Bristol Digest, Vol 615, Issue 5

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Today's Topics:

1. Re: dd dev to dev multipartition and more... (Amias Channer)
2. Re: Nova T 500 no detection (Peter Hemmings)
3. Linux PC motherboard (Peter Hemmings)
4. Re: Linux PC motherboard (Alex Butcher (LUG))
5. Re: Linux PC motherboard (Rich Oliver)


----------------------------------------------------------------------

Message: 1
Date: Sun, 30 Aug 2015 14:32:04 +0100
From: Amias Channer <me@amias.net>
To: Bristol and Bath Linux User Group <bristol@mailman.lug.org.uk>
Subject: Re: [bristol] dd dev to dev multipartition and more...
Message-ID:
<CAMgU7XW5_Fz4wZOdZXEW-F0FbW7_H4Hn3NLOxueODri=jsikMQ@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

Hello luggers,

I got the impression that he wanted the boot sectors from the partitions.

Cheers
Amias
On 28 Aug 2015 17:31, "phil" <philssmith@btinternet.com> wrote:

> Hi
>
> You can't just dd from the larger partition to a smaller one because
> you cannot guarantee that all the data is contiguous from the start of the
> partition. The copy may work, it may not. Read the first answer to this
> question: it explains this better than I could.
> http://askubuntu.com/questions/409204/how-to-clone-to-a-smaller-harddisk
>
> Using dd to copy the entire disk will suffer from the same issue.
>
> (The following procedure includes the risk of trashing the original data
> so backup first if possible):
>
> 1) Use resize2fs to reduce size of source filesystem down to size of the
> destination partition (or a bit lower if possible to provide some headroom).
> 2) Use fdisk to reduce the size of the source partition to the size of the
> destination partition
> 3) Run dd to copy the partition to the destination partition both of which
> are now the same size
>
> After all the above it may seem safer, easier and quicker to create a new
> partition on the new sd card, format it and copy the files across using
> rsync or similar. And you will be right - this method is all these things.
> Why are you restricted to using dd?
>
> PS. It is usually better to provide a link rather than state: "and someone
> on internet suggests" This helps check the veracity of the statement and
> also to correct it if the information is incorrect. (which seems to be the
> case here because dd cannot tell what is and what is not garbage data).
>
>
> Cheers
> Phil Smith
>
>
> On 28/08/15 15:48, Alex Butcher wrote:
>
>> And make sure neither has any mounted filesystems when you do it.
>>
>> Best Regards,
>> Alex
>>
>> On Fri, 28 Aug 2015, Amias Channer wrote:
>>
>>
>>> Hello RT,
>>>
>>> Your second DD command is indeed overwriting the first partition with the
>>> second one. You might do better to run on DD command that does the whole
>>> disk not the just a partition.
>>>
>>> E.g. dd if=/dev/sdx of=/dev/sdy
>>>
>>> Cheers
>>> Amias
>>>
>>> On 27 Aug 2015 16:42, "RT" <rwatollenaar@gmail.com> wrote:
>>> Hi All and Anyone,
>>>
>>> been a while since I called upon some help here.....
>>>
>>> I have two sd cards one big one with Raspbian and another
>>> smaller one that is clean.
>>>
>>> I want to get the image of the first onto the latter and someone
>>> on internet suggests pluggin both in to a linux machine and
>>> dd-ing across
>>>
>>> dd if=/dev/sdxx of=/dev/sdyy
>>>
>>> The actual useful part of the image is much smaller than the
>>> size of the clean sd card and the claim is that losing the
>>> garbage should not hurt.
>>>
>>> dd would execute the above through some errors but it should
>>> work.
>>>
>>> 1-dd executes but gives no error
>>>
>>> 2-I have two partitions on the source sd card which I copied
>>> across
>>>
>>> dd if=/dev/sdx1 of=/dev/sdy1
>>> dd if=/dev/sdx2 of=/dev/sdy1
>>>
>>> which may be me overwriting the work of the first dd with the
>>> efforts of the second dd.
>>>
>>> In any event the result of all this cookery does not boot my
>>> raspberry Pi.
>>>
>>> Can anyone advise how best to get the larger image onto a
>>> smaller card, preferably without the use of things like GParted
>>> or other tools not available on a very basic linux distribution.
>>>
>>> Thanks.
>>>
>>> Roland.
>>>
>>>
>>> _______________________________________________
>>> Bristol mailing list
>>> Bristol@mailman.lug.org.uk
>>> https://mailman.lug.org.uk/mailman/listinfo/bristol
>>>
>>>
>>>
>>>
>> _______________________________________________
>> Bristol mailing list
>> Bristol@mailman.lug.org.uk
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>>
>
>
> _______________________________________________
> Bristol mailing list
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>
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Message: 2
Date: Sun, 30 Aug 2015 17:06:52 +0100
From: Peter Hemmings <peter@hemmings.eclipse.co.uk>
To: Bristol and Bath Linux User Group <bristol@mailman.lug.org.uk>
Subject: Re: [bristol] Nova T 500 no detection
Message-ID: <55E32A1C.8030307@hemmings.eclipse.co.uk>
Content-Type: text/plain; charset=windows-1252; format=flowed

Sorted!

