On 10/28/2017 01:22 PM, Gene Heskett wrote:
Greetings;
I have partitioned and formatted this drive, and copied everything across
from the 2T hard drive to this one, (using mc) then used fdisk to toggle
the bootable flag, verified its set with gparted, and edited its copy
of /etc/fstab to use the numbers obtained from blkid to mount it in
fstab.
And I have edited the /boot/grub/device.map to use the
by-id syntax to define that SSD drive as opposed to the by-id of the 2T
drive. Those are all visible in /dev/disk/by-id when the 2T is
installed and a normal boot is done.
Removeing the 2T, and plugging the ssd into its cables, IMO it ought to
just boot. But where the initial grub loading line comes up with the 2T
installed, all I am getting is a blinking cursor. So grub isn't even
loading from it.
OK, so sounds like GRUB is not loading from the boot
sector. here are my instructions to do this, from a working
Linux system. (You can do this by booting off a live CD, or
plugging the won't-boot drive into another system.)
So, these are my instructions for making the drive bootable:
mount disk copy : sudo mount /dev/sdb1 /mnt/disk
sudo chroot /mnt/disk
sudo grub-install /dev/sda
Now, boot from copy of the disk, it will go to grub rescue >
(as it has no instructions on how to boot)
list partitions :
ls
find and list the boot directory:
set root=(hd0,1)/boot
ls ( you will see the exact file
names in the /boot directory)
insmod linux
linux (hd0,1)/boot/vmlinuz-x.x.x-xx-generic root=/dev/sda1
initrd initrd.img-x.xx.x-xx-generic
boot (this will do a one-time boot of the system)
then, once the system is up :
sudo grub-install /dev/sda
sudo update-grub
Now, the system should be able to boot automatically.
Jon
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