<div dir="ltr"><div class="gmail_default" style="font-family:trebuchet ms,sans-serif">When creating a system for the RP I have had a 100% success rate with the <a href="https://apps.ubuntu.com/cat/applications/usb-creator-gtk/">GTK-based Startup Disk Creator</a> under Ubuntu.</div><div class="gmail_default" style="font-family:trebuchet ms,sans-serif"><br></div><div class="gmail_default" style="font-family:trebuchet ms,sans-serif">'dd' has worked for me but I recall having to use some non-default block settings. One article suggests "bs=1m" as an arg to dd.</div><div class="gmail_default" style="font-family:trebuchet ms,sans-serif"><br></div><div class="gmail_default" style="font-family:trebuchet ms,sans-serif"><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On 8 March 2015 at 12:50, D. Hugh Redelmeier <span dir="ltr"><<a href="mailto:hugh@mimosa.com" target="_blank">hugh@mimosa.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I found an excuse to buy a Raspberry Pi 2. Mathematica was too slow on<br>
the Raspberry Pi B.<br>
<br>
We bought one at the Canada Robotix store in Markham. $48.99 + 6.37 tax.<br>
<br>
The RP2 uses Micro SD rather than normal SD and the software isn't<br>
100% compatible so I created a new MicroSD as the "hard drive".<br>
<br>
I used a SanDisk Extreme PLUS microSDHC UHS-1 32GB card (I had one on<br>
hand).<br>
<br>
I wanted to use the latest Raspbian because it is compatible with the<br>
RP2 and includes Mathematica.<br>
<br>
I tried several things before one worked. I'm writing this up to save<br>
others from frustration. These accounts are based on my unreliable<br>
memory -- I had no idea that it would have been worth taking notes.<br>
<br>
I was kind of improvising, starting from here<br>
<<a href="http://www.raspberrypi.org/downloads/" target="_blank">http://www.raspberrypi.org/downloads/</a>><br>
<br>
Spoiler: my current hypothesis is that my (Linux) desktop's SD<br>
interface is silently busted in some way.<br>
<br>
If you've done any of this, I'd like to hear how it worked for you.<br>
<br>
<br>
Attempt 1:<br>
<br>
- The card was brand new, already formatted with some FAT-family<br>
filesystem<br>
<br>
- I fetched the NOOBS Offline and network install<br>
<br>
- I installed the card in my desktop computer and used Linux unzip<br>
<br>
- I moved the card to the RP2 and powered it on.<br>
The green "reading SD" and orange or red "power" LEDS came on and<br>
stayed on, with no other visible activity. I gave up.<br>
<br>
<br>
Attempt 2:<br>
<br>
- same card<br>
<br>
- from my desktop machine, I dd'ed the RASPBIAN image onto the card<br>
<br>
- I tried to boot it. Same result.<br>
<br>
<br>
Attempt 3:<br>
<br>
- same card<br>
<br>
- booted Windows on a notebook and ran SD Formatter 4.0 (as prescribed<br>
in <<a href="http://www.raspberrypi.org/help/noobs-setup/" target="_blank">http://www.raspberrypi.org/help/noobs-setup/</a>>) to create just<br>
the right filesystem.<br>
<br>
- went to my desktop machine and unzipped NOOBS into the card<br>
<br>
- I tried to boot it. Same result.<br>
<br>
<br>
Attempt 4:<br>
<br>
- same card<br>
<br>
- booted Windows on a notebook and ran SD Formatter 4.0 (as prescribed<br>
in <<a href="http://www.raspberrypi.org/help/noobs-setup/" target="_blank">http://www.raspberrypi.org/help/noobs-setup/</a>>) to create just<br>
the right filesystem.<br>
<br>
- I used Windows to unzipped NOOBS into the card<br>
<br>
- I tried to boot it. It worked!<br>
<br>
================<br>
<br>
Early hypotheses that are refuted:<br>
<br>
- my microSD card was no good. Or not compatible with the RP2<br>
<br>
- my RP2 was no good<br>
<br>
<br>
Lingering hypotheses:<br>
<br>
- Perhaps my desktop's SD interface is silently busted. It is a<br>
common factor on all failures.<br>
<br>
- the preformatted filesystem that came on the microSD may not work<br>
for the RP2's boot system<br>
<br>
- Linux's unzip botches things some way. Perhaps some flag is needed.<br>
<br>
<br>
Experiments I should try (but may not):<br>
<br>
- retry each of the experiments that failed, but use Linux on my<br>
notebook rather than on my desktop.<br>
<br>
- see if my notebook can read and verify microSD cards written by my<br>
desktop<br>
---<br>
Talk Mailing List<br>
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</blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature"><div style="text-align:center"><div style="text-align:left">Evan Leibovitch</div><div style="text-align:left">Toronto Canada</div></div><blockquote style="margin:0 0 0 40px;border:none;padding:0px"><div style="text-align:center"><div style="text-align:left">Em: evan at telly dot org</div></div><div style="text-align:center"><div style="text-align:left">Sk: evanleibovitch</div></div><div style="text-align:center"><div style="text-align:left">Tw: el56</div></div></blockquote></div>
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