Plugged card into another slot and it worked, then put it back into
original slot and it still works!!


On 28/08/15 23:53, Peter Hemmings wrote:
> Hi,
>
> I just tried to use Kaffeine and dont seem to have a card!
>
> dmesg | grep -i dvb shows nothing.
>
> As it always worked OK.
>
> Could someone confirm the order, does the board get detected then
> modules load!?
>
> I did try older kernels for fedora 22 but still the same lack of detection.
>
> Any other ideas as to what has happened and why?
>
>
> Will give the H/W some wiggling tomorrow but dont think that is the
> problem.
>
> Regards
>

Regards
--
Peter H



------------------------------

Message: 3
Date: Sun, 30 Aug 2015 17:16:08 +0100
From: Peter Hemmings <peter@hemmings.eclipse.co.uk>
To: Bristol and Bath Linux User Group <bristol@mailman.lug.org.uk>
Subject: [bristol] Linux PC motherboard
Message-ID: <55E32C48.8090002@hemmings.eclipse.co.uk>
Content-Type: text/plain; charset=utf-8; format=flowed

I think I will be upgrading soon and thinking of buying a new M/B. I
want a budget ATX board Asus/Gigabyte/MSI with HDMI that works with
Linux without any special drivers!
I was looking at Z97 chipsets and an i3 cpu but they seem mainly for
high spec "gamers" which I am not!

Any recommendations advice?

--
Peter H



------------------------------

Message: 4
Date: Sun, 30 Aug 2015 21:53:31 +0100
From: "Alex Butcher (LUG)" <lug@assursys.co.uk>
To: Bristol and Bath Linux User Group <bristol@mailman.lug.org.uk>,
Peter Hemmings <peter@hemmings.eclipse.co.uk>
Subject: Re: [bristol] Linux PC motherboard
Message-ID: <F676E47B-8035-47DB-B4B8-849168379BCF@assursys.co.uk>
Content-Type: text/plain; charset=UTF-8



On 30 August 2015 17:16:08 BST, Peter Hemmings <peter@hemmings.eclipse.co.uk> wrote:
>I think I will be upgrading soon and thinking of buying a new M/B. I
>want a budget ATX board Asus/Gigabyte/MSI with HDMI that works with
>Linux without any special drivers!
>I was looking at Z97 chipsets and an i3 cpu but they seem mainly for
>high spec "gamers" which I am not!

The Z97 is targeted more at overclocking/gaming, but the I3 isn't. The closest equivalent is the H97: http://skinflint.co.uk/?cat=mbp4_1150&xf=317_H97#xf_top

The savings may not be significant though.

>
>Any recommendations advice?

Best Regards,
Alex

--
Sent from my Android phone with K-9 Mail. Please excuse my brevity.



------------------------------

Message: 5
Date: Sun, 30 Aug 2015 23:21:56 +0000 (UTC)
From: Rich Oliver <richaoliver@yahoo.com>
To: Bristol and Bath Linux User Group <bristol@mailman.lug.org.uk>
Subject: Re: [bristol] Linux PC motherboard
Message-ID:
<1326684768.3143311.1440976916560.JavaMail.yahoo@mail.yahoo.com>
Content-Type: text/plain; charset="utf-8"

Hi there Peter,
I don't know if this interests you, but I could be tempted to sell my 2 year old Gigabyte GA-Z87-HD3 with Haswell i5 4670 and 16 Gig of DDR3 1600 Ram. So I can upgrade to a Skylake 6600.? The board's ATX and got HDMI. Anyway if you were interested you could swap it over and check it was all working under your Linux distro of choice before buying.
I've also got a 120 Gig Kingston SSD that I'd be interested in selling if you or anybody else is interested,,so I could upgrade that as well. I fancy a 250 Gig 850 Evo. It all works fine on multiple Linux distros, although I've got discrete Graphics card the internal HD 4600 Graphics worked fine when I tried them.
yours Rich





On Sunday, 30 August 2015, 17:16, Peter Hemmings <peter@hemmings.eclipse.co.uk> wrote:


I think I will be upgrading soon and thinking of buying a new M/B.? I
want a budget ATX board Asus/Gigabyte/MSI with HDMI that works with
Linux without any special drivers!
I was looking at Z97 chipsets and an i3 cpu but they seem mainly for
high spec "gamers" which I am not!

Any recommendations advice?

--
Peter H

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