# Force detect/mount uSD card with MangOH green baord

**URL:** <https://mangoh.discourse.group/t/force-detect-mount-usd-card-with-mangoh-green-baord/1521>\
**Category:** mangOH Green\
**Created:** [June 6, 2018, 5:54pm UTC](https://mangoh.discourse.group/t/force-detect-mount-usd-card-with-mangoh-green-baord/1521 "2018-06-06T17:54:31Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![ghaddam](https://avatars.discourse-cdn.com/v4/letter/g/fbc32d/32.png) [@ghaddam](https://mangoh.discourse.group/u/ghaddam)\
**Post date:** [June 6, 2018, 5:54pm UTC](https://mangoh.discourse.group/t/force-detect-mount-usd-card-with-mangoh-green-baord/1521/1 "2018-06-06T17:54:31Z")

</div>

So When I have uSD card already in before i startup the system it shows up under /dev/mmcblk0. When i do dmseg | grep mmc i get the following:

```auto
root@swi-mdm9x15:~# dmesg | grep mmc
[9.166061] mmc0: mci-version: 18
[9.175583] mmc0: bam physical base=0x12182000
[9.179032] mmc0: bam virtual base=0xd0304000
[9.195421] mmc0: BAM device registered. bam_handle=0xce6a0400
[9.213520] mmc0: Qualcomm MSM SDCC-BAM at 0x0000000012182000 irq 130
[9.219105] mmc0: Qualcomm MSM SDCC-DML at 0x0000000012180800
[9.224752] mmc0: No card detect facilities available
[9.234030] mmc0: Qualcomm MSM SDCC-core at 0x0000000012180000 irq 136,0 dma -1 dmacrcri -1
[9.255394] mmc0: 8 bit data mode disabled
[9.258477] mmc0: 4 bit data mode enabled
[9.262475] mmc0: polling status mode disabled
[9.272516] mmc0: MMC clock 400000 -> 48000000 Hz, PCLK 0 Hz
[9.301205] mmc0: Slot eject status = 0
[9.314512] mmc0: Power save feature enable = 1
[9.323515] mmc0: SPS-BAM data transfer mode available
[9.453044] mmc0: host does not support reading read-only switch. assuming write-enable.
[9.482679] mmc0: new high speed SDHC card at address 1234
[9.515458] mmcblk0: mmc0:1234 SA04G 3.70 GiB 
[9.587822] mmcblk0: p1

```

Now the issue is when I try to plug in the uSD card while the device is already running I never am able to detect it. no /dev/mmcblk0 shows and demsg|grep mmc give this

```auto
root@swi-mdm9x15:~# dmesg | grep mmc
[9.603998] mmc0: mci-version: 18
[9.607355] mmc0: bam physical base=0x12182000
[9.610773] mmc0: bam virtual base=0xd0374000
[9.626827] mmc0: BAM device registered. bam_handle=0xce5fbe00
[9.641843] mmc0: Qualcomm MSM SDCC-BAM at 0x0000000012182000 irq 130
[9.647398] mmc0: Qualcomm MSM SDCC-DML at 0x0000000012180800
[9.653074] mmc0: No card detect facilities available
[9.662536] mmc0: Qualcomm MSM SDCC-core at 0x0000000012180000 irq 136,0 dma -1 dmacrcri -1
[9.683931] mmc0: 8 bit data mode disabled
[9.687013] mmc0: 4 bit data mode enabled
[9.691011] mmc0: polling status mode disabled
[9.701052] mmc0: MMC clock 400000 -> 48000000 Hz, PCLK 0 Hz
[9.726964] mmc0: Slot eject status = 0
[9.745704] mmc0: Power save feature enable = 1
[9.770761] mmc0: SPS-BAM data transfer mode available

```

I’m using a 4GB Kingston uSD card. How to force the system to redetect that my SD card is in?