| Andrew Cooke | Contents | Latest | RSS | Twitter | Previous | Next

C[omp]ute

Welcome to my blog, which was once a mailing list of the same name and is still generated by mail. Please reply via the "comment" links.

Always interested in offers/projects/new ideas. Eclectic experience in fields like: numerical computing; Python web; Java enterprise; functional languages; GPGPU; SQL databases; etc. Based in Santiago, Chile; telecommute worldwide. CV; email.

Personal Projects

Lepl parser for Python.

Colorless Green.

Photography around Santiago.

SVG experiment.

Professional Portfolio

Calibration of seismometers.

Data access via web services.

Cache rewrite.

Extending OpenSSH.

Last 100 entries

LPIR - Steganography in Practice; How I Am 6; Clear Explanation of Verizon / Level 3 / Netflix; Teenage Girls; Formalising NSA Attacks; Switching Brakes (Tektro Hydraulic); Naim NAP 100 (Power Amp); AKG 550 First Impressions; Facebook manipulates emotions (no really); Map Reduce "No Longer Used" At Google; Removing RAID metadata; New Bike (Good Bike Shop, Santiago Chile); Removing APE Tags in Linux; Compiling Python 3.0 With GCC 4.8; Maven is Amazing; Generating Docs from a GitHub Wiki; Modular Shelves; Bash Best Practices; Good Emergency Gasfiter (Santiago, Chile); Readings in Recent Architecture; Roger Casement; Integrated Information Theory (Or Not); Possibly undefined macro AC_ENABLE_SHARED; Update on Charges; Sunburst Visualisation; Spectral Embeddings (Distances -> Coordinates); Introduction to Causality; Filtering To Help Colour-Blindness; ASUS 1015E-DS02 Too; Ready Player One; Writing Clear, Fast Julia Code; List of LatAm Novels; Running (for women); Building a Jenkins Plugin and a Jar (for Command Line use); Headphone Test Recordings; Causal Consistency; The Quest for Randomness; Chat Wars; Real-life Financial Co Without ACID Database...; Flexible Muscle-Based Locomotion for Bipedal Creatures; SQL Performance Explained; The Little Manual of API Design; Multiple Word Sizes; CRC - Next Steps; FizzBuzz; Update on CRCs; Decent Links / Discussion Community; Automated Reasoning About LLVM Optimizations and Undefined Behavior; A Painless Guide To CRC Error Detection Algorithms; Tests in Julia; Dave Eggers: what's so funny about peace, love and Starship?; Cello - High Level C Programming; autoreconf needs tar; Will Self Goes To Heathrow; Top 5 BioInformatics Papers; Vasovagal Response; Good Food in Vina; Chilean Drug Criminals Use Subsitution Cipher; Adrenaline; Stiglitz on the Impact of Technology; Why Not; How I Am 5; Lenovo X240 OpenSuse 13.1; NSA and GCHQ - Psychological Trolls; Finite Fields in Julia (Defining Your Own Number Type); Julian Assange; Starting Qemu on OpenSuse; Noisy GAs/TMs; Venezuela; Reinstalling GRUB with EFI; Instructions For Disabling KDE Indexing; Evolving Speakers; Changing Salt Size in Simple Crypt 3.0.0; Logarithmic Map (Moved); More Info; Words Found in Voynich Manuscript; An Inventory Of 3D Space-Filling Curves; Foxes Using Magnetic Fields To Hunt; 5 Rounds RC5 No Rotation; JP Morgan and Madoff; Ori - Secure, Distributed File System; Physical Unclonable Functions (PUFs); Prejudice on Reddit; Recursion OK; Optimizing Julia Code; Cash Handouts in Brazil; Couple Nice Music Videos; It Also Works!; Adaptive Plaintext; It Works!; RC5 Without Rotation (2); 8 Years...; Attack Against Encrypted Linux Disks; Pushing Back On NSA At IETF; Summary of Experimental Ethics; Very Good Talk On Security, Snowden; Locusts are Grasshoppers!; Vagrant (OpenSuse and IDEs); Interesting Take On Mandela's Context; Haskell Cabal O(n^2) / O(n) Fix; How I Am 4

© 2006-2013 Andrew Cooke (site) / post authors (content).

Shoddy Macs

From: andrew cooke <andrew@...>

Date: Thu, 2 Feb 2012 18:18:25 -0300

How can any self-respecting engineer buy a computer where they *glue* the
cable to the disk?  These aren't machines made for people that take things
apart - they're made for *consumers* that never expect to get their hands
dirty.

Mac owning engineers: you're selling your souls for a shiny trinket.  These
aren't machines made, and made well, to be cared for.  They are intended as
disposable trophies.  Polished turds.

You should be ashamed of yourselves.  Really.

(Pauli's Macbook Pro is dead and I have it in pieces).

Andrew

Reinstalling OSX via Linux

From: andrew cooke <andrew@...>

Date: Sat, 4 Feb 2012 05:04:00 -0300

Pauli's Mac seems to be dead, but we've got hold of another, much more recent
MBP that "probably just needs OSX to be reinstalled".  It powers up, but
doesn't boot.  And there are no disks.

So I downloaded a torrent from PB, but had problems mounting the dmg file on
Linux (or an image created from it - see below).  As far as I understand it, a
dmg file is a compressed HFS+ file system, and an OSX install includes an ISO
image in a directory of that FS.  So you need to mount the FS, find the ISO,
and burn that - which is tricky if the FS won't mount on Linux (it's not clear
if the problem is Linux, or me).

But the second attempt using, I think,
http://thepiratebay.se/torrent/6823078/Mac.OSX.Lion.10.7.2-ADDiCT
was more successful.  That is a xar archive, rather than a dmg file, and you
can unpack it with xar from http://code.google.com/p/xar/

Unpacking showed a directory called InstallMacOSX.pkg, which included
InstallESD.dmg, which is a dmg compressed ISO image.

I then uncompressed InstallESD.dmg using dmg2img from
http://vu1tur.eu.org/tools/ which generated a "real" ISO.  Finally, I burnt
that to a DVD using cdrecord.  The MBP then boots from that and installs fine
- although it's just very slow compared with a Linux install (I don't know if
that's a real difference, or just because there's little feedback and long
periods of nothing but a spinning icon, or because I'm spoilt by recent
installs to SSD).

And I don't think the above is particularly illegal (the MBP would originally
have come with install disks), except that perhaps I have a more recent
version of the software than the original (I did try with Pauli's old disks,
but it wouldn't boot from those at all - I guess they were much too old).

Of course, it would all be much easier if we had a working Mac or the original
disks.

Andrew

Comment on this post