Arch Linux

Chrilleee

Member

Registered: 2011-04-27

Posts: 34

[Solved] Can't see GPT disk partitions in Windows 7 (64-bit)

I just added 2 new disks and had them set up equally with GPT and equal partitions, to use the partitions as RAID1 in Arch, and the rest of the storage for Windows. It works as expected in Linux (I guess), but Windows shows them as uninitialized.

Can this be due to the fact that I created the GPT and partitions using fdisk? Caus' gdisk can't see any partitions either when I start it. If so, is there any way to convert it or do I need to redo everything?

The output of "fdisk -l" shows this:

Disk /dev/sdc: 1.8 TiB
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: xxx-random-identidifier-xxx

Device     Start        End    Sectors  Size Type
/dev/sdc1   2048        xx     xx       1.6T Linux RAID

Disk /dev/sdd: 1.8 TiB
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: xxx-random-identidifier-xxx

Device     Start        End    Sectors  Size Type
/dev/sdd1   2048        xx     xx       1.6T Linux RAID

Last edited by Chrilleee (2015-05-10 07:51:54)

Head_on_a_Stick

Member

From: The Wirral

Registered: 2014-02-20

Posts: 9,003

Website

Re: [Solved] Can't see GPT disk partitions in Windows 7 (64-bit)

Please post the output of:

# gdisk -l /dev/sdc
# gdisk -l /dev/sdd

Last edited by Head_on_a_Stick (2015-05-09 18:05:06)

---

Jin, Jîyan, Azadî

Chrilleee

Member

Registered: 2011-04-27

Posts: 34

Re: [Solved] Can't see GPT disk partitions in Windows 7 (64-bit)

Please post the output of:

# gdisk -l /dev/sdc
# gdisk -l /dev/sdd

# gdisk -l /dev/sdc
GPT fdisk (gdisk) version 1.0.0

Partition table scan:
  MBR: protective
  BSD: not present
  APM: not present
  GPT: present

Found valid GPT with protective MBR; using GPT.
Disk /dev/sdc: 3907029168 sectors, 1.8 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): xxx-random-identidifier-xxx
Partition table holds up to 128 entries
First usable sector is 2048, last usable sector is 3907029134
Partitions will be aligned on 2048-sector boundaries
Total free space is 457029134 sectors (217.9 GiB)

Number  Start (sector)    End (sector)  Size       Code  Name
   1            2048      3450000000   1.6 TiB     FD00  

# gdisk -l /dev/sdd
GPT fdisk (gdisk) version 1.0.0

Partition table scan:
  MBR: protective
  BSD: not present
  APM: not present
  GPT: present

Found valid GPT with protective MBR; using GPT.
Disk /dev/sdd: 3907029168 sectors, 1.8 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): xxx-random-identidifier-xxx
Partition table holds up to 128 entries
First usable sector is 2048, last usable sector is 3907029134
Partitions will be aligned on 2048-sector boundaries
Total free space is 457029134 sectors (217.9 GiB)

Number  Start (sector)    End (sector)  Size       Code  Name
   1            2048      3450000000   1.6 TiB     FD00  

Scimmia

Fellow

Registered: 2012-09-01

Posts: 13,729

Re: [Solved] Can't see GPT disk partitions in Windows 7 (64-bit)

Did you not create the partitions you wanted to use with Windows?

Chrilleee

Member

Registered: 2011-04-27

Posts: 34

Re: [Solved] Can't see GPT disk partitions in Windows 7 (64-bit)

Did you not create the partitions you wanted to use with Windows?

No. But shouldn't I be able to see the Linux RAID partition in Windows anyways?

Scimmia

Fellow

Registered: 2012-09-01

Posts: 13,729

Re: [Solved] Can't see GPT disk partitions in Windows 7 (64-bit)

No, you shouldn't.

Chrilleee

Member

Registered: 2011-04-27

Posts: 34

Re: [Solved] Can't see GPT disk partitions in Windows 7 (64-bit)

No, you shouldn't.

