Can’t create a primary, not a logical partition in SD Card

1. Summary

I can’t set primary, not logical partition in my SD Card.

After my attempts, I can’t write anything to SD Card.

2. Hardware and software

2.1. Smartphone

  1. ARK Benefit S401,
  2. Android 5.1.1,
  3. CyanogenMod 12.1 ROM,
  4. Rooted, Busybox installed,
  5. TWRP Recovery,
  6. Successful worked with another and non-mounted SD Cards.

2.2. PC

  1. Windows 10 Enterprise LTSB EN,
  2. MiniTool Partition Wizard Home Edition 10.0,
  3. EaseUS Partition Master (Free) 12.8.

2.3. SD Card

  1. OSMR 8 GB (7,5 de-facto),
  2. 10 class,
  3. Error checking:

    Error checking

  4. Surface Test:


  5. I have card reader as well.

3. Steps to reproduce

3.1. Reason

I have 1,7 GB User Partition in my phone, it’s not enough for me. I want to move my apk + dex + lib files to SD Card. I read, that I need to use Link2SD and to create new primary partition in my SD Card.

3.2. Partition creating

I create backup all my MicroSD data.

I try to create partitions, use these instructions:

  1. How to use Link2SD App for Partition SD Card — Full Guide,
  2. [TUT]How to Create Partition in SD card/MicroSD for Windows user.

Apply pending

4. Result

  1. I select primary, but in result I get logical, not primary partition:

    Not primary

  2. I can’t move my apk + lib + dex to SD Card:

    Second partition not found


  3. After my operations I can’t to make screenshots, download applications to SD Card. I probably can’t write any data to SD card. I get errors:

    Can’t take screenshot due to limited storage space, or it isn’t allowed by the app or your organization

    Mod.apk_download: open failed: EROFS (Read-only file system)

5. Not helped

  1. I create logical, not primary partition for 2,5 GB again.
  2. I create ext2 and ext3 partitions instead of ext4.
  3. I try partition recovery:




6. Formatting

1. SD Memory Card Formation

I try format my SDCard use SD Memory Card Formation. Quick and overwrite formatting failed.


2. Diskpart

I try to format my MicroSD use diskpart:

C:\System Volume Information>diskpart

Microsoft DiskPart version 10.0.14393.0

Copyright (C) 1999-2013 Microsoft Corporation.
On computer: DESKTOP-EEOT0TN

DISKPART> list disk

  Disk ###  Status         Size     Free     Dyn  Gpt
  --------  -------------  -------  -------  ---  ---
  Disk 0    Online          931 GB  4096 KB
  Disk 1    Online         7681 MB      0 B

DISKPART> select disk 1

Disk 1 is now the selected disk.

DISKPART> attributes disk clear readonly

Disk attributes cleared successfully.

DISKPART> select partition 1

Partition 1 is now the selected partition.

DISKPART> active

DiskPart marked the current partition as active.

DISKPART> format fs=fat32

    0 percent completed

DiskPart has encountered an error: The parameter is incorrect.
See the System Event Log for more information.


Leaving DiskPart...

3. chkdsk

chkdsk g: /f /r
The type of the file system is FAT32.
Volume Serial Number is 0352-6F30
Windows is verifying files and folders...
File and folder verification is complete.
Windows is verifying free space...
Free space verification is complete.

Windows has scanned the file system and found no problems.
No further action is required.
    5,231,600 KB total disk space.
            4 KB in 2 hidden files.
        1,236 KB in 295 folders.
    1,902,568 KB in 1,076 files.
    3,327,788 KB are available.

        4,096 bytes in each allocation unit.
    1,307,900 total allocation units on disk.
      831,947 allocation units available on disk.
Cannot write boot sector.

4. HDD Low Level Format Tool

After these actions nothing has changed.



7. Do not offer

  1. Please do not suggest me to buy new telephone/SD Card/PC.

2 Answers

1. Answer

Unfortunately, in this case you need buy a new SD Card.

2. Argumentation

  • 4pda post:

Если у вас не записываются новые данные на карту, а старые после удаления появляются вновь, и форматирование не помогает — карта труп, и восстановить её не удастся!

Translate on English:


  1. New data don’t write to SD Card (4.3 item of my question)
  2. Old data show again
  3. Formatting doesn’t help (6 item)


  • You lost your SD Card.

I could not refute this in my case.

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