netkas.org

Archive for November, 2011

External gpu for hackbook

Thanks to your donations I was able to buy vidock 4+.

And now some reports of this thing working with hackint0sh:

First of all, you have to fix error 12 in windows or osx will just panic on boot. One of fixes is to lower ram size to 2.5gb.

Then, disable graphics enabler and install aty_init, otherwise you will get freeze at gray screen.

Then it works, tested with gt220.

bad thing is pcie x1 speed.

with aty_init it may work with macbooks with expresscard port.

More test at late December.

A fix for filevault2 security issue

Just made a fix for filevault2 issue i described earlier.

Here is compiled (from sources) 10.7.2 kernel and a source patch

By default this kernel forbids booting into single-user-mode for everyone, if firevault 2 protection is enabled.

But you can allow one user (e.g. admin or yourself) to boot system to single-user-mode.

to do this, boot into osx typing password for that account at efi login screen.

then run this command:

ioreg -l -w0 -p IODeviceTree | grep efilogin-unlock-ident

you will get result like:

| | “efilogin-unlock-ident” = <"4B012BC6-A948-2893-3454-B345307B8234">

copy the value – 4B012BC6-A948-2893-3454-B345307B8234

andd insert it into /Library/Preferences/SystemConfiguration/com.apple.Boot.plist under name suallow, just like in example bellow:



Kernel Flags
suallow=4B012BC6-A948-2893-3454-B345307B8234

So, now only the user you choosed can boot single user mode when FV2 enabled, and nobody else.

Now your files can be almost fully secured.

Migration assistant killing hackintosh and a way to fix it

If you would you migration assistant to transfer your account from hackintosh to Mac, you will notice that your hackintosh won’t be able to boot after it. This happens due to osx messing up some file so bootloader can’t boot it.

So, if it happened you need to fix it, with help of another osx copy on your pc.

A fix for single file with name “filename” is:

sudo su
cd folder_of_file
rm .SM.gul.filename
cp filename filename_
rm filename
mv filename_ filename

And the files you need to fix are(* is a wild card):
/*.aml
/mach_kernel
/Library/Preferences/SystemConfiguration/com.apple.Boot.plist
/System/Library/CoreServices/SystemVersion.plist

FileVault 2 is pointless sometimes

Imagine this:
1) You have a mac with Lion installed, you have administrative right on it
2) you wanna other people to be able to access the computer sometimes (like coworkers, roommates, etc) but do not be able to access your files ever, so you create non-administrative account for them
3) you enable filevault 2 to protect your files from being accessed by strangers (in office, for example)
4) user with account we created in pt. 2 and its password do this – reboot mac, hold down command+s on startup, then enters password for non-administrative account he has, and booting to single user mode with root access, game over, he has full access to all your files and even can change your password.

isn’t it a sick mindless design ?

Signs of early radeon 7xxx support in ATI drivers

As you might have heard, Tahiti is a nickname for next amd video cards, probably 79×0.

And guess what, there is some info about it in 10.7.3 beta drivers, in ATIRadeonX3000.kext:
(Read the article)

Thoughts on future MacPro

As Intel just released hexacore sandybridge-e chips and benchmarks started floating everywhere.

It’s clear that single core performance hasn’t improved compared to lga1155 sandybridge.

So, future quad-core MacPro (based on Xeon variant of core i7 3820 cpu) may just not worth it against 2011 iMac with core i7. Even hexacore MP performance would be questionable over sandybridge iMac.

And the price of dual socket system just gonna be a way too high for new chips.

Cayman and 10.7.2

A files to get Cayman cards (6970/6950) working in final 10.7.2 build – http://www.mediafire.com/?p9tlsbe3owms835

As usual, no msaa and etc, but most things work