[xubuntu-users] Xubuntu on the Raspberry Pi 2/3/3B+

Yvo Brasseur yvo.brasseur at rendaosolutions.com
Tue May 15 10:51:19 UTC 2018

Hi Adam,

thanks a lot for the feedback.

I cannot pretend I understand it all,  but is this what I will try next :

1)  I copy all your files to an USB bootable stick, except bootcode.bin
     I plug it in one of the USB connectors

2) I copy the bootcode.bin on my bootable SD card and insert it.

3) I power on and see if I get to see a candidate disk to install on.



2018-05-13 23:13 GMT+02:00 Adam Smith <blondesaluki at gmail.com>:

> > Hi Adam,
> >
> > today I have been trying to install the version under
> > https://onedrive.live.com/?authkey=%21AN8MCHZJgb9DgG0&
> cid=78C0847849FED8F1&id=78C0847849FED8F1%21129&parId=root&action=locate
> >
> > I tried first with a USB stick with 2 partions (sudo fdisk/sdb1):
> > 1 with 3 GB, type c ( W95 FAT32 (LBA) ) and bootable (a),
> > 2) 5 GB same type
> > then saved with w.
> > ==> does not boot.
> >        I found out in the meantime that I still need to have an SD card
> to
> > boot the RPI, and have it point
> >        to the USB stick, but I'd rather not use an USB stick at all..
> (see
> > further)
> >
> > I then prepared an sd card, 8 GB, with the same partioning,
> > but one time with partition 2 as type 83 (Linux), and another as c (W95
> > FAT32(LBA).
> > I also tried making both partitions bootable, no change.
> >
> > ==> booted well in both cases
> > BUT: when the installation asks for a disk to install on, nothing
> appears.
> >
> > It then turns back to a desktop version like a live disk one.
> >
> > I did have a message 'driver 'sdhost-cm2835' already registered.
> > I opened the  the cmdline.txt file and changed"
> > modprobe.blacklist=sdhci_iproc"  to "modprobe.blacklist=sdhost-bcm2835"
> > but the message keeps coming back, and the disk for installation does not
> > show.
> >
> > Any suggestion how I could use the same sd card for installation process
> > AND the storing on 'disk' ?
> > I use the RPI3 iin a small box and there is no place for a USB disk.  I
> > have little space needs, and have a 64GB sd card in reserve..
> >
> > PS: the desktop seems to run well, except the firefox know issue.
> > I am going to test if "skypeforlinux" can run on it..
> >
> > Brgds,
> >
> > Yvo.
> >
> Thanks for trying it out!
> All 64bit capable Pi's are USB bootable.  With the Raspberry Pi 2 and
> 3B you have to set a one time programmable bit to turn it on, but with
> the Pi3B+ it is on by default.  USB booting can be a bit flaky though,
> I think a workaround is to put the bootcode.bin file on a sd card and
> it should boot from USB regardless of whether you've set the OTP bit
> or not.  Some pitfalls are using the wrong partition table and setting
> the esp flag.  In both cases it definitely won't boot.  I think the
> fat partition has to come first, but I'm not absolutely sure on that.
> Alternatively, if you are really struggling to get usb boot working,
> you can copy the bootloader and kernel/initrd files to a sd card.
> Once the initrd is loaded, the casper Linux package searches for the
> 'cd rom' with the rest of the files and this will be mounted as
> /cdrom.  The sd card can then be wiped by the installer.
> The above makes it sound complicated, but the installer works just
> like the installer on a normal computer.  So it is designed to be
> booted on one device (e.g. usb fash drive) and to be installed on
> another device (e.g. sd card or hard disk).  In the past I've used the
> 'toram' boot parameter to overcome this, but in xubuntu 18.04 it
> doesn't seem to want to unmount the /cdrom drive even when this is
> used.  That seems to be a generic bug?  I'm doubtful whether it would
> work on the Pi anyway since it has so little ram.
> If you only had a sd card and no usb flash drive, then you could
> pre-partition the drive as you describe and I would of thought you
> could of installed to the second partition.  It's been a while since
> I've done that, but I think that should be possible?  Maybe I'm
> getting confused with iso booting?
> Generally you don't need to pre-partition the drive that you want to
> install on (unless you want a specific partition layout).  The
> installer takes care of all that.  Have a look in the preseed folder,
> everything Pi related is in there.  I've commented everything so it
> should be understandable.
> The driver 'sdhost-cm2835' already registered error message can be
> ignored.  I can't do anything more about that (I raised a bug with
> patch weeks ago).
> Does any of that make sense?
> Adam


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