb

  :: List disk and system file mounted
    
    # lsblk
    
      NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
      sdb      8:16   0 298,1G  0 disk 
      ├─sdb1   8:17   0    30G  0 part 
      └─sdb2   8:18   0     5G  0 part

  :: List device
    
    # fdisk -l    
    
      Disco /dev/sdb: 298,1 GiB, 320072933376 bytes, 625142448 sectores
      Unidades: sectores de 1 * 512 = 512 bytes
      Tamaño de sector (lógico/físico): 512 bytes / 512 bytes
      Tamaño de E/S (mínimo/óptimo): 512 bytes / 512 bytes
      Tipo de etiqueta de disco: dos
      Identificador del disco: 0x47ad2441

      Disposit.  Inicio Comienzo    Final Sectores Tamaño Id Tipo
      /dev/sdb1             2048 62916607 62914560    30G 83 Linux
      /dev/sdb2         62916608 73402367 10485760     5G  b W95 FAT32
    
    
  :: Umount all system file of /dev/sdb1 for start installation
  
  :: Create directory to mount sdb1
  
    # mkdir /mnt/usb
    
  :: Mount directory
  
    # mount /dev/sdb1 /mnt/usb
  
  :: Create directory for config file of grub
  
    # mkdir -p /mnt/usb/etc/default
  
  :: Copy grub binary
  
    # cp /etc/default/grub /mnt/usb/etc/default/
    # cp -a /etc/grub.d/ /mnt/usb/etc/
    
  :: install grub on /dev/sdb
  
    # grub-install --target=i386-pc --debug --boot-directory=/mnt/usb/boot /dev/sdb
    
  :: Creating config file
  
    # grub-mkconfig -o /mnt/usb/boot/grub/grub.cfg
    
    
    :: CONFIG FILE /etc/boot/grub/grub.cfg
    :: Create fat32 partition in hd0
    :: copy iso files into it
    
      menuentry "Start Windows Installation" {
        set root=(hd0,msdos2)
        insmod ntfs
        insmod search_label
        search --no-floppy --label WIN7
        ntldr /bootmgr
        boot
      }