research design development

mars69 Martin Cvrcek

Dual Boot Windows 7 with XP

Initial conditions:
  1. C:\ drive to install Windows 7,
  2. drive for example F:\ ready to install Windows XP.
Problem: If you install Windows XP operating system on a Windows 7-based computer, Windows 7 no longer starts. In this case, only the Windows XP operating system starts. Solution for dual boot Windows 7 with XP:
  1. Start Windows 7 System Recovery Discs and repair existing Windows 7 instalation (if you don't have any, you can download Windows 7 System Recovery Discs).
  2. As administrator copy file F:\ntldr and F:\boot.ini into root C: (because to run a version of Windows operating systems based on Microsoft Windows NT, these files are necessary).
  3. Edit file C:\boot.ini 
    [boot loader]
timeout=30
default=multi(0)disk(0)rdisk(0)partition(3)\WINDOWS
[operating systems]
multi(0)disk(0)rdisk(0)partition(3)\WINDOWS="Windows XP" /fastdetect /NoExecute=OptIn
    Note: You can change bold written text, partition number depends on the partitioning: 
    default=multi(0)disk(0)rdisk(0)partition(2)\WINDOWS
  4. Restart the computer.
Post-installation verification:
Media_httpwwwmars69co_jebbp
Click Start, click Accessories, right-click the command-prompt shortcut, and then click Run as Administrator. Use Bcdedit.exe for verification entry in the BCD Boot.ini file for the earlier version of the Windows operating system, more http://support.microsoft.com/?scid=kb%3Ben-us%3B919529&x=18&y=10

Stop search engines indexing your web

1 Theoretical possibility

1.1 /robots.txt - robots exclusion file

Create file /robots.txt: 
User-agent: *
Disallow: /
Search Engine Support: Google, Yahoo, Bing, ...

1.2 Use page meta tags robots

<meta name="robots" content="noindex,nofollow" />

2 The only sure method

2.1 Password protected web - web server solution

Example for Apache server: httpd.apache.org/docs/2.0/programs/htpasswd.html Create a file called .htpasswd: 
user1:nbGwQ3aJkq3qE (e.g. user1:encrypt password1)
KxS Password Encrypter: www.kxs.net/support/htaccess_pw.html Create a file .htaccess: 
AuthName "Restricted Area"
AuthType Basic
AuthUserFile /mysite/.htpasswd
AuthGroupFile /dev/null
require valid-user
Upload .htpasswd (best) to the root or a non publically accessible directory on your server. Upload .htaccess to the directory you wish to protect.

2.2 Password protected web - cms solution

Protected area for registered users dependent on a specific CMS.

2.3 Computers and Humans apart

Captcha: en.wikipedia.org/wiki/CAPTCHA reCaptcha: recaptcha.net Hidden tag: 15daysofjquery.com/safer-contact-forms-without-captchas/11/ Captcha alternatives: www.arraystudio.com/as-workshop/the-captcha-alternatives.html Sources: Detailed description of 6 methods to control what and how your content appears in search engines - 6 ways to stop Google and other search engines from indexing your site | Antezeta Web Marketing.

How To Optimize Your Web Site

How develop web page with best performance?
For web sites, speed may be feature #1. Users hate waiting, we get frustrated by buffering videos and pages that pop together as images slowly load. It’s a jarring (aka bad) user experience.
Time invested in site optimization is well worth it, so let’s dive in:

How to resize a VMware Linux virtual disk?

On your host

resize the virtual device’s virtual disk (example for create 10GB disk). 
command: vmware-vdiskmanager -x 10GB myvirtual.vmdk

On your virtual server

resize filesystem (example for default instalation of CentOS 5). Check filesystem data 
command: df -h
  1. Add a new partition 
    command: fdisk /dev/sda
    (p - print the partition table; n - add a new partition; t - change a partition's system id, e.g. 8e Linux LVM; w - write table to disk and exit)
  2. Reboot 
    command: reboot
  3. Create physical volume 
    command: pvcreate /dev/sda3
  4. Extend volume group 
    command: vgextend VolGroup00 /dev/sda3
  5. Extend logical volume 
    command: lvextend -l +100%free /dev/VolGroup00/LogVol00 /dev/sda3
  6. Resize filesystem 
    command: resize2fs /dev/VolGroup00/LogVol00
Check filesystem data 
command: df -h