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I've upgraded to 12.04 but is the same. Boot time is about 10 minutes. I'am newby

I've install bootchart, this is the image generated (link, new user are not allow to post Thx for help

bootchart log

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give us more information, what's your computer specs. –  Alen Oct 10 '12 at 20:22
Just a guess. One friend has buy external hard drive. When the drive is connected the computed boot for 4-5 minutes. Then we check the BIOS machine and it appears that the "SMART" check was checking the external drive too. Disable the check solve the issue - superuser.com/questions/478401/… –  gotqn Oct 10 '12 at 21:02
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1 Answer

The boot time can vary for various reasons. If you can please install bootchart package and reboot the system. This package will create a chart of your computer boot process each time you start the computer.

The charts are stored in /var/log/bootchart. After you reboot update your question with the generated chart (if you have more than one picture, post the most recent). This will provide a lot of information that can be used to identify the cause of the slow boot.

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