Questions tagged [fdisk]

fdisk (for "fixed disk") is a command-line utility that provides disk partitioning functions.

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Unable to mount Full "md3" System Partition on CentOS Server, preventing Boot

I'm facing an issue with my server running CentOS. The system partition "md3" (raid1) is full due to a backup script error that failed to delete old data. As a result, my CentOS system has ...
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fdisk shows partitions type Linux and dos on the same partitions

I have created a partition on my disk like this: root@vps-90446fc7:~# fdisk /dev/sdb Welcome to fdisk (util-linux 2.37.2). Changes will remain in memory only, until you decide to write them. Be ...
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Are UUIDs and PTUUIDs important for MBR disks? If so, how do I create them on my own?

I'm studying partitioning under Linux, starting with sfdisk. If I copy a partition table from one drive to another, it'll copy the device UUID and the PTUUIDs for each partition, but if I'm creating a ...
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Cancelled ext4 shrink and now I can't seem to format the drive? parted, fdisk etc won't run with the drive

I was shrinking an ext4 partition, however it was taking too long so I thought I'd just start from scratch (making a new partition and wiping the data). However after I cancelled the resize (which was ...
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Problems after migrating drives to HBA-connected disk shelf

I had 4 drives (2x3TB, 1x4TB, 1x18TB) in USB SATA docks connected to my proliant server. I finally got my HBA to recognize my IBM disk array, and managed to get the drives recognized in Ubuntu server ...
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Regain full disk space after copying a small image file to a large USB device

I'm copying an image file (size: 2GB) to an USB disk on /dev/sda (size: 2TB) using dd: sudo dd if=2023-05-03-raspios-bullseye-arm64-lite.img of=/dev/sda bs=4M status=progress conv=fdatasync After dd, ...
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USB disk partitions disappeared, cannot mount

The USB partitions were deleted, only sdb remained. sdb1 does not exist. How do I partition the USB again? Now it shows up in the lsblk output, but I can't mount it. [xx@x ~]$ lsblk NAME MAJ:MIN RM ...
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resize partition overlapping parted

parted -s -a opt /dev/sda "print free" Modèle: VMware Virtual disk (scsi) Disque /dev/sda : 268GB Taille des secteurs (logiques/physiques): 512B/512B Table de partitions : gpt Disk Flags: ...
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No free sectors available shown by fdisk in centos 7 minimal

This is the output of fdisk /dev/sdb [root@localhost ~]# fdisk /dev/sdb Welcome to fdisk (util-linux 2.23.2). Changes will remain in memory only, until you decide to write them. Be careful before ...
achhainsan's user avatar
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Recovering accidentally deleted partition on a solid-state drive using "fdisk"

As far as I know, a solid-state drive (SSD) stores data in different locations that the operating system cannot control. If I accidentally delete a partition, and then enter the exact start and end ...
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New USB stick freezes processes that come in contact with it (dd, fdisk, gparted, etc)

I bought a new USB stick to upgrade my os (debian) on my laptop. I used gnome-multi-writer to write the .iso file into the device. The writing process never showed a message of success or error so I ...
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Recover data from deleted (still intact) raid 5

So through a shell script gone sideways I accidentally deleted my mdadm raid5 (3 HDDs) and the partitions from the disks (so disks still connected according to lsblk as {sdb|sdc|sdd}). I have not ...
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Why does free space differ when shown by fdisk and df?

Basically title. I'm running MX Linux from a 32GB live USB. When I run fdisk -l, I see the following: [...] Disk /dev/sda: 29.88 GiB, 32080200192 bytes, 62656641 sectors Disk model: Flash Drive ...
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fdisk command is not listing the required commands like 'a'

I am new to the Linux environment and using the Pop!_OS Distro. I was using fdisk to create partitions on an SD card, sudo fdisk /dev/sda But when I pressed 'a' to set the bootable flag on the 1st ...
Joe Race's user avatar
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Move disk space from /dev/sda3 to /dev/sda4

This is my current setup: Disk /dev/sda: 546.8 GiB, 587127480320 bytes, 1146733360 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/...
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No bootable devices found for Fedora

As a word of caution: I am inexperienced and moved some partitions around when attempting to dual boot windows from Fedora, I didn't take note of what I was doing and so only have my current ...
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Increasing Volume Group Size without new Disk

