Re: Hard drive starting at 63

2017-07-17 Thread Michael Schwendt
On Mon, 17 Jul 2017 02:42:15 -0400, Digimer wrote:

> On 2017-07-17 02:00 AM, Samuel Sieb wrote:
> > On 07/16/2017 04:25 PM, Patrick Dupre wrote:  
> >> I have a hard drive startaing at 63
> >>
> >> Partition 1 does not start on physical sector boundary.
> >> 1+0 records in
> >> 1+0 records out
> >> dev/sdb1  *   6320500472049985  1001M  c W95 FAT32 (LBA)
> >> /dev/sdb2 2050048   14338047   12288000   5.9G 83 Linux
> >>
> >> Can I fix it easily?  
> > 
> > Fix what?  
> 
> I'm guessing shifting the partition boundaries to align for optimal
> performance.

That cannot be conclude from the question, since it is much too vague.
It would be possible to shift the start of the partition into two directions,
either keeping the 31 KiB MBR gap or reducing it. So, what is the goal?
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Re: Hard drive starting at 63

2017-07-17 Thread Digimer
On 2017-07-17 02:00 AM, Samuel Sieb wrote:
> On 07/16/2017 04:25 PM, Patrick Dupre wrote:
>> I have a hard drive startaing at 63
>>
>> Partition 1 does not start on physical sector boundary.
>> 1+0 records in
>> 1+0 records out
>> dev/sdb1  *   6320500472049985  1001M  c W95 FAT32 (LBA)
>> /dev/sdb2 2050048   14338047   12288000   5.9G 83 Linux
>>
>> Can I fix it easily?
> 
> Fix what?

I'm guessing shifting the partition boundaries to align for optimal
performance.

>> Actually, this was the initial disk of the computer which came
>> with a fat32 partition
>> Can I backup the partition, and modify the partition table for
>> this partition only without any trouble?
> 
> I don't understand what you're trying to do, but the direct answer to
> those questions is yes.

Probably not, unless they mean to back up all data, delete the old
partition, recreate the partition properly aligned and then restore the
data.

Maybe I'm wrong though, parted's abilities have surprised me before.

>> I guess that it is a boot partition recognized by grub
> 
> You got the computer without Windows installed?  The default in that
> case is often freedos, which appears to be what grub detected it as.
> 
>> In addition, sdb2 is seen as a linux partition by fdisk,
> 
> fdisk just tells you what the partition is marked as in the partition
> table.
> 
>> but as a ntfs partition by gparted (and testdisk). I guess that it
>> correct.
> 
> gparted and testdisk actually probe the filesystem because they also
> deal with the contents of the partitions.
> 
>>  HPFS - NTFS127 155 29   892 128  4   12288000
>>   NTFS, blocksize=4096, 6291 MB / 6000 MiB
>>
>> fsck /dev/sdb2
>> fsck from util-linux 2.28.2
>> Unsupported: replay_log()
>> Volume is dirty.
>> Unsupported: check_volume()
>> Checking 4096 MFT records.
>> Unsupported cases found.
>> ntfsck was unable to run properly.
>>
>>   ntfs-3g.probe /dev/sdb2
>> ERROR: ntfs-3g.probe: Probe type is missing
>>
>> But, I can mount it.
> 
> If you can mount it as ntfs and see files, then I guess it's ntfs.
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-- 
Digimer
Papers and Projects: https://alteeve.com/w/
"I am, somehow, less interested in the weight and convolutions of
Einstein’s brain than in the near certainty that people of equal talent
have lived and died in cotton fields and sweatshops." - Stephen Jay Gould
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Re: Hard drive starting at 63

2017-07-17 Thread Samuel Sieb

On 07/16/2017 04:25 PM, Patrick Dupre wrote:

I have a hard drive startaing at 63

Partition 1 does not start on physical sector boundary.
1+0 records in
1+0 records out
dev/sdb1  *   6320500472049985  1001M  c W95 FAT32 (LBA)
/dev/sdb2 2050048   14338047   12288000   5.9G 83 Linux

Can I fix it easily?


Fix what?


Actually, this was the initial disk of the computer which came
with a fat32 partition
Can I backup the partition, and modify the partition table for
this partition only without any trouble?


I don't understand what you're trying to do, but the direct answer to 
those questions is yes.



I guess that it is a boot partition recognized by grub


You got the computer without Windows installed?  The default in that 
case is often freedos, which appears to be what grub detected it as.



In addition, sdb2 is seen as a linux partition by fdisk,


fdisk just tells you what the partition is marked as in the partition table.


but as a ntfs partition by gparted (and testdisk). I guess that it correct.


gparted and testdisk actually probe the filesystem because they also 
deal with the contents of the partitions.



 HPFS - NTFS127 155 29   892 128  4   12288000
  NTFS, blocksize=4096, 6291 MB / 6000 MiB

fsck /dev/sdb2
fsck from util-linux 2.28.2
Unsupported: replay_log()
Volume is dirty.
Unsupported: check_volume()
Checking 4096 MFT records.
Unsupported cases found.
ntfsck was unable to run properly.

  ntfs-3g.probe /dev/sdb2
ERROR: ntfs-3g.probe: Probe type is missing

But, I can mount it.


If you can mount it as ntfs and see files, then I guess it's ntfs.
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