Anssi Saari wrote: > Victor Sudakov <vas@sibptus.ru> writes: > > > "wipefs -t btrfs -f -a /dev/nvme1n1" did the job. > > > > Still wondering where those labels are stored on disk in Linux. > > Didn't wipefs tell you? No. It just told me the offset, but I have no idea what is located at that offset, and this can be important. > I don't have any btrfs but for me wipefs prints > at which offset it found which label. Like this, for a Linux swap > partition: > > # wipefs /dev/sdb5 > DEVICE OFFSET TYPE UUID LABEL > sdb5 0xff6 swap 8af9fb67-38ca-4c91-bbbd-d53c5ac1f30a > > And if I hexdump a bit of /dev/sdb5 I get: > > 000ff0 00 00 00 00 00 00 53 57 41 50 53 50 41 43 45 32 >......SWAPSPACE2< > 001000 01 00 00 00 8a f9 fb 67 38 ca 4c 91 bb bd d5 3c >.....ùûg8ÊL.»½Õ<< > 001010 5a c1 f3 0a 00 00 15 00 80 00 ff ff ff ff 03 00 >ZÁó.......ÿÿÿÿ..< > 001020 00 00 01 00 00 00 00 00 00 00 3d b5 04 00 00 00 >..........=µ....< > So what is that at 0xff6? GPT, MBR, some superblock, some reserved sector? -- Victor Sudakov VAS4-RIPE http://vas.tomsk.ru/ 2:5005/49@fidonet
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