13.06.2016 01:49, Henk Slager пишет: > On Sun, Jun 12, 2016 at 11:22 PM, Maximilian Böhm <win...@gmail.com> wrote: >> Hi there, I did something terribly wrong, all blame on me. I wanted to >> write to an USB stick but /dev/sdc wasn't the stick in this case but >> an attached HDD with GPT and an 8 TB btrfs partition… > > GPT has a secondary copy at the end of the device, so maybe gdisk can > reconstruct in first main one at the beginning of the disk, I don't > know all gdisk commands.
kernel should automatically fall back to secondary GPT if booted with gpt=1 parameter. Otherwise it is 'x' for expert mode and 'b' to rebuild primary GPT from secondary copy. Also 'c' to load partition information from secondary (without writing anything). But note that kernel will also check for valid PMBR (unless gpt is force with parameter mentioned above), so you will need yet another 'x' to enter second expert mode and 'n' to create new protective MBR. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
