wipefs

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Old signatures confuse tools: mkfs refuses, LVM sees an old PV, the installer shows old RAID members. wipefs DEVICE lists the signatures; wipefs -a DEVICE removes them. Only the few bytes of the signatures are erased, so it is very fast — but the old data is not securely deleted.

طريقة الكتابة

wipefs [OPTION]... DEVICE...

الخيارات 14

الأكثر استخدامًا

-a, --all: Remove all signatures.
-n, --no-act: Do everything except writing (test).
-b, --backup[=DIR]: Save each removed signature to a file first.
-o, --offset OFFSET: Remove only the signature at this offset.
-t, --types LIST: Only these types, like xfs,ext4 (no = exclude).
-f, --force: Also on mounted or busy devices (dangerous).
-q, --quiet: Less output.
-i, --noheadings: No header line.
-J, --json: JSON output.
-O, --output LIST: Choose columns.
-p, --parsable: Parsable output.
--lock[=MODE]: Lock the device.
-h, --help: Show help.
-V, --version: Show the version.

أمثلة 10

$ مستخدم عادي# بصلاحية root (أو مع sudo)

1List the signatures

#wipefs /dev/vdb
DEVICE OFFSET        TYPE UUID LABEL
vdb    0x200         gpt
vdb    0x27ffffe00   gpt
vdb    0x1fe         PMBR

GPT has a backup at the end of the disk.

2Remove all signatures of a disk
```
#wipefs -a /dev/vdb
```
The disk now looks empty for every tool.
3Test first
```
#wipefs -n -a /dev/vdb
```
Shows what would be removed.
4Keep a backup of the signatures
```
#wipefs -a -b /dev/vdb1
```
Files like ~/wipefs-vdb1-0x00000000.bak can restore it with dd.
5Remove only one type
```
#wipefs -a -t xfs /dev/vdb1
```
Other signatures stay.
6Partitions first, then the disk
```
#wipefs -a /dev/vdb[0-9]*; wipefs -a /dev/vdb
```
Clean reuse of an old disk.
7Before a new LVM PV
```
#wipefs -a /dev/vdc; pvcreate /dev/vdc
```
pvcreate refuses disks with old signatures.
8JSON for automation
```
#wipefs -J /dev/vdb
```
Check disks in scripts.
9After wipefs: really empty?
```
$lsblk -f /dev/vdb
```
No FSTYPE, no partitions.
10Secure wipe needs more (security)
```
#blkdiscard /dev/nvme0n1
```
wipefs leaves the data; use blkdiscard (SSD) or a full overwrite to destroy data.

رموز الخروج

`0`	Done.
`1`	Error.

`wipefs`

ماذا يفعل

طريقة الكتابة

الخيارات 14

أمثلة 10

1List the signatures

2Remove all signatures of a disk

3Test first

4Keep a backup of the signatures

5Remove only one type

6Partitions first, then the disk

7Before a new LVM PV

8JSON for automation

9After wipefs: really empty?

10Secure wipe needs more (security)

رموز الخروج

الدليل الكامل

ماذا يفعل

طريقة الكتابة

الخيارات 14

أمثلة 10

1List the signatures

2Remove all signatures of a disk

3Test first

4Keep a backup of the signatures

5Remove only one type

6Partitions first, then the disk

7Before a new LVM PV

8JSON for automation

9After wipefs: really empty?

10Secure wipe needs more (security)

رموز الخروج

أوامر مرتبطة

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الدليل الكامل

`wipefs`