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How to view contents of xar archived Mac OS X installer packages

            Pacifist helps if you want to inspect a downloaded package to see what it will install before installing it. Pacifist opens Mac OS X .pkg package files, .dmg disk images, and .zip, .tar, .tar.gz, .tar.bz2, and .xar archives and allows you to extract individual files and folders out of them. Pacifist can be downloaded from here or here

UnlockRoot - An easy to use tool for rooting android devices

         UnlockRoot   is an easy to use android rooting application on windows.  Android rooting  is the process of allowing users of  smart phones ,  tablets , and other devices running the  Android  mobile operating system to gain  " root access " within Android's subsystem. UnlockRoot supports numerous number of android devices. UnlockRoot is regularly updated to support newer android devices. UnlockRoot can be downloaded from here .

How to cut/convert your miniSIM to MicroSIM or nano SIM?

                  We can convert our mini SIM cards to micro or nano SIM with the easy steps published at : http://www.airportal.de/nanosim/ . The web page has a simple PDF template which has instructions how to cut the SIM card into different shapes. the PDF template can be downloaded from here  too.  Note : All copyrights are owned by respective owners. for more details refer to : This is   released by Christian von der Ropp under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License (CC BY-NC-SA 3.0) http://creativecommons.org/licenses/by-nc-sa/3.0/

Fedora Live USB Creator

            The fedora liveusb-creator is a tool for easily installing live operating systems on to USB flash drives. This tool helps you to install the fedora linux on USB disk. The tool can be downloaded from here.

What is the difference between 802.11a/b/g/n wireless specifications ?

Here is the major difference in the form of simple chart :   802.11a 802.11b 802.11g 802.11n Operating Frequency 5.15Ghz - 5.35Ghz 2.4Ghz 2.4Ghz 2.4Ghz or 5Ghz Bandwidth Upto 54Mbps(actual 22Mbps) Upto 11 Mbps Upto 54 Mbps Upto 700Mbps Range 50 feet 100 feet 100 feet 50 Feet Cost More expensive Less expensive Less expensive More expensive Interference Less prone More prone More prone prone

How to backup and restore GPT header and table / MBR on mac ?

Mac OS X systems use GPT based partition table on a physical hard disk . Sometimes due to disk errors or any other reasons the GPT partition table may get corrupt. In such situations the operating systems restore the GPT table from the secondary GPT header lying at the end of the disk. There are some situations when secondary header is also corrupt then it is very hard to recover the partition schema of that disk. We can take a backup of the GPT table from the mac in the form a device file and can use it to restore back onto disk.  The GPT table and header of the disk can be backed-up as below :          $ sudo dd if=/dev/disk0 of=GPT bs=512 count=34 The GPT table and header of the disk can be restored as below :          $ sudo dd if=GPT of=/dev/disk0 bs=512 count=34 Similarly for MBR disks back up can be taken as below:          ...

How to remove firmware password prompt on mac if password is forgotten ?

We might end up  in a problem where we forgot the password which we have kept for firmware on mac.  We might see following screen when mac powers on, without leaving any option to reset the password using the DVD or any other mac os x installer disks. Firmware password prompt We  can remove this firmware password  prompt by resetting the NVRAM, by following below specified steps: Change the memory configuration of your mac either by removing one of the RAM's or by adding another RAM to existing setup. Turn on the mac, Immediately hold command + option + P + R keys on your mac keyboard Perform NVRAM reset  for 3 times (here you will hear mac chiming for 3 times ) Release the command + option + P + R keys.  This should have removed the firmware password prompt.