Re: /dev/loop

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With another disk, I have,

Disk /dev/sdc: 465.8 GiB, 500107862016 bytes, 976773168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x00000000

Device     Boot     Start       End   Sectors   Size Id Type
/dev/sdc1  *     27265024  39847935  12582912     6G  7 HPFS/NTFS/exFAT
/dev/sdc2        39847936  50333695  10485760     5G  7 HPFS/NTFS/exFAT
/dev/sdc3        50335744  62918655  12582912     6G 82 Linux swap / Solaris
/dev/sdc4        62918656 976773119 913854464 435.8G  f W95 Ext'd (LBA)
/dev/sdc5        62920704  63944703   1024000   500M 83 Linux
/dev/sdc6       310751232 399998975  89247744  42.6G 83 Linux

or

Disk /dev/sdc - 500 GB / 465 GiB - CHS 60801 255 63
Current partition structure:
     Partition                  Start        End    Size in sectors

 1 * HPFS - NTFS           1697  43 11  2480 106 58   12582912
 2 P HPFS - NTFS           2480 106 59  3133  32 35   10485760
 3 P Linux Swap            3133  65  5  3916 128 52   12582912
 4 E extended LBA          3916 128 53 60801  80 15  913854464
 5 L Linux                 3916 161 22  3980  95 19    1024000
   X extended             19343  93  1 24898 200  6   89247822
 6 L Linux                19343  94 16 24898 200  6   89247744 [backup]


Disk /dev/sdc6 - 45 GB / 42 GiB - CHS 5555 255 63
Current partition structure:
     Partition                  Start        End    Size in sectors


Partition sector doesn't have the endmark 0xAA55

The most important partition is the sdc6 where I have my backups
Actually, only a few numbers of files (but big).
There are gaps again, lvm partitions.

sdc5 is a /boot, I can mount it, but there are few information.

Any tools that you could suggest?

testdisk on /dev/sd6 gives:
Disk /dev/sdc6 - 45 GB / 42 GiB - CHS 5555 255 63

The harddisk (45 GB / 42 GiB) seems too small! (< 65 GB / 60 GiB)
Check the harddisk size: HD jumpers settings, BIOS detection...

The following partitions can't be recovered:
     Partition               Start        End    Size in sectors
>  Linux                 1409 145 17  6964 251  7   89247744 [backup]
   Linux                 2404 112 13  7959 218  3   89247744 [backup]


It looks like that the LVM partitions are the most of issues.

I really do not understand how 3 HD can fail simultaneously.


===========================================================================
 Patrick DUPRÉ                                 | | email: pdupre@xxxxxxx
 Laboratoire de Physico-Chimie de l'Atmosphère | |
 Université du Littoral-Côte d'Opale           | |
 Tel.  (33)-(0)3 28 23 76 12                   | | Fax: 03 28 65 82 44
 189A, avenue Maurice Schumann                 | | 59140 Dunkerque, France
===========================================================================


> Sent: Friday, July 14, 2017 at 3:19 AM
> From: "Patrick Dupre" <pdupre@xxxxxxx>
> To: users@xxxxxxxxxxxxxxxxxxxxxxx
> Subject: Re: /dev/loop
>
> Yes, I did not partition the disk with gaps.
> 
> 
> ===========================================================================
>  Patrick DUPRÉ                                 | | email: pdupre@xxxxxxx
>  Laboratoire de Physico-Chimie de l'Atmosphère | |
>  Université du Littoral-Côte d'Opale           | |
>  Tel.  (33)-(0)3 28 23 76 12                   | | Fax: 03 28 65 82 44
>  189A, avenue Maurice Schumann                 | | 59140 Dunkerque, France
> ===========================================================================
> 
> 
> > Sent: Friday, July 14, 2017 at 2:59 AM
> > From: "Samuel Sieb" <samuel@xxxxxxxx>
> > To: users@xxxxxxxxxxxxxxxxxxxxxxx
> > Subject: Re: /dev/loop
> >
> > On 07/13/2017 05:11 PM, Patrick Dupre wrote:
> > > I tried to recover the partition table for 1 disk.
> > > I worked, but there are plenty of issues.
> > > 
> > > Device     Boot     Start       End   Sectors   Size Id Type
> > > /dev/sdd1  *     24981075  36258704  11277630   5.4G  7 HPFS/NTFS/exFAT
> > > /dev/sdd2        36258705  46508174  10249470   4.9G  7 HPFS/NTFS/exFAT
> > > /dev/sdd3        60030976 206895103 146864128    70G 8e Linux LVM
> > > /dev/sdd4       206895104 488396799 281501696 134.2G  f W95 Ext'd (LBA)
> > > /dev/sdd5       206899200 290785279  83886080    40G 8e Linux LVM
> > > /dev/sdd6       317001728 405065727  88064000    42G 83 Linux
> > > 
> > > As you can see this table is wrong
> > 
> > You don't say why you think it's wrong.  I do see that there are some 
> > strange gaps.   Particularly the first partition is nowhere near the 
> > start of the disk.
> > 
> > > The harddisk (45 GB / 41 GiB) seems too small! (< 60 GB / 56 GiB)
> > > Check the harddisk size: HD jumpers settings, BIOS detection...
> > 
> >  > Disk /dev/sdd: 232.9 GiB, 250059350016 bytes, 488397168 sectors
> > 
> > Where are you getting that number?  Fdisk says that the harddisk size is 
> > 233 GB, or 250GB in marketing numbers.
> testdisk says
> 
> > _______________________________________________
> > users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx
> > To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx
> >
> _______________________________________________
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> To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx
>
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