installer put boot to hdd but system to ssd. How to fix

Question

I have a system with a HDD and a SSD. I was not wholly attentive when installing. I've done it many times on other systems and never had a problem so I was a bit trigger happy...

But with this system, somehow the HDD ended up being the boot drive while the SSD is the system drive. I don't understand at all, but that's what it looks like.

So I want to, I'm guessing here:

-- make the SSD bootable -- install GRUB to the SSD

Here's the fdisk listing:

   Disk /dev/sda: 931.53 GiB, 1000204886016 bytes, 1953525168 sectors
    Disk model: WDC WD10EAVS-98D
    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: 0x304fe66b

    Device     Boot Start        End    Sectors   Size Id Type
    /dev/sda1  *     2048 1953523711 1953521664 931.5G 83 Linux




    Disk /dev/sdb: 223.58 GiB, 240057409536 bytes, 468862128 sectors
    Disk model: KINGSTON SA400S3
    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: 0x1f87c004
    Device     Boot   Start       End   Sectors   Size Id Type
   /dev/sdb1          2048   1050623   1048576   512M  b W95 FAT32
   /dev/sdb2       1052670 468860927 467808258 223.1G  5 Extended
   /dev/sdb5       1052672 468860927 467808256 223.1G 83 Linux

Answer 1

I fixed this using info from Kurankat's link.

I fixed the grub by putting the grub to /dev/sdb

 sudo grub-install /dev/sdb
 sudo update grub

I did this with the system running off its main disk i.e. /dev/sdb. I did not need to use a livecd.

==

I fixed the boot problem with gparted.

Using the 'Manage Flags' menu option I unchecked boot on /dev/sda and checked boot on /dev/sdb1.

I've rebooted a couple of times dealing with other issues and it is working very well.