Invalid Partition Table

Asked by MIK

Hi,
One of my customer downloaded Ubuntu 12.04 and installed on the system, every time system starts -- Gets the Error "Invalid Partition Table" when Pressed Enter on the keyboard -- system continues to boot and works fine -- Functionality wise no issues -- only at the boot Gets the Error
- Need help on the problem to get rid of this error and how differently he installed the OS. he has the same issue on TWO system
- System is with AHCI Chipset contoller and No H/W RAID is configured -- customer configured Software RAID within the OS During the installation of the Ubuntu and this is NOT Dual Boot system.

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actionparsnip
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actionparsnip (andrew-woodhead666) said :
#1

What is the output of:

sudo frisk -l; lsb_release -a; uname -a

Thanks

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actionparsnip (andrew-woodhead666) said :
#2

Sorry, change frisk to fdisk. Stupid autocorrect

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MIK (m-i-k) said :
#3

Hi Andrew

Sorry .. I have no Knowledge of Ubuntu Commands -- need to get info from the customer -- However -- could you please help on Possible reason to have this Error -- Is this is something related how the installation being done ?

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actionparsnip (andrew-woodhead666) said :
#4

We need the output of the command so we can see the partition layout. The error doesn't give enough detail for us to make suggestions.

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Manfred Hampl (m-hampl) said :
#5

1. The output of the commands given above should provide some basic information that is required for providing help.
Please open a terminal window on the customer machine (e.g. by simultaneously pressing ctrl-alt-t) and issue these commands, then use the terminal window's menu entries "edit - select all" and "edit - copy" to copy all output and paste it into this question document that we can see it.

2. Reinstalling the grub boot record helps to correct some cases with error messages at early stages of booting. To give the correct command we need the output of the commands given. (The required command might be "sudo grub-install /dev/sda", but to confirm we need your output first. Running this command with wrong parameters can negatively impact your system, so please wait for further instructions.)

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MIK (m-i-k) said :
#6

Hi

Please find the Details of the command being run.

1. fdisk -l

Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x000c08d1

   Device Boot Start End Blocks Id System
/dev/sda1 2048 31250431 15624192 82 Linux swap / Solaris
/dev/sda2 31250432 976771071 472760320 fd Linux raid autodetect

Disk /dev/sdb: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x0002b161

   Device Boot Start End Blocks Id System
/dev/sdb1 * 2048 31250431 15624192 82 Linux swap / Solaris
/dev/sdb2 31250432 976771071 472760320 fd Linux raid autodetect

Disk /dev/md0: 484.0 GB, 483972153344 bytes
2 heads, 4 sectors/track, 118157264 cylinders, total 945258112 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000

Disk /dev/md0 doesn't contain a valid partition table

2. lsb_release -a

No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 12.04.5 LTS
Release: 12.04
Codename: precise

3. uname -a

Linux Precision 3.13.0-32-generic #57~precise1-Ubuntu SMP Tue Jul 15 03:51:20 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

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Best actionparsnip (andrew-woodhead666) said :
#7

http://forum.qnap.com/viewtopic.php?p=257819

Seems to need a RAID rebuild and you'll be ok.

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MIK (m-i-k) said :
#8

Hi Andrew,

Thanks for the Answer -- will have the Customer Rebuild the RAID and update you guys the status --- Please keep the case open

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MIK (m-i-k) said :
#9

is there any any command to Rebuild the RAID -- my customer is finding difficult.

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MIK (m-i-k) said :
#10

Hi
My Customer had Rebuild the RAID but still the Problem is the same that getting Invalid Partition Table.

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MIK (m-i-k) said :
#11

Cust Formated of the HDDs from windows system and done Rebuild and issue resolved

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MIK (m-i-k) said :
#12

Thanks actionparsnip, that solved my question.