mounting ntfs partition

[peterbsd]

Hello,

I created NTFS partition in Win os and formated it like NTFS.
In OpenBSD when I try fdisk sd0 then I am seeing new partition number 8 created by win os.
I have installed ntfs_3g but I am not able to mount it.

What device path should I use in mount_ntfs ?

[jggimi]

You will need to add the new GPT partition to the OpenBSD disklabel manually. The disklabel(8) program will not automatically scan MBR or GPT partition tables if there is already a disklabel present on the drive.

[peterbsd]

I tried to add new partition in disklabel interactive mode and tried used offset of NTFS partition displayed in fdisk.
I receive error describing that it is out of OpenBSD bounds, I am attaching also fdisk output (partition number 8 is NTFS).
Amazing for me is that I am able to mount another FAT partition even it is also out of OpenBSD bounds. I don't understand it. What should I try ?

sd# disklabel -E sd0
Label editor (enter '?' for help at any prompt)
sd0> p
OpenBSD area: 1231843328-1481843328; size: 250000000; free: 77489248
#                size           offset  fstype [fsize bsize   cpg]
  a:          4194304       1231843328  4.2BSD   2048 16384 12960 # /
  b:           524288       1236037632    swap                    # none
  c:       1953525168                0  unused                    
  d:         83900736       1236561920  4.2BSD   2048 16384 12960 # /usr
  e:         83891424       1320462656  4.2BSD   2048 16384 12960 # /home
  i:            32734               34 unknown                    
  j:          1124352            32768   MSDOS                    
  k:        409600000          1159168   MSDOS                    
  l:          1679360        410759168   MSDOS                    
  m:        819200000        412438528   MSDOS                    
  n:           204800       1231638528   MSDOS                    
  o:          8192000       1481844736   MSDOS                    
sd0> a p
offset: [1404354080] 1490036736
'p' aligned offset 1490036736 lies outside the OpenBSD bounds or inside another partition

fdisk output:

bsd# fdisk sd0
Disk: sd0       Usable LBA: 34 to 1953525134 [1953525168 Sectors]
   #: type                                 [       start:         size ]
------------------------------------------------------------------------
   0: e3c9e316-0b5c-4db8-817d-f92df00215ae [          34:        32734 ]
   1: Microsoft basic data                 [       32768:      1124352 ]
   2: Microsoft basic data                 [     1159168:    409600000 ]
   3: Microsoft basic data                 [   410759168:      1679360 ]
   4: Microsoft basic data                 [   412438528:    819200000 ]
   5: EFI Sys                              [  1231638528:       204800 ]
   6: OpenBSD                              [  1231843328:    250000000 ]
   7: Microsoft basic data                 [  1481844736:      8192000 ]
   8: Microsoft basic data                 [  1490036736:     10240000 ]

[jggimi]

To create a partition outside the bounds of the OpenBSD GPT partition with the disklabel(8) editor, you will need to use the "b" command to set a different bound start / end.

[peterbsd]

Originally Posted by jggimi

To create a partition outside the bounds of the OpenBSD GPT partition with the disklabel(8) editor, you will need to use the "b" command to set a different bound start / end.

Thank you,
I don't understand that I can mount FAT partition /dev/sd0o even it is out of bounds. o: partition was created by OS installation.
Does exist different way to create partition than moving boundend ?

[jggimi]

Once a disklabel has been written, the MBR/GPT partition table will not be scanned again.

You can tell the disklabel(8) program to ignore the on-disk disklabel and re-scan, but then you will lose all disklabel partitions.

There are architectures which don't use MBR or GPT.