Weird Netinstall Issue

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The other day I burnt a copy of a CentOS 6.4 64 bit netinstall disc, verified the disc which passed & about a third of the way through the install it informed me that there was no CD in the drive & refused to carry on.

So I burnt another & the same thing happened. So using the same disk burner & the same batch of disks, I burnt a copy of a Debian 7.1
netinstall & it installed perfectly.

Any thoughts gladly welcome (the CentOS disc was downloaded from the CentOS repos).



9 thoughts on - Weird Netinstall Issue

  • Phil Dobbin wrote:

    Dust is the one thought that comes to mind. Try either blowing air into devices or getting some kind of cd/dvd device cleaner.


  • I’d say you should probably do an MD5 sum of the CentOS netinstall iso you downloaded and make sure it matches the entry in the .md5sum file that should be in the same directory where you got the iso — assuming that ‘verified the disc’ means only that the burner software verified the iso image matches the disc.

  • No, I checked the MD5 sum as always on both discs & verified it at the beginning of the install.

    Most odd, Debian server worked perfectly…



  • hello phil,

    1st, i would not consider a net install unless i was protected by going thru a good firewall server.

    ‘cyoa’. too many ‘crazies’ out there.

    as for ‘no CD in drive’, possible reason is something is being picked off cd and drive is slow waking up and install is not allowing enough time.

    best bet all around, pull a dvd install iso, burn and make install, then run update.


  • a DHCP/PXE server isnt going to reply to internet queries, and your TFTP
    server should be restricted to local addresses only, this pretty much secures a netinstall. the rest? I use a http server with a copy of the OS mirror, who cares if the internet can see it?

    indeed, the ‘minimal’ install ISO is hardly any bigger than the netinstall ISO, and is less hassle… after doing the minimal install, you can `yum groupinstall` anything else you need. The only time I use netinstall is when I’m doing a full jumpstart/kickstart style install via PXE.

  • hello john,

    thanks for your reply to my post.

    5 things that i am aware of;

    1 – DHCP – aware of, know a little about.

    2 – PXE – aware of, know a little about.

    3 – netinstall – aware of, never used, never read about.

    4 – loving linux from day 1 with slackware and stack of disk.

    5 – retired – no longer need to worry about 1, 2, 3, as i now install
    only my own and friends personal systems and glad of it. ((GBWG))

    this past weekend, i pulled CentOS so i can get out from under what i am currently using.

    ran a default install, which has been a pita to set up because default is gnome, which i do not really care for.

    from all that i have had to go thru trying to get kde going, it looks like i will try again to see if CentOS will install kde instead of gnome.

    if not, i hope you and some of the other more serious posters on this list can/will pull me thru.

    thanks again.


  • # yum -y groupinstall “KDE Desktop”

    should be all it takes to install KDE on an existing install. I don’t run CentOS desktops so I don’t know offhand how you select what desktop to default to, but I thought you could choose it from the login screen.

  • ah so. thank you very much.

    i knew there was something i was forgetting. i just was not thinking of what it was.

    thanks to chemotherapy last year, my ‘chemo brain’ has almost totally removed my ‘near photographic memory’ i used to enjoy.

    this is true. i did such first time i installed CentOS and it stayed with out having to continually select.

    after banging my head against several problems with 32 bit, i thought it would be easier to run a fresh install with 64 bit, which brought along more problems and head banging.

    this next fresh install, i intend to select what is installed instead of going with default because default installs a bunch of packages that i have little to no use for.

    should make a much smaller “/media/sdb3” where i have CentOS installed and i can increase “/dev/home”.

    ]$ dfs
    /dev/sda1 67649680 64356780 3292900 96% /media/AE90166090162F79
    /dev/sda2 10490444 6731328 3759116 65% /media/HP_RECOVERY
    /dev/sdb1 11783136 80164 11702972 1% /media/10BDD0693BFCE1E5
    /dev/sdb3 10317860 4026592 5767148 42% /media/sdb3
    /dev/sdb5 21931908 12603040 8214708 61% /home
    /dev/sdb6 30975612 6717240 23943700 22% /

    fyi, “dfs”
    ]$ cat ../scripts/dfs
    #### fn= dfs .2008.1223.2341
    ## use= show disk usage in dev order
    df -B 1024|grep /dev/sd|sort

    btw, i have ‘raveled’ this thread more than i care to. and i have a few questions to ask before i make fresh install of CentOS.

    also, i need to ‘pull the plugs’ and get some rest before the rooster crows.

    will post a new “Subject:” later on in the dawn.

    thanks again.

  • Thanks, John.

    I’ve always used the netinstall but I’ll give minimal a try.

    Thanks to everybody for their valuable input.