install from linux without cd

[Thufir]

Following the install guide at:

https://help.ubuntu.com/community/Installation/FromLinux#Without_CD

how does grub fit into this?

I'll format sda:

thufir at dur:~$ 
thufir at dur:~$ df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/dur-root   27G   20G  5.4G  79% /
udev                  984M  4.0K  984M   1% /dev
tmpfs                 397M  840K  396M   1% /run
none                  5.0M  4.0K  5.0M   1% /run/lock
none                  991M  1.5M  990M   1% /run/shm
cgroup                991M     0  991M   0% /sys/fs/cgroup
/dev/sdb1             228M   48M  169M  22% /boot
/dev/sda1              73G   67G  1.9G  98% /media/5f433b3d-1710-4426-
abb6-3193e913bb70
thufir at dur:~$ 

I need to refresh grub, somehow, so that both sda and sdb are picked up 
on boot?



thanks,

Thufir