[Bug 1855130] [NEW] idea: fast install with dd

[Корбанов Динар]

Public bug reported:

as i see, ubuntu live cd system is almost same as the installed system.
some differences are: other user name; other locale; gparted is not
installed; bunch of some restricted software like mp3 is selected to
install or not; gui language is selected; separate mount points and file
systems for directories can be used upon installation. i usually use
just one "/" partition and one swap and ext4 filesystem... as i know
every package is copied, uncompressed and configured separately during
installation. as i know, copying a partition (a whole file system) with
dd is several times faster than copying data file by file, because disk
head has not to move much. so, maybe you could just copy the whole file
system of the running live cd, and then do some changes like renaming
user, changing password, removing or installing mp3 etc, installing
translation packages. i have now understood, that live cd filesystem is
squashfs, it is different from ext4. but, i will report this "bug"
anyway. maybe on the fly conversion from squashfs to ext4 is possible,
or modify squashfs and get ext4 inside of squashfs. as i know,
difference of ext4 file system depending on partition size is quite
small, and file system can be growed quite fastly.

** Affects: ubiquity (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1855130

Title:
  idea: fast install with dd

Status in ubiquity package in Ubuntu:
  New

Bug description:
  as i see, ubuntu live cd system is almost same as the installed
  system. some differences are: other user name; other locale; gparted
  is not installed; bunch of some restricted software like mp3 is
  selected to install or not; gui language is selected; separate mount
  points and file systems for directories can be used upon installation.
  i usually use just one "/" partition and one swap and ext4
  filesystem... as i know every package is copied, uncompressed and
  configured separately during installation. as i know, copying a
  partition (a whole file system) with dd is several times faster than
  copying data file by file, because disk head has not to move much. so,
  maybe you could just copy the whole file system of the running live
  cd, and then do some changes like renaming user, changing password,
  removing or installing mp3 etc, installing translation packages. i
  have now understood, that live cd filesystem is squashfs, it is
  different from ext4. but, i will report this "bug" anyway. maybe on
  the fly conversion from squashfs to ext4 is possible, or modify
  squashfs and get ext4 inside of squashfs. as i know, difference of
  ext4 file system depending on partition size is quite small, and file
  system can be growed quite fastly.

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