Page 1 of 2 12 LastLast
Results 1 to 10 of 15

Thread: Can Ubuntu boot from CD and copy itself to memory.

  1. #1
    Join Date
    Apr 2009
    Beans
    16

    Can Ubuntu boot from CD and copy itself to memory.

    Hello, this is my first post, I have search the forums but there doesn't seem to be a relevant post, so...

    To save reading below the question is can Ubuntu boot from CD and copy itself to memory.

    I aquired a Ubuntu CD some while ago. I have not used it much but it seemed to work OK.
    I assume it boots from CD and runs off CD, as the CD seem to be accessed most of the time.

    Recently I saw a Slax CD that had an option to boot from CD and copy to memory. Unfortunatly it didn't like My Dell/Intel video card and X would not start up, Ubuntu seems OK.

    However given I have 4G memory the copy and run in memory option seemed to offer many advantages.
    1) Does not affect my Vista ( am I allow to use that word ? ) install which took an amazing amount of time to get working ( well nearly working ).
    2) Possible speed gains.
    3) As it runs clean every time it has minimal chance of being affected by viruses.

    Thanks
    Jim

  2. #2
    Join Date
    Mar 2009
    Location
    Australia
    Beans
    9
    Distro
    Ubuntu Jaunty Jackalope (testing)

    Re: Can Ubuntu boot from CD and copy itself to memory.

    I don't really understand your question. If you do start ubuntu (or any other liveCD for that matter) from CD, it does run from your CD and yes, it uses your computer memory to run. But the moment you shut down your computer, your memory is lost - and therefore your ubuntu. There is no way to "install" any form of software into your RAM.

    If, on the other hand, you mean whether it's possible to install ubuntu on to some form of memory (USB) stick, flash, or external hard drive and then boot it from there then yes, it is possible.

    Check out:
    http://www.pendrivelinux.com/ubuntu-...usb-installer/
    or
    http://www.pendrivelinux.com/ubuntu-...-from-live-cd/

    Hope that helps

  3. #3
    Join Date
    Apr 2009
    Beans
    16

    Re: Can Ubuntu boot from CD and copy itself to memory.

    No the SLAX option copys the CD rom contents to RAM and runs from there. It doesn't run from CD.

    With the the Ubuntu CD when you click an application to run the CD winds up and the application is run from CD.

    But with the totally in memory option you can remove the CD once the image is copied into memory. The system runs totally in memory.

    If needed you can still mount USB and Hard drivers.

    Thanks
    Jim

  4. #4
    Join Date
    Mar 2009
    Location
    Australia
    Beans
    9
    Distro
    Ubuntu Jaunty Jackalope (testing)

    Re: Can Ubuntu boot from CD and copy itself to memory.

    Okay, sorry, got it now. Never heard of such an option for ubuntu. But that's probably due to its rather large size compared to slax. But the problem of losing everything once you switch off your computer remains (i.e. you'll lose all settings and changes you may have made).
    If I were you and you don't want to fiddle around with your Vista, I'd install ubuntu on an external drive and run it from there. Thus you'll have at least the possibility to run your OS to your specifications. But that's just me

  5. #5
    Join Date
    Apr 2007
    Beans
    547

    Re: Can Ubuntu boot from CD and copy itself to memory.

    Yes the ubuntu cd/dvd is called a live cd, meaning it sets itself up in ram, and gets data from the cd when it needs to, it does not install to or affect the existing hard drive of the pc unless you actually select install to hard drive when booting the cd.

    you have the option to keep your windows and be able to run ubuntu too.

    im pretty sure hes wanting a dual boot setup where windows is still there and not disturbed, with the choice of either booting into ubuntu or windows.

    with this in mind, some dual boot setups seem to fail where neither os will boot, or one or the other will boot.

    The seemed failure is not a failure at all. the bootloader just needs some missing information to be able to boot either os. this is easily fixed.

    in this situation, all the windows stuff is still there, as well as the new ubuntu os.

    in other scenarios the ubuntu install can not figure out how to set up the video to provide a graphical display, this is not a ubuntu problem, but a problem of the vid card manufacturer still brainwashed by the Microsoft way of doing things thus they have not written complete support for Linux yet.

    if the Live ubuntu cd does boot up when booted from the cd-rom, and you get a graphical display, then it will also work when actually installed onto the hard drive. with that said, sometimes all that is needed is a file edit to get the display working.

    I hope this answers your questions, and kinda prepares you ahead of time of what you may or may not run into.

    welcome to the open world.

  6. #6
    Join Date
    Mar 2009
    Location
    Australia
    Beans
    9
    Distro
    Ubuntu Jaunty Jackalope (testing)

    Re: Can Ubuntu boot from CD and copy itself to memory.

    Very true. I would go with a dual boot (worked a breeze on my (vista + ubuntu 8.10)) but he can still put it on an external drive if he doesn't want to, or feels uncomfortable, messing around with his partitions.
    I think that was the initial worry.

  7. #7
    Join Date
    Apr 2009
    Beans
    16

    Re: Can Ubuntu boot from CD and copy itself to memory.

    Well one of my requirements is for a secure mechanism for performing financial transactions.

    I worry greatly about if my Vista system is secure, even with my Virus scanners etc.

    Now I am not a security expert, but...
    If the system boots from CD and runs in memory and has no USB or harddrive and does not allow remote logins, then the possibility for viruses is drastically reduced.

    If then you don't surf the net but go directly to your financial site security must be maximised.

    I guess the Ubuntu CD fits the above, but is a bit slow runnig from CD.

    Thanks
    Jim

  8. #8
    Join Date
    Apr 2007
    Beans
    547

    Re: Can Ubuntu boot from CD and copy itself to memory.

    After seeing your replies to those that responded, yes ubuntu can work from ram completely, it involves configuration changes so it know where to load and save files to.

    to have such a setup is risky tho, the slightest power glitch renders ram scramble. as Linux places markers for the processor to come back to while it is busy doing something, if that something is a kernel write, down it goes. if that something is a pet project that was just was loaded into ram, goodbye. any inopportune event can crash and permanently damage the os and or files.

  9. #9
    Join Date
    Apr 2009
    Beans
    16

    Re: Can Ubuntu boot from CD and copy itself to memory.

    Not really bothered if the system gets trashed.

    And I would have thought that most power glitches that corrupt system ram run the risk of trashing the system regardless.

    Anyway I think just running from CD will fit my bill.

    Must be better than trusting my Vista system with all it's potential viruses and key loggers.

    Thanks
    Jim

  10. #10
    Join Date
    Apr 2007
    Beans
    547

    Re: Can Ubuntu boot from CD and copy itself to memory.

    Microsoft just announced that Vista users will have a free upgrade to Windows 7, and Windows 7 will be downgradeable to Xp
    XP users will have to pay to upgrade to Vista then get the free upgrade to Windows 7.

    When I read this and was done shaking my head, I immediately thought of a reason that Windows 7 would be made downgradable to XP,
    Windows 7 fully patched was brought down in the hacker challenge within 20 minutes last month. A fully patched Mac pro was hacked in ten seconds at the same event. I have to admit though the Mac was hacked while it was running software that was designed to run in windows.

    Last year Vista fell after a day, and Mac fell after 2 days.

    I suspect that a Linux box was not invited to the challenge this year, because last year the Linux box was the only system left standing after the dust cleared.

Page 1 of 2 12 LastLast

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •