# micro-SD card does not work on mangOH Red

**URL:** <https://mangoh.discourse.group/t/micro-sd-card-does-not-work-on-mangoh-red/856>\
**Category:** mangOH Red\
**Created:** [October 30, 2017, 8:17pm UTC](https://mangoh.discourse.group/t/micro-sd-card-does-not-work-on-mangoh-red/856 "2017-10-30T20:17:47Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![MiniMax](https://avatars.discourse-cdn.com/v4/letter/m/e5b9ba/32.png) [@MiniMax](https://mangoh.discourse.group/u/MiniMax)\
**Post date:** [October 30, 2017, 8:17pm UTC](https://mangoh.discourse.group/t/micro-sd-card-does-not-work-on-mangoh-red/856/1 "2017-10-30T20:17:47Z")

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I tried to install 2 different SanDisk cards: 16GB and 8GB.  
Both the cards do not work.

[9.456279] mmc0: mci-version: 18  
[9.465557] mmc0: bam physical base=0x12182000  
[9.469006] mmc0: bam virtual base=0xd01fc000  
[9.485457] mmc0: BAM device registered. bam\_handle=0xce5cba00\<6\>[9.490645] sps:REVISION of BAM 0xd01fc000 is 0x5.  
[9.503860] mmc0: Qualcomm MSM SDCC-BAM at 0x0000000012182000 irq 130  
[9.509446] mmc0: Qualcomm MSM SDCC-DML at 0x0000000012180800  
[9.515061] mmc0: No card detect facilities available  
[9.524370] mmc0: Qualcomm MSM SDCC-core at 0x0000000012180000 irq 136,0 dma -1 dmacrcri -1  
[9.545704] mmc0: 8 bit data mode disabled  
[9.548786] mmc0: 4 bit data mode enabled  
[9.552784] mmc0: polling status mode disabled  
[9.562887] mmc0: MMC clock 400000 -\> 48000000 Hz, PCLK 0 Hz  
[9.591362] mmc0: Slot eject status = 0  
[9.604669] mmc0: Power save feature enable = 1  
[9.613734] mmc0: SPS-BAM data transfer mode available  
[9.783091] mmc0: msmsdcc\_switch\_io\_voltage: MCIDATIN\_3\_0 are still not all ones  
[10.144391] mmc0: mmc\_sd\_init\_card() failure (err = -110)  
[10.155653] mmc0: error -110 whilst initialising SD card

What can cause problems ?

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**Author:** ![dfrey](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/dfrey/32/303_2.png) [@dfrey](https://mangoh.discourse.group/u/dfrey)\
**Post date:** [October 30, 2017, 9:15pm UTC](https://mangoh.discourse.group/t/micro-sd-card-does-not-work-on-mangoh-red/856/2 "2017-10-30T21:15:52Z")

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Did you install the SD cards before powering up the unit? I think there is a limitation that prevents hotplug from working.

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**Author:** ![MiniMax](https://avatars.discourse-cdn.com/v4/letter/m/e5b9ba/32.png) [@MiniMax](https://mangoh.discourse.group/u/MiniMax)\
**Post date:** [October 30, 2017, 9:18pm UTC](https://mangoh.discourse.group/t/micro-sd-card-does-not-work-on-mangoh-red/856/3 "2017-10-30T21:18:09Z")

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I have powered the board after the card had been inserted

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**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, 10:51pm UTC](https://mangoh.discourse.group/t/micro-sd-card-does-not-work-on-mangoh-red/856/4 "2018-06-06T22:51:11Z")

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@dfrey So there i no way to detect the SD card if u insert it after power up?

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**Author:** ![asyal](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/asyal/32/78_2.png) [@asyal](https://mangoh.discourse.group/u/asyal)\
**Post date:** [June 7, 2018, 8:33am UTC](https://mangoh.discourse.group/t/micro-sd-card-does-not-work-on-mangoh-red/856/5 "2018-06-07T08:33:51Z")

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Yes, this is not a mangoh red thing but the module doesn’t allow you to do that