Clean memory said...

Good Information regarding RAM,HDD, UPS and AVR. But one thing which always pinches into my mind is, what exactly this "BSOD". Is that a Bug or else a clean memory idea. I would really be thankful to you if you send me a snap of it or else get that posted on to your website. Thank you in advance,

As on my experiences of being a technician for almost more than a year, BSOD is not a bug nor a clean memory. This is refer to an area within the RAM or HDD which is damaged(i dont know what is the exact term) or a faulty driver, meaning its an issue in hardware and software. This is usually happen upon loading system files. Initial files are loaded first into memory and when those files are not loaded then the BSOD will appear.

You should consider also the cleanliness of your memory bank and memory module. They should be free from dust to prevent lost connection. Use air compressor and lighter fluid as cleaning material.

http://bsod.org/
http://www.pcstats.com/articleview.cfm?articleID=1647

Limited or no connectivity!

On Windows environment, this means that you are not connected in the internet or other network resources. This issue has many causes of why it is happen. Here's the following reasons:

1. On wired and wireless network your Dynamic Host Configuration Protocol(DHCP) is down, this could be your ..
a. Internet Service Provider(ISP)
b. Router
c. DHCP Server - could also be a proxy server

2. Using of incorrect Wireless Equivalent Privacy(WEP) key or absence of it

3. IP Address misconfiguration or corrupted TCP/IP

4. Faulty wiring or wrong cable termination

5. Faulty Network Interface Card(NIC)

To get rid on this issue, check the status of your connection by doing the following solutions:
a. Check your IP configuration, if using a static DHCP be sure that there is no conflicts on your settings. If you are using a static IP, check the following;

*IP Address
*Gateway
*DNS or Proxy

To check it, open your terminal or command prompt and type this...

ipconfig /all

This will list down all the configurations in your NIC adapter.
When there's no IP supplied by your DHCP server then try this command..

ipconfig /renew

If still there is a problem, try to ping your DHCP server or your Default Gateway or any workstation within your LAN.

ping IP Address (ex. ping 192.168.1.1 or ping ictpro.asu.edu.ph)

Still unsolved? Check the DHCP configuration on your server(Proxy), Router configuration, and your ISP configuration.

b. Check your hardware
*Wire or Cable - termination(e.g straight through, crossover, rollover etc.)
- when checking the cable, use other working cable to check if the problem is the cable
*NIC or LAN Card
*Switch or Hub
*Router
*Bridge
*Other devices you are using

Note! Replacing(hardware) with the working one when troubleshooting is the best way in finding trouble.

How to connect on remote computer

SSH(Secure Shell) and TELNET are the most commonly used tools in remote connection. The only difference between them is the security they possessed. SSH uses encryption in order to avoid eavesdropping, connection hijacking, and other attacks doing by hackers. Other tools are RLOGIN, VNC, and FTP.

Users of TELNET, RLOGIN, VNC, and FTP should not rely on these tools because during connection their password is transmitted across the Internet unencrypted. Through the use of sniffing tools, hackers could easily sniff you.

How to install Cinelerra

1. First thing you have to do is to edit the source.list. Open the terminal and enter the following commands.

deb http://giss.tv/~vale/ubuntu32 ./
deb-src http://giss.tv/~vale/ubuntu32 ./

These are for 32-bit users, and for 64-bit is,

deb http://giss.tv/~vale/ubuntu64 ./

2. Update your source.list by typing this command into your terminal.

sudo apt-get update

3. Now that your source.list is up-to-date it's time to install the cinelerra now.

sudo apt-get install cinelerra

4. The next thing you have to do is to edit the configuration in order to modify it's memory allocation.

sudo vim /etc/sysctl.conf

then, add this syntax in the last part of the configuration file

kernel/shmmax=0×7fffffff

5. To avoid restarting enter this command in your terminal and press Enter.

sudo sysctl -p

Then run Cinelerra now. If you encountered some error as shown below saying that......then maybe there is a problem on your sysctl.config.

WARNING! Cinelerra is running in 0x2000000, which is have a very low memory.

As a solution, open your terminal and paste this command and press enter.

echo "0x7fffffff" > /proc/sys/kernel/shmmax


When running cinelerra and you've encountered a problem like this...

cinelerra: error while loading shared libraries: libGL.so.1.2: cannot open shared object file: No such file or directory

Try to run this command to fix it.

sudo ln -s /usr/lib/libGL.so.1 /usr/lib/libGL.so.1.2

How to partition hard drive on Ubuntu

Gparted is a good utility in partitioning hard drive on most Linux distros. This is akin to Disk Management of Windows. And you can format your hard drive in any file system you wanted to. To install it via terminal, use apt-get or aptitude. The syntax are "sudo apt-get install gparted" or "sudo aptitude install gparted". Installation would take a couple of minutes.

To run gparted just type "sudo gparted" and press Enter.

How to mount FAT & NTFS file system on UBUNTU (Gutsy)

Mounting windows file systems on Ubuntu is very simple task to do. First, open your terminal and execute as root. To do this follow the below commands.

1. su - (this if you're not going to use sudo command)

You will be prompted for your password. Just enter your root password.

2. Go to /media and create a directory for your device. Execute this command

cd /media
sudo mkdir "your directory name" (ex. sudo mkdir usb)

3. Then it's time to mount your device. Be sure that you know its device node(sdc, sdb, sda are the examples of this).

sudo mount -t "type of file system"-3g /dev/"device node" /media/"directory name you've been created"

ex. sudo mount -t ntfs /dev/sdb1 /media/harddisk1
sudo mount -t vfat /dev/sdb2 /media/harddisk2

Just provide your root password if asked.

NOTE! 3g is only applicable in ntfs file system.

That's all!

How to run Turbo C on Ubuntu

In order to run Turbo C on Linux. You'll need to install a third party programs such as Dosemu, DosBox, Wine, Crossover and other emulators that could interpret windows-based application.
In my part I'm using Dosemu. To install Dosemu just type this command in your terminal "sudo apt-get install dosemu" , then download the latest version of Turbo C compiler. Save it on your home directory. After downloading open your terminal and run Dosemu by typing this command "sudo dosemu". In your DOS window where Drive C: is your default drive type this command "cd d:(where D: is your /home directory)" and locate the TC folder you've downloaded. After getting into TC directory just type "TC" and the TCC window will appear. And,

Done!