LVM, LUKS, and a bunch of other things put headers with magic sequences at the beginning too, that's why we often call them "headers" Mdadm has a -z option that wipes superblock signatures. Metadata version 1.2 puts its superblock at the beginning, followed by the data space. You may also find the backup copy of GPT at the end of device, which sometimes gets in the way. Metadata version 0.9 puts its superblock at the end of the underlying device, which means that in case of raid 1 (mirror) you can access the data on a single device before assembling RAID - a nice trick to know when you want to boot from raid. I think I had a "device or resource busy" message when I tried to use wipefs to do the job, but I cannot reproduce the problem right now. Sector size (logical/physical): 512 bytes / 4096 bytes You need to stop md array where sda3 is part of this
#FDISK USING WIPEFS INSTALL#
You need to install sys-fs/mdadm to manage Raid array(s)
![fdisk using wipefs fdisk using wipefs](https://averagelinuxuser.com/assets/images/posts/2019-01-16-make-a-bootable-usb-drive-in-linux/4-800x178.jpg)
RAID member was started at boot 'cause RAID was build-in (or as module) in your kernel. Strings) from the specified device to make the signatures invisible for Wipefs can erase filesystem, raid or partition-table signatures (magic Have you tried using wipefs instead of using dd and guessing how much to wipe? According to its man page: Code: What is the "correct" amount for "count" in this case (to properly clear the Linux RAID information)?ĭepends on the RAID version, Assuming it's an mdadm RAID, while v0.9 put the metadata at the start of the partition, at least one of the versions put it at the end. When I clear out a hard disk to reinstall Gentoo from scratch I usually run:ĭd if=/dev/zero of=$ bs=1M status=progress Posted: Mon 7:10 am Post subject: wipe out part containing a linux_raid_member file system Gentoo Forums Forum Index Installing Gentoo Wipe out part containing a linux_raid_member file system
![fdisk using wipefs fdisk using wipefs](https://www.linuxsysadmins.com/wp-content/uploads/2019/02/Stratis-available-block-devices-1068x451.png)
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