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#1 2016-06-05 09:13:27

Naddan
Member
From: UK
Registered: 2015-11-17
Posts: 35

Installer changes partition table [Solved]

Hi guys,

My laptop is using a SSD and a normal HD. I manually partitioned both disks using fdisk. Everything is ok, partitions are aligned. Since I am doing a bual boot, I installed fedora 23 first. I set fedora in certain partition I already made. Everything goes well. Then I tried to install bunsen, choosing the partitions I want to use for the bunsen installation from those that I already made. I do not change the size of those partitions. Then after installation, the partition table of the HD is messed up! It is not aligned anymore.

Some description of the HD:

sector size (logical/physical) 512 bytes / 4096 bytes

Fedora does not have any problem at all with the partition table, however bunsen installer has issies with it.

Any suggestiong how to stop bunsen installer to mess up with the partition table?

Kind regards

Naddan

Last edited by Naddan (2016-06-13 19:47:40)

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#2 2016-06-05 10:01:40

Head_on_a_Stick
Member
From: London
Registered: 2015-09-29
Posts: 8,759
Website

Re: Installer changes partition table [Solved]

Naddan wrote:

sector size (logical/physical) 512 bytes / 4096 bytes

This does *not* indicate that your partition table is misaligned.

A correctly aligned drive will have the first partition at sector 2048

Please post the full output of:

sudo parted -l # that's a letter ell, not a number one

“Et ignotas animum dimittit in artes.” — Ovid, Metamorphoses, VIII., 18.

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#3 2016-06-05 10:03:46

twoion
ほやほや
Registered: 2015-08-10
Posts: 2,604

Re: Installer changes partition table [Solved]

Naddan wrote:

Hi guys,

My laptop is using a SSD and a normal HD. I manually partitioned both disks using fdisk. Everything is ok, partitions are aligned. Since I am doing a bual boot, I installed fedora 23 first. I set fedora in certain partition I already made. Everything goes well. Then I tried to install bunsen, choosing the partitions I want to use for the bunsen installation from those that I already made. I do not change the size of those partitions. Then after installation, the partition table of the HD is messed up! It is not aligned anymore.

Some description of the HD:

sector size (logical/physical) 512 bytes / 4096 bytes

Fedora does not have any problem at all with the partition table, however bunsen installer has issies with it.

Any suggestiong how to stop bunsen installer to mess up with the partition table?

Kind regards

Naddan

Please give a clear definition of what you mean by saying 'messed up' as well as full fdisk (MBR) or gdisk output (GPT) of the partition table(s).


The show must go on.

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#4 2016-06-12 18:22:46

Naddan
Member
From: UK
Registered: 2015-11-17
Posts: 35

Re: Installer changes partition table [Solved]

Head_on_a_Stick wrote:
Naddan wrote:

sector size (logical/physical) 512 bytes / 4096 bytes

This does *not* indicate that your partition table is misaligned.

A correctly aligned drive will have the first partition at sector 2048

Please post the full output of:

sudo parted -l # that's a letter ell, not a number one

Hi Head_on_a_Stick,

Of course that that does not mean the partion is not aligned, however as I said, after installation, and running fdisk -l the partion table is not the same as I configured with fdisk (yes I made the partion table and write it to the disk), so the partion table is different and in addition there is the fdisk warning:

Partition does not start on physical sector boundary

Yes when I made manually the partion table there was not error at all.

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#5 2016-06-12 18:33:03

Naddan
Member
From: UK
Registered: 2015-11-17
Posts: 35

Re: Installer changes partition table [Solved]

twoion wrote:
Naddan wrote:

Hi guys,

My laptop is using a SSD and a normal HD. I manually partitioned both disks using fdisk. Everything is ok, partitions are aligned. Since I am doing a bual boot, I installed fedora 23 first. I set fedora in certain partition I already made. Everything goes well. Then I tried to install bunsen, choosing the partitions I want to use for the bunsen installation from those that I already made. I do not change the size of those partitions. Then after installation, the partition table of the HD is messed up! It is not aligned anymore.

Some description of the HD:

sector size (logical/physical) 512 bytes / 4096 bytes

Fedora does not have any problem at all with the partition table, however bunsen installer has issies with it.

Any suggestiong how to stop bunsen installer to mess up with the partition table?

Kind regards

Naddan

Please give a clear definition of what you mean by saying 'messed up' as well as full fdisk (MBR) or gdisk output (GPT) of the partition table(s).

Hi twoion,

This is the partition table I made:

Disk /dev/sdb: 500.1 GB, 500107862016 bytes, 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 label type: dos
Disk identifier: 0x06a6d2c0

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1   *        4096     1093631      544768   83  Linux
/dev/sdb2         1093632    64008191    31457280   83  Linux
/dev/sdb3        64008192    80785407     8388608   83  Linux
/dev/sdb4        80785408   976773167   447993880    5  Extended
/dev/sdb5        80789504    84983807     2097152   83  Linux
/dev/sdb6        84987904   110153727    12582912   83  Linux
/dev/sdb7       110157824   135323647    12582912   83  Linux
/dev/sdb8       135327744   160493567    12582912   83  Linux
/dev/sdb9       160497664   185663487    12582912   83  Linux
/dev/sdb10      185667584   269553663    41943040   83  Linux
/dev/sdb11      269557760   976773167   353607704   83  Linux

And after installation it was like this:

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1   *        4096     1093631      544768   83  Linux
/dev/sdb2         1093632    64008191    31457280   83  Linux
/dev/sdb3        64008192    80785407     8388608   83  Linux
/dev/sdb4        80785408   976773167   447993880    5  Extended
/dev/sdb5        80785410    84983807     2097152   83  Linux
/dev/sdb6        84987904   110153727    12582912   83  Linux
/dev/sdb7       110157824   135323647    12582912   83  Linux
/dev/sdb8       135327744   160493567    12582912   83  Linux
/dev/sdb9       160497664   185663487    12582912   83  Linux
/dev/sdb10      185667584   269553663    41943040   83  Linux
/dev/sdb11      269557760   976773167   353607704   83  Linux

Partition 5 does not start on physical sector boundary

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#6 2016-06-12 19:03:17

Horizon_Brave
Operating System: Linux-Nettrix
Registered: 2015-10-18
Posts: 1,473

Re: Installer changes partition table [Solved]

So your partitions sdb1, sdb2, sdb3 are occupied by Fedora? and you have Bunsen starting on sdb5? (the first extended partition)   And you're wondering why there is a change from the Start sector of  80789504    and End sector of  8498380... to the current Start sector of 80785410   and End sector of  84983807?


"I have not failed, I have found 10,000 ways that will not work" -Edison

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#7 2016-06-12 19:25:52

Head_on_a_Stick
Member
From: London
Registered: 2015-09-29
Posts: 8,759
Website

Re: Installer changes partition table [Solved]

Naddan wrote:

Partition 5 does not start on physical sector boundary

^ This is not important.

See https://unix.stackexchange.com/question … partitions


“Et ignotas animum dimittit in artes.” — Ovid, Metamorphoses, VIII., 18.

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#8 2016-06-13 19:19:58

Naddan
Member
From: UK
Registered: 2015-11-17
Posts: 35

Re: Installer changes partition table [Solved]

Head_on_a_Stick wrote:
Naddan wrote:

Partition 5 does not start on physical sector boundary

^ This is not important.

See https://unix.stackexchange.com/question … partitions

Hi,

Got it!

Just a aside note, I think the installer should be less intrusive, like the one from fedora.

Thanks!

Naddan

Last edited by Naddan (2016-06-13 19:23:12)

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