Ubuntu minimal install takes longer than normal install when installing from official ISO

[Tony Thuitai]

Expected installation: Minimal installation should not take longer than normal installation.

Performed a test of Ubuntu 19.10 installation with Erase Disk option on both a 5400rpm hard disk and a SATA 3 SSD when they are connected directly to a SATA 3 interface and internet speed and mirrors are fast. When installing on a 5400rpm hard disk, minimal installation takes almost an hour but normal installation takes about 30 minutes. When installing on a SATA 3 SSD, minimal installation takes about 10 minutes while the normal installation takes about 5 minutes.

Why the opposite of the expected installation occurs is because the Minimal installation mode seems to 'debloat' the normal installation by removing packages that are not required which include games, media players and other applications, locales and many of them are not of the selected language and installer related packages.

I request a fix to the ubiquity installer such that only the required packages are installed based on language and other options especially whether Minimal or Normal set before the start of installation on hardware. This will save a lot of time, especially on mechanical hard drives.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: ubiquity (not installed)
ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30
Uname: Linux 5.4.0-26-generic x86_64
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Mon Apr 27 10:14:37 2020
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed maybe-ubiquity quiet splash ---
InstallationDate: Installed on 2020-04-27 (0 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
SourcePackage: ubiquity
Symptom: installer
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Pablo Carballo (pmcarballo)]

Fresh installation in a Virtualbox VM, I wanted to save time, then I selected "Minimal Install". This is totally unexpected, and makes no sense at all.