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Old 03-30-2007, 11:15 AM   #1
gregorian
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Why does my Ubuntu boot so quickly when I...


...press Ctrl + Alt + F1 at the beginning of the boot process?

I see:

Starting up....


Then I see a few lines of text, and after 5 seconds my GUI loads. If I let it boot the normal way, it takes more than 2 minutes. Is there something wrong with this way of booting? I haven't experienced any problems I know of yet.
 
Old 03-31-2007, 05:01 AM   #2
Hendronicus
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This is only a guess but I would say that ctl-alt-F1 probably turns off some auto-detection routines that you apparently don't need anymore. Lucky you...
 
Old 03-31-2007, 11:11 AM   #3
gregorian
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Seriously, my Ubuntu boots faster than my Windows now! I just want to know if they're any drawbacks to this method.
 
Old 03-31-2007, 03:13 PM   #4
mcmillan
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It shouldn't make any difference, ctl-f1 should just be showing messages that come up during the boot process. I'm not sure why it would be faster, but if it is going so much faster it shouldn't hurt anything.
 
Old 03-31-2007, 04:14 PM   #5
Hendronicus
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The only drawback that comes to mind is if you add new hardware to the machine or if you add software that needs to auto-configure at boot. I'm going to try this trick sometime, myself.
 
Old 04-04-2007, 09:10 PM   #6
gregorian
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I got an extra message today: /dev/hdb1 has been mounted 30 times without checking root file system. Checking forced.

It then took the usual time it takes to boot up.

So Ctrl Alt F1 bypasses the root file system checkup, and hence speeds up your computer.Is there any problem with this?
 
Old 04-05-2007, 01:47 AM   #7
Hendronicus
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Are you using the ext2 filesystem? If you are you should let it check it every once in a while. If you're using reiserfs or ext3 it shouldn't need to be checked unless the computer lost power for some reason. Also, ext2 is usually set set to check itself every 30 mounts or so, that may be why you saw that message.
 
Old 04-05-2007, 06:04 AM   #8
gregorian
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I don't know which file system I'm using. How do I find out? I just went with the default Ubuntu installation.
 
Old 04-05-2007, 07:07 AM   #9
brianL
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It will be ext3.
 
Old 04-05-2007, 07:16 AM   #10
52cent
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Quote:
Originally Posted by gregorian
I don't know which file system I'm using. How do I find out? I just went with the default Ubuntu installation.
type 'mount' on the terminal and look in the first output line next to to the word 'type'.
 
Old 04-05-2007, 08:40 AM   #11
gregorian
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Quote:
Originally Posted by brianL
It will be ext3.
You are correct. Does this mean I will be having no problem if I bypass the file system check?
 
Old 04-05-2007, 07:24 PM   #12
Dragineez
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What Do You Want For Nothing

Quote:
Originally Posted by gregorian
You are correct. Does this mean I will be having no problem if I bypass the file system check?
Sure. I don't think it's bypassing the file system check that is speeding it up. The check is run every 30th time you boot, not every time. So it wasn't running anyway.

Ctrl-Alt-F1 isn't really bypassing anything. It is dutifully launching a new virtual terminal, complete with X, just like you asked it to. The boot process is probably still going on in the background.

Last edited by Dragineez; 04-05-2007 at 07:31 PM.
 
Old 04-05-2007, 09:45 PM   #13
gregorian
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That's what I thought, but it doesn't explain why my boot up speed increased tremendously.
 
  


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