Differences

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--- linux:notes:drive_wipe [2025/10/21 03:46] – Sean Rhone
+++ linux:notes:drive_wipe [2026/05/21 18:55] (current) – Sean Rhone
@@ Line 14: / Line 14: @@
   * [[linux:notes:disk_gpt_format|Disk Format (GPT)]]
   * [[linux:notes:rsync_nas|Drive-to-drive rsync]]
+====== LiveUSB Maintenance ======
+****
+  sudo umount '/dev/sda'* | sudo dosfsck -a -w -v '/dev/sda2' && sudo e2fsck -D -E 'discard,optimize_extents,inode_count_fullmap' -f -v -y '/dev/sda3'
 ====== Tools ======
@@ Line 82: / Line 88: @@
 <code>sudo dd if='/dev/zero' of='/dev/nvme0n1' count='1024'</code>
+===== sda USB=====
+  lsblk
+  sudo umount '/dev/sda'* || sudo wipefs -a -f '/dev/sda' && sudo dd if='/dev/zero' of='/dev/sda' count='18096' && sync
 ===== sda/b/c =====
@@ Line 103: / Line 115: @@
 ****
-<code>sudo blkdiscard --force --verbose '/dev/sda' && sudo hdparm --user-master u --security-set-pass 'x' '/dev/sda' && sudo hdparm --user-master u --security-erase 'x' '/dev/sda' && sudo hdparm --user-master u --security-set-pass 'x' '/dev/sda' && sudo hdparm --user-master u --security-erase-enhanced 'x' '/dev/sda' && sudo rm -f '/sys/firmware/efi/efivars/'* || sync</code>
+<code>sudo blkdiscard --force --verbose '/dev/sda' && sleep '0.5' && sudo hdparm --user-master u --security-set-pass 'x' '/dev/sda' && sleep '0.5' && sudo hdparm --user-master u --security-erase 'x' '/dev/sda' && sleep '0.5' && sudo hdparm --user-master u --security-set-pass 'x' '/dev/sda' && sleep '0.5' && sudo hdparm --user-master u --security-erase-enhanced 'x' '/dev/sda' && sudo rm -f '/sys/firmware/efi/efivars/'* || sync</code>
 === Individual ===
@@ Line 115: / Line 127: @@
 <code>sudo wipefs --all --force '/dev/sda'</code>
-<code>sudo dd if='/dev/zero' of='/dev/sda' count='1024'</code>
+<code>sudo dd if='/dev/zero' of='/dev/sda' count='18096'</code>
 ==== sdb ====