On Thu, Sep 3, 2015 at 12:41 AM, Fernando Peral <ferna...@samara.com.es>
wrote:


> I Installed GNU Radio live on a usb stick and I was changing some
> aspects of its configuration.
>

​What are you using to create the USB drive?​

I know hot to fix a normal grub2 installation, but as it is a grub2 on a
> casper filesystem I don't know how to fix it.  Any help please?
>

​I expect you'll find it easiest to start over from scratch.

For reference, when we create the live USB drives for our classes​, we use
Unetbootin, then replace the installed syslinux and grub configuration
files with these:

https://github.com/gnuradio/gnuradio-livesdr/blob/livesdr-snapshot/custom/grub/syslinux.cfg
https://github.com/gnuradio/gnuradio-livesdr/blob/livesdr-snapshot/custom/grub/grub.cfg

These have the extraneous menu options removed and allow the user to choose
between persistent and non-persistent modes.  The syslinux.cfg controls the
boot options when booting in legacy BIOS mode, and the grub.cfg controls
the boot options in UEFI boot mode.

-- 
Johnathan Corgan
Corgan Labs - SDR Training and Development Services
Intro to SDR Class -
​Nov. 2-3, Santa Clara, CA
Intro to SDR Class -
​Nov​
.
​4​
-
​5​
,
​Columbia, MD
http://corganlabs.com
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