[Bug 2035034] Re: Installer fails to recognize correct partition sizes, likely sector size confusion

[Olivier Gayot]

** Changed in: subiquity
       Status: Fix Committed => Fix Released

** Changed in: curtin
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/2035034

Title:
  Installer fails to recognize correct partition sizes, likely sector
  size confusion

Status in curtin:
  Fix Released
Status in subiquity:
  Fix Released
Status in ubuntu-desktop-installer:
  New

Bug description:
  I am trying to install Ubuntu 23.04 on a Macbook Pro 2017 (dual
  booting with MacOS). For that purpose, I created two partitions called
  UBUNTU and SWAP.

  GParted is showing them with correct sizes. See screenshot here:
  https://imgur.com/a/jmYCpNr

  But for some reason the installer gets their sizes completely wrong
  (and wrongly shows much of the disk as unallocated to any partition).
  See screenshot here: https://imgur.com/a/EYuEGse

  Note that this is the Desktop install
  (https://ubuntu.com/download/desktop). The legacy installer recognizes
  the sizes of the partitions correctly. This is an issue with the new
  installer.

  A thought - based on the ~8x discrepancy in the values, it looks like
  GParted knows the partition table uses 4096 byte blocks but the new
  Ubuntu installer thinks it uses 512 byte blocks for some reason.

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