On Wed, Mar 16, 2016 at 7:08 PM, Ray Madigan <[email protected]> wrote:
> That was my original idea, I just can't figure out how to implement it.  I
> formatted it with fdisk as a linux partition, any ext was not available, and
> when I boot /etc/mtab treats it as vFat and postgresql won't init a database
> on it because it can't perform a link.

Boot off emmc, once booted, insert microSD..

Let's assume: /dev/mmcblk1 is microSD (lsblk) to check:

export DISK=/dev/mmcblk1

sudo dd if=/dev/zero of=${DISK} bs=1M count=10

sfdisk >= 2.26.x

sudo sfdisk ${DISK} <<-__EOF__
1M,,L,*
__EOF__

sfdisk <= 2.25.x

sudo sfdisk --unit M ${DISK} <<-__EOF__
1,,L,*
__EOF__

sudo mkfs.ext4 -L rootfs ${DISK}p1

#now formated for ext4...

Regards,

-- 
Robert Nelson
https://rcn-ee.com/

-- 
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