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Reading data from an SD card
#1
First step is to mount the SD card

root@10.34.9.236:/opt/ppmac# mount -t vfat /dev/sdb1 /media/sd

Then the data on the SD card will be read at /media/sd.
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#2
How do I mount an SD card? I found this post from 2009, but it doesn't work. Neither /dev/sdb1 nor /media/sd exist.
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#3

Case 1.
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You have a PowerPMAC without Video option the usbmount package is present. This is will usually mount a FAT32 formatted card in the media folder.

1.) Check the folders /media/disk, /media/disk-1 or /media/disk-2 for the files on your SD card.

Case 2.
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If you have a PowerPMAC with the Video option automounting is handled automatically by the nautilus application in the gnome interface. You MUST login to the gnome interface Window manager for this to be in effect. nautilus will automatically mount the SD or USB stick in the /media/disk ... folder.

Method 3
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Manually mount the SD or USB stick for that matter somewhere.
For example

mount -t vfat /dev/sdb1 /mnt or mount -t vfat /dev/sdc1 /mnt

will map the SD card or USB stick to the /mnt folder



(06-22-2011, 05:06 PM)wfsteele Wrote: How do I mount an SD card? I found this post from 2009, but it doesn't work. Neither /dev/sdb1 nor /media/sd exist.

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#4
Thank you hbausley,
but as wfsteele, on my old Power PMAC (without video option) i have no folder begining with disk under /media.

And, in order to manualy mont my SD card, under /dev, i don't have /sdb1 or /sdc1 but only sda, sda1, sda2, sdb, shm

What can i do ?


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#5
I verified Brad and Henry's posts with my PPMAC and it worked fine.

The following command works from Telnet/SSH/serial:

mount -t vfat /dev/sdb1 /mnt/

Can you post the results of the following command:

ls /dev/sd*

I believe this will tell if your kernel is properly recognizing the storage devices.

I get the following on my machine:

ls /dev/sd*
/dev/sda /dev/sda1 /dev/sda2 /dev/sdb /dev/sdb1

Depending on how you want to use the SD card you will want to mount it at startup through a script or mtab/fstab, or just when you need to access it. We are planning on using the SD card for logging and as such will probably always have it plugged in and mounted at bootup.

KEJR
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#6
Thank you KEJR,
You found my problem,

At bootup, SDcard must absolutely be plugged before, and USB must not (only after bootup)
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#7
Reading various threads suggests that auto mounting of SD and USB flash memory only works on non-HDMI capable systems.

If this is the case, can I disable the HDMI software functionality to make an HDMI capable system behave like a non-HDMI board?

Regards - Mat Hubbard
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#8
It appears that the 'usbmount' Linux package is missing on the cards I'm currently playing with. Is it possible to install this package manually, and will usb and sd cards then mount automatically?

Mat.
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