installing ubuntu from bootable usb, using lvm

[bruce]

Hi Sam.

In all honesty, I'm not sure I do (which is why talking directly with
someone would be seriously helpful).

I "think" I need LVM in order to be able to "tie" the
internal/external drives together in a manner that allows the OS to
reside on the internal ssd, while having the data on the external
drive. The connection/coupling of the external drive/dirs would be via
the LVM/symlink process.

And to your point about needed to always then carry the external
"working" drive or you have a brick, yep!  As I mentioned, fragile.

If you are in the US/North/South America, let's talk for a min!

thanks
-bruce


On Fri, Jul 18, 2025 at 7:28 AM Sam Varshavchik <mrsam at courier-mta.com> wrote:
>
> bruce writes:
>
> > So far, haven't found any tutorial with screen shots showing the
> > Install process invoking the LVM process (volGroup, LogicalVol, etc)
>
> Let's take a step back. Why do you believe you need an LVM?
>
> > Does anyone have any pointers/sites to illustrate this process?
>
> LVM is one of those things which are only needed if there's specific
> requirement, knowledge, and understanding what an LVM is, what it does, and
> how it works.
>
> Especially on a laptop.
>
> > I've seen a few sites that illustrate the partition setup:
> > example partition
> >
> > /dev/sda --- internal 128G ssd
> >  /dev/sda1  ext4  /boot     1G
> >  /dev/sda2  ext4  /root     1G
> >  /dev/sda3  swap           10G
> >  /dev/sda4  ext4  /       110G
> >
> > /dev/sdb --- exetrnal 1TB hdd
> >  /dev/sdb1  ext4  /etc     1G
> >  /dev/sdb2  ext4           10G
> >  /dev/sdb3  ext4  /       110G
> >
> > But then the examples, drop into "go ahead and then install"
>
> Right, and marry the laptop to the hard drive, forever. Any time you want to
> take your laptop somewhere you must lug this hard drive with it. Without it,
> your laptop becomes an unbootable brick. Because it contains the friggin' /
> filesystem.
>
> Because that's how LVM works.
>
> So, again, why do you think you need to use LVM?
>
> --
> ubuntu-users mailing list
> ubuntu-users at lists.ubuntu.com
> Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-users