On my server (RHEL8) running on vCenter, I have a Volume Group that consists of 1 Disk. I want to increase the Volume Group size without adding a secondary virtual Disk in vCenter. Old Disk size: 50 ...
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Disk Usage Analyzer Shows 100% After Expanding VMWare Hard Disk

I expanded my Hard Disk on my VMWare for this machine to 80GB, installed GParted and expanded the partition. But Disk Analyzer is still showing 100% usage. When I run fdisk -l the output is: Disk /...
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Re-allocate space on Centos7 RAID-1 volume from one mount to another

We have a set of Centos7 machines that were configured with 100GB /tmp and 400GB /scratch partitions. The tools we're using are consuming more /tmp space than anticipated so we need to re-allocate ...
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fdisk vs. vgdisplay - increase size of VG

After getting error messages that I was running out of disk space, I looked at the disks and found that the output from fdisk (127.101 GiB) did not coincide with the output from vgdisplay (57.43 GiB). ...
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How to mount a sparsed disk image

I have an image of the mSATA SSD disk of a PC. The disk contains the operating system and has a capacity of 512GB. I do not have that free storage, so I have cloned the disk into an image with dd ...
Fco Javier Balón's user avatar
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Increase size of a volume group

I have a 16GB msata but my rootfs is only 4GB. I need to increase the size of a volume group /dev/mapper/vg-var/ for my embedded system to full capacity. $ lsblk NAME MAJ:MIN RM SIZE RO ...
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Can you safely delete MMC Boot Partitions?

From what I understand MMC Boot Partitions are present on the hard drive and can be deleted as normal partitions. Is this correct? If so, how do I do it? Here is the list of drives shown by fdisk -l: /...
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revert logical partitions to original disk

I have a disk that somehow split into what appear to be logical partitions, but I am unsure. How to revert to the original disk? Here is the list of drives shown by fdisk -l: /dev/mmcblk0 /dev/...
colossalchicken's user avatar
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Use free space to make a new filesystem

How would I go about using 50G of the free space from vg_root to make a new filesystem and then use that for /home nifle@rhel8box3 ~ $ sudo lsblk [sudo] password for nifle: NAME MAJ:MIN ...
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Problems after creating mdadm RAID-1: disk identifier 0x00000000 and same serial number on both disks

I need your help with a problem that I’ve been trying to solve for days now.  I recently purchased a Western Digital (WD) My Book Duo, and after setting it to make it work as two independent disks I ...
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fdisk reports partitions are misaligned even when they don't appear to be

I have a new 4 TB Western Digital SN850X NVMe SSD drive that I am trying to partition as a boot drive for Ubuntu 20.04. No matter what I do, fdisk reports that the partitions are misaligned, even ...
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SD card shows up in dmesg, lsusb, and lswh, but not in lsblk or fdisk

Recently, my Android device has been unable to detect my SD card so I connected it to my PC (running Kubuntu) to figure out what's wrong. These are the results: dmesg correctly detects the card reader ...
Firewolf1024's user avatar
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keep getting bad usage while trying to perform a partitioning and Formatting a Disk Drive in Linux

Disklabel type: gpt Disk identifier: 6C5A63BF-EF32-9244-8273-250775DB79D6 Device Start End Sectors Size Type /dev/sdb1 8704000 18874476 10170477 4.9G Linux filesystem /dev/sdb2 20480 ...
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How do I find out what is the hard disk for OS in Linux

in our bash scripts , we have many places in the code that need to capture only the disk that related to OS ( operation linux/RHEL system ) we are using Linux versions as 7.2/7.5/7.6/7.9 , and on most ...
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Looking for a way to correct Hard Drive geometry. # of cylinders is not correct

I have 2 hard drives that have become corrupted as in the # of cylinders is no longer correct. Not sure how this is happening, but have same hard drive model that I have verified the correct # of ...
Ronnie_g's user avatar
1 vote
1 answer
656 views

bash + how to automate creation of disk partitions in Linux

here is example from our rhel server machine lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sdb 8:16 0 20G 0 disk /data/sdb sdc 8:32 0 20G 0 ...
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Trouble understanding file partitions

I am trying to run fdisk on /dev/sda and create a new partition on /dev/sda3. I am not understanding what to do if no free sectors are available. I looked online and found different solutions and I am ...
Rogelio Cordova's user avatar
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How to boot from new partition after do dd

