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I want to install Ubuntu with window 7 as a dual boot PC. I am new to Ubuntu.

After Booting from pendrive when I choose "intall ubuntu on Hard disk" , then installation window comes, I choose "do not connect to wifi right now". Then choose "installation type alongside window 7". After clicking "continue" a black scrren comes for 2 seconds and then my pc again restart and window 7 starts every time. (after step 4 as mention on http://www.ubuntu.com/download/help/install-desktop-latest)

I am using my pen drive to boot (I made it Ubuntu bootable from http://www.pendrivelinux.com ) and i tried this installation using wifi connected and disconnected as well as.But i prefer to disconnected during installation.and these are not the actual problem.

(After booting from pen drive selecting after install ubuntu on Hard disk it goes to select language option and then prepare to install Ubuntu and after the step "install alongside window7" pc again boot to window 7 (That is the Problem).


But first and second time after boot instead of installation window it directs into a black screen command modes where lots of commands are shown and it shows write help command.Then i am unable to do anything and have to turn off my laptop with power key.)

The last two lines were...

Busybox V1.1.18.5 (Ubuntu 1:1.18.5- 1ubuntu4) built-in shell (ash)

Enter help for a list of built-in-commands

(initramfs) Unable to find a medium containing a live file system


I am using Ubuntu 12.04 desktop- i38.iso (735,358,976 bytes)

Md5sum is : d791352694374f1c478779f7f4447a3f

  • Laptop model: compaq presario cq62 -112tu

  • RAM: 2 GB

  • Intel i5 430 M processor

  • 290 GB HDD: C drive 29.2 GB free of 49 GB;

  • D drive 121 GB free of 120 GB and

  • E drive 21.3 GB free of 127 GB

  • and HDD is simple (not dynamic)

I want to install Ubuntu in D drive alongside Window 7. Is it okay or wrong and how to do this.

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