Installing Debian “Lenny” on Ubuntu Mobile Operating System

If equipment in your ubuntu mobile operating system requires loading a firmware with the equipment driver, you can use one of the tarballs of the common firmware packages. Instructions on using tarballs and loading a firmware during installation can be found in the installation guide (see documentation below).


  • To download complete CD and DVD images, the use of BitTorrent or jigdo is recommended.
  • For the less common architectures, only a limited number of images from CD and DVD sets are available as ISO or BitTorrent files. Complete games are available only via jigdo.
  • Multiarch CD images support the i386/amd64/powerpc and alpha/hppa/ia64 architectures respectively ; the installation is similar to the mono architecture installation from a network installation CD image.
  • The MULTIARCH DVD image supports i386/amd64 architectures ; the installation is similar to the mono architecture installation from a full CD image. The DVD also contains the sources of the packages.
  • For installation images, verification files (SHA256SUMS, SHA512SUMS and others) are available in the same folder as the images.


Here is a list of known problems in the installer provided with Debian GNU / Linux 5.0.10. If you have experienced a problem installing Debian and do not see listed here, please send us an installation report (in English) describing the problem or check the wiki for other known problems.

Errata for release 5.0

Automatic RAID disk Assembly in backup mode can corrupt data

The rescue mode must be used with great caution when software RAID was used on the system to be rescued. The backup mode scripts automatically assemble the disks. This can lead to data corruption in the presence of invalid or obsolete superblocks RAID.

Altered display of messages in the installation in dzongkha language

When the password chosen for root and its confirmation do not match, the display of the following screens is truncated during the installation in Dzongkha language (altered display of fonts in italics).

Possible modification of disk devices during reboot

On systems with multiple disk controllers when restarting the system, the program running the device in user memory (“udev”) can assign a different device node than the one used during installation due to a change in the order of driver loading.
This can lead to system startup failure. In most cases, this can be corrected by changing the bootloader configuration and /etc/fstab, possibly using the rescue mode of the installer.
Please note, however, that this problem may occur in subsequent starts.

Problems with restarting after installing from a USB key

The above problem can also occur when installing from a USB stick. Leaving the USB stick in place temporarily will allow you to start the installed system and the proper configuration of the boot loader. See # 506263 for more information and workarounds.

Malfunctioning routers can cause network problems

If you experience network problems during installation, this may be due to a router somewhere between your machine and the Debian mirror that does not properly support the dynamic window. Please see #401435 and this kerneltrap article for more information.
You can bypass this problem by disabling TCP window sizing. Enter the following command in a shell :
echo 0 > /proc/sys/net/ipv4/tcp_window_scaling
Once the system is installed, you should probably not completely disable the sizing of the TCP window. The following commands set read and write intervals that should work with virtually all routers :
echo 4096 65536 65536 >/proc/sys/net/ipv4/tcp_rmem
echo 4096 65536 65536 >/proc/sys/net/ipv4/tcp_wmem

Not functional for installing Squeeze or Sid

Following changes to the passwd package in testing and unstable, creating a user account will fail. Please refer to bug #529475 for details.

i386: several problems

  • The port i386 has some known problems in this version :
    Due to the increase in the size of the Linux kernel, we cannot provide installation images to install from floppy disks ;
  • We received at least one bug report regarding a hard shutdown of the installer at the network hardware detection stage on some Dell Inspiron laptops. See bug #509238 for details. A workaround seems to boot the installer with the parameter vga = 771.

PowerPC: various problems

  • The PowerPC port has several problems in this version :
    installation from floppy on OldWorld PowerMac is broken because no device node is created for the swim3 module and as miboot is not included ;
  • the snd-powermac module is no longer loaded by default because it blocks some systems ; you will need to add it manually in /etc / modules.

s390 : unsupported features

support for the DASD DIAG discipline is not currently available ;
support for LCS network interfaces is no longer available.

You can download the file directly on this link:


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