Public bug reported:

Currently the guided methods of the Ubuntu installer only address single
disk setup. When a user have several disks on his machine he has to use
the manual partitioning which is prone to failure for inexperienced
users.

It would be useful to understand how many disks are installed on a
system and their size to determine how update the installer to best suit
users' needs.

This information is available from /sys/block/<device>/size . The
information is in blocks. The block size is available from
/sys/block/<device>/queue/{logical|physical}_block_size

For example on my system

$ cat /sys/block/sda/{size,queue/*_block_size}
125045424
512
512

ProblemType: Bug
DistroRelease: Ubuntu 18.10
Package: ubuntu-report 1.2.0
ProcVersionSignature: Ubuntu 4.15.0-23.25-generic 4.15.18
Uname: Linux 4.15.0-23-generic x86_64
ApportVersion: 2.20.10-0ubuntu7
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Mon Jul 30 14:42:25 2018
Dependencies:
 gcc-8-base 8.2.0-1ubuntu2
 libc6 2.27-3ubuntu1
 libgcc1 1:8.2.0-1ubuntu2
InstallationDate: Installed on 2014-07-15 (1476 days ago)
InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Alpha amd64 (20140520)
SourcePackage: ubuntu-report
UpgradeStatus: Upgraded to cosmic on 2018-03-24 (127 days ago)

** Affects: ubuntu-report (Ubuntu)
     Importance: Undecided
     Assignee: Didier Roche (didrocks)
         Status: Triaged


** Tags: amd64 apport-bug cosmic

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https://bugs.launchpad.net/bugs/1784383

Title:
  Collect number of disks and disk size

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