Fwd: [Lubuntu-admins] 15.04 - Installation Experience

Nio Wiklund nio.wiklund at gmail.com
Mon Apr 27 05:28:42 UTC 2015


Den 2015-04-26 23:31, Aere Greenway skrev:
> On 04/26/2015 02:54 PM, Brendan Perrine wrote:
>> On Sunday, April 26, 2015 8:18:08 PM UTC, Aere Greenway wrote:
>>> I know it successfully wrote the GRUB-PC bootloader to the hard-drive
>>> of the machine being installed-to, because that system worked fine,
>>> and the new system is the one that is initially selected in the GRUB
>>> menu (it used to be a different system).
>>>
>>
>> If you have bootloadaer install problems with disks I find I sometimes
>> don't expeirence these problems. This can also happen if you have a
>> desktop with many disks in it but then again you may want a custom
>> setup if that is your usecase. I don't really think my mom would come
>> home from the store with a desktop with 3 disks inside it.
>> https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1431067 describes
>> one such problem I had but could never reproduce this with manual
>> partitioning. A recent jupiter broadcasting podcast from Fridat
>> suggest thsi might be more widespread and may also affect 14.04 in
>> which case getting this fixed for 14.04.3 will be really ncie since it
>> is long term support and what I would want most new or non technical
>> users on anyway.
>>
> Brendan:
> 
> All of my machines have multiple partitions, and I always do manual
> partitioning.  The USB drive itself (in this case) has only one
> partition, but often (not in this case) I create USB drives with an
> additional partition, which the USB drive system can access (as well as
> other systems), and read/write files from/to.
> 
> If it hadn't successfully written the GRUB-PC boot loader to the
> hard-disk (of the machine being installed-to), the other old system
> partition (Lubuntu 14.01.3) would have booted by default (the top menu
> entry in the GRUB menu).
> 
> The partition GRUB is last written-to becomes the system that boots
> by-default, and the newly-installed system became the top entry of the
> GRUB menu.
> 
> I have not (before 15.04) experienced the case where the USB drive
> becomes un-bootable after installing from it.  I have used USB drives
> for installing in several prior releases (though I started using
> Unetbootin only with 14.04 and 14.10).
> 

Hi Aere and Brendan,

I think there is a bug. This should not happen: Installing Lubuntu
should not alter the USB pendrive, from which it is being installed. I
doubt that the problem is the bootloader, because it boots to the
Unetbootin menu (if I understand correctly).

It seems to me that some configuration file of Unetbootin is written to
(overwritten) or saved in a bad way in the casper-rw file.

Maybe these questions can help you get further:

- What happens if you boot without persistence (if you still have that
system on the USB drive or are prepared to repeat the operations to 'get
there')?

- Would it work better with a casper-rw partition and ext4 for persistence?

- Would it work better if you sync the system manually (flush the
buffers) before shutting down or rebooting?

- What happens if you do the same procedure with another USB pendrive?
In other words, could it be caused by a defect of the pendrive?

Best regards
Nio



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