installing ubuntu from bootable usb, using lvm

[bruce]

Hi Tony!!

Thanks for the replies.

On Fri, Jul 18, 2025 at 12:43 PM Tony Arnold <a.c.arnold at gmail.com> wrote:
>
> On Fri, 2025-07-18 at 11:26 -0400, bruce wrote:
> > got it.
> >
> > problem with that, I don't want to have all apps/os on the 128
> > internal.
>
> I presume mean 128GB? That's plenty big enough for an Ubuntu install.
>
    right, for the initial OS install, I would place on the internal 128G ssd

>
> > with databases, test apps, etc..  it could fill up.  which is why
> > I've been looking at the ability to symlink/lvm.
>
> Do you have large databases? Is that what could fill it up? In which
> case put those on the external hard drive.

    again, right, but to simply "place them on the hdd", I'd have to
make changes to dirs for the database, whereas if I symlinked, the
drive locations would stay the same.

>
> I'm not sure what you had in mind with LVM, but making the internal and
> external drives all part of the same volume group, I think could be
> disastrous! And from what you've said so far, I don't think that it's
> necessary.
>
> You could, for example, just have the external drive automounted to a
> suitable directory in your $HOME folder, or even to $HOME itself. I
> suggest the former so that your system is still usable without the
> external drive plugged in.

   I generated a rough list of the apps/stuff that I would imagine
would be installed onto the laptop, and based upon the install dirs, I
would then symlink these dirs from the internal ssd to the external
hdd dirs, which should work.  But again, to your point, if the
external drive isn't available, it breaks.

>
> > why are you suggesting not doing this?  aside from the facility.  as
> > I've mentioned other sites have suggested symlinking as a workable
> > method.  but again, I have 0 insight into the authors backgrounds.
>
> Yes, you can symlink from the external drive to the internal, but not
> for OS directories. Just do this in your home directory.
>
> Regards,
> Tony.
>
> P.S., Top posting is considered a bad thing for mailing lists!
    --thanks!! again for the replies.


>
> --
> Tony Arnold; Retired computer scientist; a.c.arnold at gmail.com; +44 7521
> 071138
>
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