Today I was trying to install Debian Jessie (8.6 20160917 15:03), using netinstall ISO, Live CD ISO (on usb device) and network boot install.

But every time, after create all partitions the installer ask for a cd rom on /media/cdrom and get stuck there.

Any hint on this problem? I don't know wath to do.


Using a live cd install, I follow this steps:

  • Click on Application Launcher
  • Execute "Install Debian Jessie"
  • Select a Language: English
  • Select your location: Other - South America - Chile
  • Configure Locales: United States - en_US.UTF-8
  • Configure the keymap: Latin America
  • Detect network hardware - Load firmware for Realtek device - No (I tried with the realtek firmware on an USB device but it not detect it)
  • Configure the network: eth0 (same result with wlan0)
  • Set the machine and domain name
  • Set root password
  • Set user and password
  • Configure the clock: Santiago
  • Partition Schema:
    • sda5 ext2 /boot
    • sda6 LVM
      • ext4 /home
      • ext4 swap
      • ext4 /

At this point I got this message:

/media/cdrom/: Please insert the disc labeled 'Debian GNU/Linux 8 Jessie - Official Snapshot amd64 LIVE/INSTALL Binary 20160917-15:03' in the drive '/media/cdrom' and press enter.

UPDATE I just skip the internet connection settings and install the defaults "CD-ROM" packages. Then update the sources.list file with some jessie repositories and did an update

sudo apt-get update sudo apt-get upgrade

  • The installation will ask you if you want to add any mirrors. Say no and it will continue only with the so called base system. Nov 11, 2016 at 19:18
  • Which did you use to install? The Netinstall ISO or the Live CD ISO? Or are you saying you tried three methods and got the same error? Nov 11, 2016 at 19:18
  • @roaima Yes, I tried three diferents methods and got the same error. I will edit including all steps using a LIVE CD Instalation (on a USB device) Nov 11, 2016 at 19:23
  • May be relevant to some people: unix.stackexchange.com/questions/170069/… - tl;dr, you can go to shell and mount the USB device partition again under /cdrom and it then finds it May 17, 2021 at 19:42

3 Answers 3


I'm going to assume it is asking for a different CD/DVD to the single one you've got for the installation.

This is because it cannot find the packages you've requested on the CD/DVD and it needs to get them online. But presumably you haven't provided a mirror either so it's got no recourse except to assume it's an offline installation and you have a collection of CDs/DVDs ready to feed it.

Solution: either provide a mirror or don't ask for packages that aren't on the single installation disk.

If you're running from the NetInstall ISO, then there's only enough for a minimal system on the image. Everything else has to come from the network (hence the name).

  • I did a mirror selection. This is no the first time that I install debian, but today I downloaded the latest Debian Image. So, on netinstall Debian will download everything from internet (I assume) Nov 11, 2016 at 19:30

You can mount your removable media manually as describe here:

D.3.4.2. Mount Partitions

Current Debian systems have mountpoints for removable media under /media, but keep compatibility symlinks in /. Create these as as needed, for example:

Press Alt + F2 then type:

 cd /media
 mkdir cdrom0
 ln -s cdrom0 cdrom
 cd /
ln -s media/cdrom

Then press Alt + F1


Just unplug your usb, wait a few moments, plug it back into the same port and the install should continue after pressing 'next'.

  • Wow, this actually worked for me 5 years later. Trying to install the latest Debian that I burned to a flash drive via BalenaEtcher and the installer couldn't locate all the drivers and asked for CD-ROM. After reading your answer I unplugged the flash drive, waited a few seconds, plugged it back in, then selected "YES" to locate the drivers on CD-ROM (again) and it found them. May 28, 2021 at 8:17

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