if you do, after the completing the test - it will eject the CD.

and how are you going to reinsert the CD to complete your install? you're remote remember ??

  • 1
    The BIOS should close the CdROM tray on start. But this is not the place to ask this question.
    – leppie
    Dec 6, 2010 at 10:36
  • How to do that, can you please help me out.
    – Octopus
    Dec 6, 2010 at 10:53
  • 1
    I guess the right place to ask would be: serverfault.com. Talking about the question, you should provide more details (which installation cd of which distro, how do you connect, etc.). If you need to close the cd tray from a Linux shell, the command is eject -t. But I suggest using md5sum to check the cd before attempting to use it, since the cd checking mechanism could be potentially broken too, faking the test results..
    – redShadow
    Dec 6, 2010 at 11:07
  • 2
    @leppie: Is there any guarantee that a reboot will actually make BIOS close the CD tray, or is it just a usual by-product of POST? Dec 6, 2010 at 12:00
  • @leppie What if the drive uses a slot, rather than a tray? Jan 23, 2014 at 15:00

2 Answers 2


As leppie says, a reboot should also fix this. Unless it's a laptop or slot style CD drive, it should be closed during POST.


redShadow's answer +1

eject -t to close the tray, but the md5sum is the better method. You can get the md5 key from the distro site.

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