My SD card is getting corrupted after issuing the reboot command and
de-powering the board.
Are you sure it was unmount before shutting down the system ?
BTW.:
Even if you do unmount it you are not safe. An SD-Card (like all similar
flash media) does an internal wear leveling. This can take an
unspecified amount of time after any write request. If you de-power the
SD-Card before this timespan is over it might be corrupted. Not only the
newly written data might be corrupt but any data on the card. I ever
read reports claiming that it can get so seriously corrupted that it
could not be formatted any more and a low-level formatting with a
special tool was necessary.
-Michael
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