I have 10 partition. My root (/) partition located on /dev/sda9 and my home (/home) partition located on /dev/sda2. I want to move my root partition (/dev/sda9) to /dev/sda5. So I copy my root ...
SannUlya's user avatar
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Reclaim space on volume for bootable partition

I have a volume on Centos 8 that has 10G to spare: $ lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT nvme1n1 259:0 0 80G 0 disk └─nvme1n1p1 259:1 0 80G 0 part /db nvme0n1 259:2 ...
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Debian - Create new partition with fdisk and set size ( Last sector )

please could someone help me with my problem of create new disk partition in Debian ? I'am using Proxmox where I have created a few virtual machines. On one of virtual machines where have installed ...
Filip Skřivánek's user avatar
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How do I utilize entire OpenWRT SD Card for the installation?

I am trying to increase the size of my openwrt installation to take advantage of the entire SD card for more packages, but I am unsure where to start. I have tried following some other online guides ...
Jacob Miller's user avatar
1 vote
1 answer
290 views

Help with (corrupted?) flash drive

When I plugged in my “old” flash drive to my Windows desktop, it seemed that Windows 10 was unable to read the data on that USB stick. I checked W10's disk management and the drive's filesystem is “...
juoum's user avatar
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Cannot format a MicroSD card

I have a SanDisk Ultra Plus 64gb MicroSd XC Card that I used to run ubuntu server on a raspbery PI. Now I have to format this card but I can not succes. I've tried many things including: Formating ...
Sera's user avatar
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Moving space from swap to /

I have a 4GB sd card but what i'd like to be able to do is have more free space on the / partition I don't actually need a swap partition either so how would i resize/move partitions for example using ...
Lurch's user avatar
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fdisk or sfdisk + how to show the disks size in GIB and not in GB

we can print all disks by the following ( on our RHEL machine ) fdisk -lu | grep "Disk /dev" Disk /dev/sda: 247.0 GB, 246960619520 bytes, 482344960 sectors Disk /dev/sdb: 4294 MB, 4294967296 ...
yael's user avatar
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How to find deleted partition

I have some partition table with three partitions. I deleted the third partition with fdisk and next I created new partition on the same place with the same "first and last sectors". How can ...
Alexander's user avatar
1 vote
1 answer
615 views

Backup created with rsync takes up more space on external drive than on source

I am using rsync to make a backup of Ubuntu running on a Raspberry Pi. I exclude all the usual directories whose contents are only created after boot up anyway. The rsync writes to a backup image that ...
FlexMcMurphy's user avatar
1 vote
3 answers
1k views

Can't write SD card partition table

I can't write the partition table on an SD card. IOCTL error. I can't delete it, either, neither in Linux using parted, cfdisk, or fdisk, nor in Windows, which just says format didn't work. The ...
wirelessben's user avatar
7 votes
2 answers
2k views

How do I tell which partition I booted from?

Is there a way to know which partition you actually booted from? fdisk -l reveals a "Boot" column that I definitely don't have on my NVME. Is this just legacy information? Device Boot ...
celvro's user avatar
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USB Drive sometimes changes the Drive name

I have two USB Drives, I created partitions, and formatted it to ext4. Running fdisk -l shows that I have /dev/sda1 and /dev/sdb1 Device Boot Start End Sectors Size Id Type /dev/sda1 /dev/...
Greg's user avatar
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Size discrepancy between df -h output and lsblk output [duplicate]

When I run df -h and lsblk, on my Ubuntu 20.04.3 LTS Oracle Cloud instance, there is a discrepancy between sizes of my /dev/sda1 mount. I am not sure if this has to do with GiB vs GB or something else....
Rob's user avatar
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Fdisk Ubuntu - How to create logical drives inside an extended partition

I have 3 partitions as you can see below, 2 Linux type partitions and 1 Extended partition. I need to create 3 logical drives (sized 200M, 300M, 400M) inside of partition /dev/sdb3. When I try to ...
farooq GV's user avatar
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160 views

ubuntu 20 volume group disk space extend problem

I cannot expand the disk of a server with an ubuntu 20 operating system on xen virtualization. I have already updated the 250gb disk space to 265gb, but whatever I do on the command screen, the free ...
Ens's user avatar
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Mounting a bad raw disk image without fixing it?

Is it possible to mount a bad disk image without fixing it? Here's the story why. I was playing around with dd, and I accidentally wrote back a 20GB virtual disk image onto the disk itself. The old ...
itarill's user avatar
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