Bug 373355

Summary: Damaged partition table - file system type reported as empty
Product: [Applications] partitionmanager Reporter: dreyerbernd
Component: generalAssignee: Andrius Štikonas <andrius>
Status: RESOLVED FIXED    
Severity: normal    
Priority: NOR    
Version First Reported In: 1.2.1   
Target Milestone: ---   
Platform: Other   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description dreyerbernd 2016-12-06 14:41:45 UTC
A damaged  partition table with file system type empty is reported. In other aspects, the remainder of the data seems to be good. Trying to apply the original file system type results in a warning to loose all data. Is this true in this particular case?
The change of the partition table was possibly a result of the application of the partition manger Mini Tool 9.1 in Windows XP.
With Mini Tool 9.1, it was impossible to close a gap of 8 MB between a logical ext 4  partition and a logical NTFS partition, neither with resize nor with extend.
Partition was earlier also changed with GParted.
Could this be a compatibility issue pertaining the alignment incompatibilities with Windows XP (see check box in settings of Partitionmanager)?
Comment 1 Andrius Štikonas 2016-12-06 15:22:23 UTC
8 MB gaps might be cause by partition alignment but it's nothing too serious. In the worse case you just loose a tiny amount of space an slight reduction in performance.

Please be careful before proceeding, I'm not sure what Mini Tool has broken. Make sure you have backup of all your data.

Changing fs in partition properties dialog would format that partition from scratch, this is not what you want, don't do it.

But I would need more information to be able to help... E.g. what kind of partition table you have, maybe some screenshots what partition manager shows etc... Also if you have not enabled log output in kde partition manager (in view menu) then enable it, it can show useful errors.

You can try to inspect what is your state of partition table with some tools, e.g. fdisk. If your hard drive is at /dev/sda, then run sudo fdisk /dev/sda and press p to show state of the hard drive.
Comment 2 dreyerbernd 2016-12-06 18:19:52 UTC
Good afternoon,

great thanks Andrius. After I have modified a partition with Gparted, it took a bit longer, before, after recognition of the USB-drive,  the volumes of the disk in question disappeared again in the Windows Explorer. So, I could start Testdisk and select the questionable disk in the USB-drive. After scanning, Testdisk found the boot sector of the fist partition being longer than expected. After that, I have written a new boot sector using the Testdisk tools and as a result all disk partitions are fully accessible now.

Kindest regards

Bernd Dreyer 

-----Ursprüngliche Nachricht-----
Von: Andrius Štikonas [mailto:bugzilla_noreply@kde.org] 
Gesendet: Dienstag, 6. Dezember 2016 16:22
An: dreyerbernd@hotmail.de
Betreff: [partitionmanager] [Bug 373355] Damaged partition table - file system type reported as empty

https://bugs.kde.org/show_bug.cgi?id=373355

Andrius Štikonas <andrius@stikonas.eu> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEEDSINFO
         Resolution|---                         |WAITINGFORINFO

--- Comment #1 from Andrius Štikonas <andrius@stikonas.eu> ---
8 MB gaps might be cause by partition alignment but it's nothing too serious.
In the worse case you just loose a tiny amount of space an slight reduction in performance.

Please be careful before proceeding, I'm not sure what Mini Tool has broken.
Make sure you have backup of all your data.

Changing fs in partition properties dialog would format that partition from scratch, this is not what you want, don't do it.

But I would need more information to be able to help... E.g. what kind of partition table you have, maybe some screenshots what partition manager shows etc... Also if you have not enabled log output in kde partition manager (in view menu) then enable it, it can show useful errors.

You can try to inspect what is your state of partition table with some tools, e.g. fdisk. If your hard drive is at /dev/sda, then run sudo fdisk /dev/sda and press p to show state of the hard drive.

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Comment 3 Andrius Štikonas 2016-12-06 18:25:28 UTC
Ok, glad to hear that you fixed it.

I'll close this bug then.