Re: [gentoo-user] Portable Gentoo (Pen Drive Linux)

[Francisco Ares]

Everyday learning something.... that's why I like Linux and, in special,
Gentoo.

Thanks
Francisco


2014-03-28 12:26 GMT-03:00 Nilesh Govindrajan <me@××××××××.com>:

> On 28-Mar-2014 8:55 pm, "Francisco Ares" <frares@×××××.com> wrote:
> >
> > Also, as for a bootable flash drive, if you use logical volumes for
> mount partitions, it works like a charm. If not, depending on the other
> physical drives, during boot, drive letters may change (I believe during
> the initramfs part of the boot).
> >
> > It was basically like this:
> >
> > - install a bare bones Gentoo system on a hard drive in the usual way,
> and make it do whatever you'll want when it goes to the pen drive.
> > - build the kernel with several modules built in, in special usb storage
> (of course) and all related to LVM (Gentoo Wiki is great!), and also, as I
> use "genkernel", there is a command line argument "--lvm"
> > - create a few partitions on the pen drive (on mine there are two, but
> one is enough), create logical volumes for /boot and / - or /root - at
> least)
> > - using grub2, in the file /etc/default/grub, the kernel command line
> should include "dolvm scandelay=10 rootdelay=10" (the numerical values are
> far from optimized).
> > - mount the root partition in another directory (so that other mounts
> would not appear), copy it to yet another directory, strip it down (since I
> use squashfs and it is read-only, there is no reason to have /usr/src ,
> /usr/include , /usr/portage and many others), then copy to the pen drive
> root partition; special care should be taken with /etc/fstab .
> > - umount your current /boot partition, mount the pen drive boot
> partition in /boot (just to make things look familiar), mount the hard
> drive boot partition elsewhere, copy its contents to the pen drive boot
> partition, and issue a grub-install to the pen drive disk (/dev/sdb, for
> instance) and grub-mkconfig -o /boot/grub/grub.cfg
> >
> > That's very incomplete, since, for instance and as already mentioned, I
> use a squashfs root partition, so I had to figure out some ways, using
> unionfs, to have a writable partition mounted on top of the read only one
> for /var and for /etc (at least).
> >
> >
> > 2014-03-28 12:00 GMT-03:00 Francisco Ares <frares@×××××.com>:
> >
> >> To auto log-in, I use a feature of "agetty":
> >>
> >> On /etc/inittab:
> >>
> >> # TERMINALS
> >> # c1:12345:respawn:/usr/bin/fbi -a -noverbose --nocomments
> /etc/splash/natural_altec/images/silent-1024x768.jpg
> >> c1:12345:respawn:/sbin/agetty --noclear 38400 tty1 linux
> >> c2:2345:respawn:/sbin/agetty 38400 tty2 linux
> >> c3:2345:respawn:/sbin/agetty 38400 tty3 linux
> >> c4:2345:respawn:/sbin/agetty 38400 tty4 linux
> >> c5:2345:respawn:/sbin/agetty 38400 tty5 linux
> >> c6:2345:respawn:/sbin/agetty -a AutoLogInUserName 38400 tty6 linux
> >>
> >> And for auto run, after auto log-in accomplished, I use ".bash_profile"
> on the auto logged-in user's home directory.
> >>
> >> Hope this helps
> >> Francisco
> >>
> >>
> >> 2014-03-28 11:15 GMT-03:00 Peter Humphrey <peter@××××××××××××.uk>:
> >>
> >>> On Saturday 22 Mar 2014 19:37:35 Neil Bothwick wrote:
> >>> > On Sat, 22 Mar 2014 13:57:22 +0000, Peter Humphrey wrote:
> >>> > > I've installed that old favourite SysRescCD on a pen drive,
> following a
> >>> > > method I found on the Web to include a persistent file-system with
> all
> >>> > > the extras I wanted in, e.g., /usr/local/bin.
> >>> > >
> >>> > > It works well, except that I haven't found yet where to put all my
> >>> > > aliases to have them sourced at (auto) log-in.
> >>> >
> >>> > There is a file that is executed by default at login, I think it
> >>> > is .autorun. I remember having to add an option to ignore it on the
> >>> > LXFDVDs because we use .autorun on those to launch a browser.
> >>>
> >>> I had a poke around and didn't get anywhere with .autorun, but
> eventually I
> >>> found that SysRescCD uses zsh, not bash. It hadn't occurred to me
> until then
> >>> to consider the shell. So that's why the auto-login function wasn't
> behaving
> >>> the way I expected.
> >>>
> >>> Thanks again Neil.
> >>>
> >>> --
> >>> Regards
> >>> Peter
> >>>
> >>>
> >>
> >
>
> You don't really need to use LVM, you just assign filesystem labels and
> use root=LABEL=...
>
> Or use UUID
>