On 2018/8/29 下午8:49, Pierre Couderc wrote: > I want to reinstall a RAID1 btrfs system (wchis is now under debian > stretch, and will be reinstalled in stretch). If you still want to use btrfs, just umount the original fs, and # mkfs.btrfs -f <old devices> Then a completely new btrfs. > > How to correctly "erase" it ? Not truly hard erase it, but so that old > data does not appear... If not planing to use btrfs, umount the fs and then wipefs -fa <old devices> Thanks, Qu > > It is not clear in the wiki. > > Thanks > > PC >
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