Phillip, the Atari Partition Table spec is located here:
http://drac030.krap.pl/APT_spec.pdf
You will notice that the header entry (bottom of p.2 to top of p.3) has
a signature at offset 1 ("APT"). It also has a sanity check at offset
5. In addition, each partition entry points to both the previous and
next entry. There are clearly sufficient tests here to see if there is
really an Atari Partition Table present or not.
I have filled six 2T disks, each with different random data, and I'm
always getting the same result. There is no way this is happening
randomly.
--
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to util-linux in Ubuntu.
https://bugs.launchpad.net/bugs/1531404
Title:
nonexistent partition in /dev, & lsblk/disk util misbehaving with
randomized disks
Status in util-linux package in Ubuntu:
New
Bug description:
I have two 2T disks with no partition table and which have been filled
with random data. GNU parted shows nothing on this disk:
GNU Parted 3.2
Using /dev/sda
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) print
Error: /dev/sda: unrecognised disk label
Model: ATA WDC WD2002FAEX-0 (scsi)
Disk /dev/sda: 2000GB
Sector size (logical/physical): 512B/512B
Partition Table: unknown
Disk Flags:
but when I check with `lsblk`, I see one disk with partitions and the
other without:
Code:
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 1.8T 0 disk
└─sda2 8:2 0 1.6T 0 part
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sdb 8:16 0 1.8T 0 disk
and the Disks utility agrees (see: http://ibin.co/2SQv4KbH06Mz).
Also, /dev/disk/by-id contains an entry pointing to sda and one
pointing to sda2. So it really does think there's a second partition
there.
Thinking there was something wrong, I re-filled the disks with random
data. Now sda is properly (in the Disks utility as just an "unknown
disk"), but sdb shows a second partition, and identically to how sda
was showing it before (ie the Disks utility output is the same with
181GB at the beginning and 128GB at the end).
I am running all this from the Ubuntu Gnome 15.10 installer disk.
---
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
CurrentDesktop: GNOME
DistroRelease: Ubuntu 15.10
InstallationDate: Installed on 2015-08-31 (130 days ago)
InstallationMedia: Ubuntu-GNOME 15.10 "Wily Werewolf" - Release amd64
(20151021)
Package: util-linux 2.26.2-6ubuntu3
PackageArchitecture: amd64
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcVersionSignature: Ubuntu 4.2.0-23.28-generic 4.2.6
Tags: wily
Uname: Linux 4.2.0-23-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/util-linux/+bug/1531404/+subscriptions
--
Mailing list: https://launchpad.net/~touch-packages
Post to : touch-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~touch-packages
More help : https://help.launchpad.net/ListHelp
