root@kali:/home/mmajstor#
fdisk -l
Disk /dev/sdb: 238.5 GiB, 256060514304 bytes, 500118192 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
Disklabel type: dos
Disk identifier: 0xbdefbed0
Device Boot Start End Sectors Size Id Type
/dev/sdb1 * 2048 500115455 500113408 238.5G 7 HPFS/NTFS/exFAT
Disk /dev/sda: 931.5 GiB, 1000204886016 bytes, 1953525168 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
Disklabel type: dos
Disk identifier: 0x000837d6
Device Boot Start End Sectors Size Id Type
/dev/sda1 63 1953523119 1953523057 931.5G 42 SFS
Partition 1 does not start on physical sector boundary.
Disk /dev/sdd: 7.6 GiB, 8178892800 bytes, 15974400 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
Disklabel type: dos
Disk identifier: 0x9dcdecad
Device Boot Start End Sectors Size Id Type
/dev/sdd1 * 2048 8808447 8806400 4.2G b W95 FAT32
/dev/sdd2 8808448 15968255 7159808 3.4G 83 Linux
Disk /dev/sdc: 931.5 GiB, 1000194400256 bytes, 1953504688 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
Disklabel type: dos
Disk identifier: 0xe853fe39
Device Boot Start End Sectors Size Id Type
/dev/sdc1 64 903145535 903145472 430.7G 7 HPFS/NTFS/exFAT
/dev/sdc2 903158296 1953503999 1050345704 500.9G f W95 Ext'd (LBA)
/dev/sdc5 903158298 1928940614 1025782317 489.1G 7 HPFS/NTFS/exFAT
/dev/sdc6 * 1928940678 1953503999 24563322 11.7G 83 Linux
root@kali:/home/mmajstor# sudo grub-install /dev/sda
Installing for i386-pc platform.
error: invalid volume.
grub-install: warning: disk isn't LDM.
grub-install: error: embedding is not possible, but this is required for cross-disk install.
root@kali:/home/mmajstor#
sudo grub-install /dev/sdb
Installing for i386-pc platform.
Installation finished. No error reported.
root@kali:/home/mmajstor#
sudo update-grub
Generating grub configuration file ...
Found background image: /usr/share/images/desktop-base/desktop-grub.png
Found linux image: /boot/vmlinuz-4.12.0-kali1-amd64
Found initrd image: /boot/initrd.img-4.12.0-kali1-amd64
error: invalid volume.
grub-probe: error: cannot find a GRUB drive for /dev/sda2. Check your device.map.
error: invalid volume.
grub-probe: error: cannot find a GRUB drive for /dev/sda3. Check your device.map.
Found Windows 7 on /dev/sdb1
Found Kali GNU/Linux Rolling (kali-rolling) on /dev/sdd2
done