dd-multi.sh: change partitioning procedure

Initially write 10MB of 0's instead of 1MB to make sure any tables
at the beginning are really gone.

Rather than calling 'partprobe' with no arguments, explicitly pass
the list of devices to re-read.

'fdisk' is used to create the 2nd (/home) partition. Do not do that
in the background but instead synchronously for each device. Add a
'sync' afterwards to hopefully create a barrier before rescanning
the devices. This is should address a problem where 'partprobe' is
run too early and the kernel does not find the 2nd partition of the
last device.

Signed-off-by: John Ogness <john.ogness@linutronix.de>

0 files changed, 0 insertions, 0 deletions