Re: ext4 superblock overwritten

2016-12-09 Thread Thomas Schmitt
Hi, Heinz Nimmervoll wrote: > https://i.stack.imgur.com/ciaLG.png Hard to say from what the right side data might stem. Left side indeed beared the ext4 magic number at bytes 0x38 and 0x39. > How is it possible, that even the magic number (and everything else) got > overwritten? Most natural e

Re: ext4 superblock overwritten

2016-12-09 Thread Yvan Masson
Hi, Le vendredi 09 décembre 2016 à 09:15 +0100, Heinz Nimmervoll a écrit : > System: > Embedded board with Atmel SAM9x25 > Debian Wheezy Kernel 3.11.6 > 32GB Samsung SDHC card with ext4 root- partition (journal activated) > After system running two weeks or so superblock from rootfs (ext4) at > bl

ext4 superblock overwritten

2016-12-09 Thread Heinz Nimmervoll
System: Embedded board with Atmel SAM9x25 Debian Wheezy Kernel 3.11.6 32GB Samsung SDHC card with ext4 root- partition (journal activated) After system running two weeks or so superblock from rootfs (ext4) at block 0 got overwritten with "trash data". Here is a hex comparison between the an