Public bug reported:
Description of problem:
When creating GPT partitions for Linux filesystems, libparted uses the
Microsoft Basic Data partition type code GUID
(EBD0A0A2-B9E5-4433-87C0-68B6B72699C7). This is fine as far as Linux is
concerned, since Linux ignores partition type codes for the most part;
but the result is that the Windows file manager shows Linux filesystem
partitions as being unformatted but accessible disks. Attempting to
access such partitions results in a prompt to format them. (See attached
screen shot.) This behavior is potentially dangerous; a simple user
error can easily result in trashing the Linux installation.
Note that libparted creates partitions with appropriate Linux-specific
type codes when creating swap, LVM, or Linux RAID partitions. It also
creates Linux-specific type codes on MBR ("msdos") disks; it's ONLY
Linux filesystems on GPT disks that are affected.
I created a patch for this problem almost eight months (see below), but
the libparted developers have been slow to add it to libparted. I
recommend it be added as a bug fix in Ubuntu.
This problem is likely to become increasingly important as UEFI-based
systems become more common, since UEFI installations of Windows
necessarily use GPT rather than MBR, which is more common on BIOS-based
computers.
Version-Release number of selected component (if applicable):
3.0 and earlier.
How reproducible:
Always
Steps to Reproduce:
1. Launch parted (or any other libparted-using tool, including the Ubuntu
installer) on a GPT disk.
2. Create a new partition with a Linux filesystem (ext#fs, ReiserFS, XFS, JFS,
etc.).
Actual results:
The partition uses the Microsoft Basic Data type code.
Expected results:
The partition should use the Linux Filesystem Data type code
(EBD0A0A2-B9E5-4433-87C0-68B6B72699C7)
Additional info:
I submitted a patch for this problem to the libparted developers in June
of 2011, and they agreed to incorporate it into the mainstream
libparted, but have yet to do so. The patch is available on the bug-
parted mailing list or at http://www.rodsbooks.com/linux-fs-
code/index.html.
ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: parted 2.3-6ubuntu3
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic x86_64
ApportVersion: 1.23-0ubuntu4
Architecture: amd64
Date: Sun Feb 19 20:37:23 2012
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
ProcEnviron:
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: parted
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: parted (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug oneiric running-unity
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https://bugs.launchpad.net/bugs/936661
Title:
parted should create Linux filesystem partitions with Linux-specific
type code
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