Oh, that explains it.

Last edited by Chrilleee (2015-05-09 21:09:43)

Chrilleee

Member

Registered: 2011-04-27

Posts: 34

Re: [Solved] Can't see GPT disk partitions in Windows 7 (64-bit)

Added a Windows partition now. Still the same.
In Windows it looks like this:
http://s2.postimg.org/a63qwgmg9/disks.png

Output from gdisk -l:

# gdisk -l /dev/sdc
GPT fdisk (gdisk) version 1.0.0

Partition table scan:
  MBR: protective
  BSD: not present
  APM: not present
  GPT: present

Found valid GPT with protective MBR; using GPT.
Disk /dev/sdc: 3907029168 sectors, 1.8 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): xxx-random-identidifier-xxx
Partition table holds up to 128 entries
First usable sector is 2048, last usable sector is 3907029134
Partitions will be aligned on 2048-sector boundaries
Total free space is 1407 sectors (703.5 KiB)

Number  Start (sector)    End (sector)  Size       Code  Name
   1            2048      3450000000   1.6 TiB     FD00  
   2      3450001408      3907029134   217.9 GiB   0700  

# gdisk -l /dev/sdd
GPT fdisk (gdisk) version 1.0.0

Partition table scan:
  MBR: protective
  BSD: not present
  APM: not present
  GPT: present

Found valid GPT with protective MBR; using GPT.
Disk /dev/sdd: 3907029168 sectors, 1.8 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): xxx-random-identidifier-xxx
Partition table holds up to 128 entries
First usable sector is 2048, last usable sector is 3907029134
Partitions will be aligned on 2048-sector boundaries
Total free space is 1407 sectors (703.5 KiB)

Number  Start (sector)    End (sector)  Size       Code  Name
   1            2048      3450000000   1.6 TiB     FD00  
   2      3450001408      3907029134   217.9 GiB   0700  

-- mod note: converted img to url --
- WorMzy

Last edited by WorMzy (2015-05-09 23:02:20)

WorMzy

Administrator

From: Scotland

Registered: 2010-06-16

Posts: 13,572

Website

Re: [Solved] Can't see GPT disk partitions in Windows 7 (64-bit)

Chrilleee, please don't embed full-sized screenshots in your posts, use thumbnails or URLs instead. See https://wiki.archlinux.org/index.php/Fo … s_and_code

Thanks.

That being said, I think we're moving into the realms of a Windows problem -- everything seems to be working fine in Arch. You should consult a Windows forum for advice on how to make Windows see existing partitions.

---

Sakura:-
Mobo: MSI MAG X570S TORPEDO MAX // Processor: AMD Ryzen 9 5950X @4.9GHz // GFX: AMD Radeon RX 5700 XT // RAM: 32GB (4x 8GB) Corsair DDR4 (@ 3000MHz) // Storage: 1x 3TB HDD, 6x 1TB SSD, 2x 120GB SSD, 1x 275GB M2 SSD

Making lemonade from lemons since 2015.

Chrilleee

Member

Registered: 2011-04-27

Posts: 34

Re: [Solved] Can't see GPT disk partitions in Windows 7 (64-bit)

Chrilleee, please don't embed full-sized screenshots in your posts, use thumbnails or URLs instead. See https://wiki.archlinux.org/index.php/Fo … s_and_code

Thanks.

That being said, I think we're moving into the realms of a Windows problem -- everything seems to be working fine in Arch. You should consult a Windows forum for advice on how to make Windows see existing partitions.

Sorry, didn't know of that.

I'm not sure I agree with you on that. The problem could be that it has been created in Arch, as Windows 7 should be able to see the GPT partitions out of the box.

EDIT: Anyways, I solved it now by simply Initializing it in Windows (which removes the partition information) and then created the partitions in gdisk again. Now I can access them in both Linux and Windows.

Last edited by Chrilleee (2015-05-10 07:51:43)