Boot confusion

Jack McGee jack at greendesk.net
Sun Jun 6 20:28:35 UTC 2021


I am refreshing hard drives in my computer running 20.04.

Purchased new Seagate Exos 14tb spinning drive for /home.

I think I have succesfully moved /home to

/dev/sdc1


I have older 250gig ssd as my boot drive (I thought)

"/dev/sda1                  229G  169G   48G  78% /"

But apparently, I need one of the older hard drives to boot. The 1tb ssd.

Where is grub sitting?

I have to tell the BIOS to boot off the 1tb drive to boot.

If I tell it the 250gig SSD it stop at loading operating system.


How can I get it to boot off the 250gig drive.

And to complicate it further I have purchased a 1tb SSD I want to boot off.




> jack at Desktop:~$ lsblk
> NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
> loop0    7:0    0   9.1M  1 loop /snap/canonical-livepatch/99
> loop1    7:1    0 138.9M  1 loop /snap/chromium/1589
> loop2    7:2    0 141.4M  1 loop /snap/chromium/1608
> loop3    7:3    0  99.2M  1 loop /snap/core/11167
> loop4    7:4    0  55.4M  1 loop /snap/core18/2066
> loop5    7:5    0  55.5M  1 loop /snap/core18/1997
> loop6    7:6    0   9.1M  1 loop /snap/canonical-livepatch/98
> loop7    7:7    0    99M  1 loop /snap/core/11081
> loop8    7:8    0 140.7M  1 loop /snap/gnome-3-26-1604/100
> loop9    7:9    0 140.7M  1 loop /snap/gnome-3-26-1604/102
> loop10   7:10   0  65.1M  1 loop /snap/gtk-common-themes/1515
> loop11   7:11   0   2.2M  1 loop /snap/gnome-system-monitor/157
> loop12   7:12   0    51M  1 loop /snap/snap-store/498
> loop13   7:13   0    51M  1 loop /snap/snap-store/518
> loop14   7:14   0 217.9M  1 loop /snap/gnome-3-34-1804/60
> loop15   7:15   0   219M  1 loop /snap/gnome-3-34-1804/66
> loop16   7:16   0   2.2M  1 loop /snap/gnome-system-monitor/148
> loop17   7:17   0 162.9M  1 loop /snap/gnome-3-28-1804/145
> loop18   7:18   0 161.4M  1 loop /snap/gnome-3-28-1804/128
> loop19   7:19   0 295.6M  1 loop /snap/vlc/2288
> loop20   7:20   0    84K  1 loop /snap/ncdu-kz6fittycent/18
> loop21   7:21   0 295.3M  1 loop /snap/vlc/2103

> jack at Desktop:~$ df -h
> Filesystem                 Size  Used Avail Use% Mounted on
> udev                       1.8G     0  1.8G   0% /dev
> tmpfs                      374M  1.7M  373M   1% /run
> /dev/sda1                  229G  169G   48G  78% /
> tmpfs                      1.9G  1.1M  1.9G   1% /dev/shm
> tmpfs                      5.0M  4.0K  5.0M   1% /run/lock
> tmpfs                      1.9G     0  1.9G   0% /sys/fs/cgroup
> /dev/loop0                 9.2M  9.2M     0 100% 
> /snap/canonical-livepatch/99
> /dev/loop1                 139M  139M     0 100% /snap/chromium/1589
> /dev/loop2                 142M  142M     0 100% /snap/chromium/1608
> /dev/loop3                 100M  100M     0 100% /snap/core/11167
> /dev/loop6                 9.2M  9.2M     0 100% 
> /snap/canonical-livepatch/98
> /dev/loop4                  56M   56M     0 100% /snap/core18/2066
> /dev/loop7                  99M   99M     0 100% /snap/core/11081
> /dev/loop5                  56M   56M     0 100% /snap/core18/1997
> /dev/loop8                 141M  141M     0 100% /snap/gnome-3-26-1604/100
> /dev/loop10                 66M   66M     0 100% 
> /snap/gtk-common-themes/1515
> /dev/loop9                 141M  141M     0 100% /snap/gnome-3-26-1604/102
> /dev/loop11                2.3M  2.3M     0 100% 
> /snap/gnome-system-monitor/157
> /dev/loop12                 52M   52M     0 100% /snap/snap-store/498
> /dev/loop13                 52M   52M     0 100% /snap/snap-store/518
> /dev/loop15                219M  219M     0 100% /snap/gnome-3-34-1804/66
> /dev/loop16                2.3M  2.3M     0 100% 
> /snap/gnome-system-monitor/148
> /dev/loop14                218M  218M     0 100% /snap/gnome-3-34-1804/60
> /dev/loop17                163M  163M     0 100% /snap/gnome-3-28-1804/145
> /dev/loop18                162M  162M     0 100% /snap/gnome-3-28-1804/128
> /dev/loop19                296M  296M     0 100% /snap/vlc/2288
> /dev/loop20                128K  128K     0 100% 
> /snap/ncdu-kz6fittycent/18
> /dev/loop21                296M  296M     0 100% /snap/vlc/2103
> /dev/loop22                 65M   65M     0 100% 
> /snap/gtk-common-themes/1514
> /dev/sdc2                  1.5T   69M  1.5T   1% /mnt/sdb2
> /dev/sdc1                  9.7T  1.5T  7.8T  16% /home
> /dev/sdd7                  154G  117G   30G  81% /mnt/sda7
> /dev/sdd5                  106G  2.1G   99G   3% /mnt/sda5
> 192.168.1.105:/mnt/media3  4.6T  4.1T  250G  95% /mnt/media3
> 192.168.1.105:/mnt/media6  3.6T  2.9T  536G  85% /mnt/media6
> 192.168.1.105:/mnt/media7   96G   37G   55G  40% /mnt/media7
> 192.168.1.105:/mnt/media5  3.6T  108G  3.3T   4% /mnt/media5
> 192.168.1.105:/mnt/media1  2.7T  2.1T  530G  80% /mnt/media1
> 192.168.1.105:/mnt/media4  2.7T  202G  2.4T   8% /mnt/media4
> tmpfs                      374M   16K  374M   1% /run/user/1000
> pCloud.fs                  2.0T  575G  1.5T  29% /home/jack/pCloudDrive





More information about the ubuntu-users mailing list