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I have burnt the iso image on a CD.I am able to boot from the CD.I tried to install Ubuntu 12.04 alongside windows.everything was working fine.resizing the partitions was done,installation showed various features ubuntu has then it started retrieving files.while retrieving suddenly screen went blank.i tried 2-3 times but the same thing is happening again and again.i spent my whole day but not getting the solution :(.somebody please help me...I also checked whether iso file is proper using shows same values on comparing hashes.please help....

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Please somebody help.....It's urgent!!can somebody guess what might be the problem?Everything is working fine and suddenly the system shuts down.Windows XP is working fine.since i did 2-3 times resizing the partitions was done many times.can this be a problem???I will be extremely thankful if someone can guide me installing through the CD.waiting eagerly for reply!!Thanks in advance – Nikki Jun 10 '12 at 14:41
up vote 0 down vote accepted

I would suggest:

  1. Try installing the system once again but don't select to download updates during installation. You can do that later too. If this does not help:
  2. As md5 hashes of iso are correct, I don't see anything else except burning the iso image again ( on another cd or pen drive, if you have one) and try installing then.

See if it helps.

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Thanks drake01 i'l try again but while installing it asks to unmount it ok if i unmount partitions again n again whenever i try to install? – Nikki Jun 10 '12 at 15:42
Yeah, mounting and unmounting the partitions are a normal practice in linux. Its just like letting linux select a drive. Like you'd have mounted a pen drive and unmounted (safely removed) it in other operating system windows/mac. – drake01 Jun 10 '12 at 15:51
should i use gparted to partition my windows first or is it ok if i dont do that coz i already have 20gb free space in my d drive – Nikki Jun 10 '12 at 16:15
Assuming that you have only one operating system i.e. windows and you want to install the ubuntu on a dedicated partition ( d drive in this case), It depends on your needs. After you have installed ubuntu, it takes around 4 GB of the hard disk space. You are then left with 14 GB for your personal use. If you are a casual user who'd anyways install a new linux distro in say 6 months or reinstall if need more space, 20 GBs should be good enough. You can keep the heavy multimedia files (movies), iso images to other partitions as you'd be able to access windows partition too from ubuntu. – drake01 Jun 10 '12 at 16:21
Also use gparted with care. If you try to contract windows partition with it, it may hurt it if not used carefully. You may try windows partition manager or some freeware for windows ( easeus partition manager) for windows. After you have decided which partition to be used for ubuntu installtion, boot the live cd/pendrive -> In the partition table select the partition that you want to have ubuntu upon -> format it ( be careful here, you'd lose precious data if you selected any other partition) Set it as / and decide the file journalling system (ext3/ext4). Allocate swap n follow instructions. – drake01 Jun 10 '12 at 16:25

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