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20 views

Discovering possible RAID configuration of a bunch of disks

I have a stack of 8 disks which were at one point all inside of one host. That host no longer exists, but it's been requested that I retrieve data from these disks. No one can tell me anything about ...
1
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2answers
43 views

How to format a 1GB USB stick to FAT32 with 512 bytes sector?

I am trying hard to format a 1GB USB stick so that I can use it to install a new linux OS. Because the Disk utility has failed me when creating the file system. I tried to do it manually using fdisk ...
2
votes
1answer
70 views

Partition offset at 63 or 64?

I did not wish to use the entire SSD for OpenBSD 5.5. (The SSD is new and pre-formatted with MSDOS using Gparted) During installation and at the fdisk stage, I chose Partition #: 0 to install OpenBSD ...
0
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2answers
36 views

change boot order

I have 2 partitions sda1 XP and sda2 CENTOS. I have reinstalled grub on /dev/sda but on rebooting, I experienced: error : 22 no such parition for Centos; while Windows boots charmingly on the other. ...
2
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1answer
45 views

Debian Wheezy live - gparted, dmsg, fdisk etc. do not detect local hard drive but it is shown during installation

Yesterday I finished backing up my data and it was time to wipe that HDD of mine for good and freshly install Debian Wheezy stable with Xfce as a WM. I've booted into a live session to see if things ...
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4answers
85 views

Extracting a string from fdisk command

I want to write a shell script, which will run fdisk -l and extract a string /dev/sdbn from the output of fdisk -l. Using extracted word I want to mount it to /mnt. For Example: Disk identifier: ...
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0answers
68 views

How to find hidden partition of a USB in linux

I have a USB, which has a protected partition. I think this USB has hidden partitions, which I can't see them. $ fdisk -l /dev/sdb: You must set cylinders. You can do this from the extra functions ...
2
votes
1answer
46 views

why 2TB external HDD is recognized as 800 GB only in Ubuntu 8.10

I had a 2 TB external HDD which I formatted as below. fdisk /dev/sdb After issuing the above command, I did the following steps. Then selected option p. (To print the partition table). Then ...
4
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4answers
113 views

Combine fdisk and df in the same output

sudo fdisk -l gives : 255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size ...
-1
votes
1answer
22 views

Fdisk expert mode not available

It seems that the eXpert mode in fdisk is no longer available. When I try sudo fdisk -x, terminal returns "fdisk: invalid option -- 'x'" I have fdisk from util-linux 2.24.1 Is this a "feature"?
4
votes
1answer
695 views

Problem mounting GPT disk partition

I am trying to mount a partition on a GPT disk, but I get the following error: $ sudo mount -t ext4 /dev/sda1 disk/ mount: special device /dev/sda1 does not exist Looking at dmesg, I don't see any ...
1
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1answer
114 views

Problem creating raw disk image and mounting it in rescue mode to QEMU

I am trying to create booting system from raw disk image. This is what I do: $ dd if=/dev/zero of=system2.img bs=1M count=6000 6000+0 records in 6000+0 records out 6291456000 bytes (6.3 GB) copied, ...
0
votes
1answer
96 views

location of the “disk identifier”

According to Wikipedia, "disk signature" is a 32 bit value stored in MBR on bytes 440 - 443. According to fdisk, my "disk identifier" is 00043afc in hex: # fdisk -lu /dev/sda | grep identi Disk ...
0
votes
2answers
156 views

“blocks” column in output of fdisk

On my machine, fdisk -lu /dev/sda displays following output: Device Boot Start End Blocks Id System /dev/sda1 * 2048 73947135 36972544 83 Linux /dev/sda2 ...
3
votes
1answer
497 views

How do I use new fdisk table without reboot (kpartx)?

When I run fdisk and change the size of a partition, fdisk says at the end of its output: The new table will be used at the next reboot or after you run partprobe(8) or kpartx(8) I'd like to do so ...
3
votes
2answers
53 views

Difference between running mke2fs and setting FS type in cfdisk?

When I run cfdisk (or fdisk) to partition a storage device, there's a point where I can specify the file system type. Does this do anything with respect to the actual file system? Suppose I want to ...
0
votes
1answer
300 views

Fdisk cannot read size of this disk is 4.0 TB under RAID-0 enviroment

I have server from OVH data center , I have Two SATA Hard Disk Drive , each Disk Size 2.0 T.B , I have RAID controller card but I convert the RAID-1 to RAID-0 through OVH Rescue mode and here is the ...
2
votes
1answer
411 views

Software RAID 10 + LVM on mixed drives, sector alignment?

I have 4 2.5" 7.2k drives lying about and I'd like to build some RAID arrays for a bit of VM storage on my KVM lab box. There are 2x 320GB drives and 2x 500GB drives. I'm looking to create a RAID 10 ...
3
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2answers
2k views

fdisk -l shows ext3 file system as HPFS/NTFS

I have an external HDD which I formatted as NTFS partition in Windows. Now, I formatted this HDD in my linux system using the below command. mkfs.ext3 /dev/sdb1 It was formatted successfully. ...
1
vote
1answer
144 views

Can't create partition table on SSD with Slackware 14

I'm trying to install Slackware 14 from a DVD. It boots fine from the DVD. When I try to use fdisk or cfdisk to create the Linux and swap partitions on the SSD, it complains about a missing or ...
1
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2answers
493 views

fdisk (expert mode) options

On GNU/Linux with fdisk (util-linux 2.20.1), when using, say fdisk /dev/sda3 there are quite some options and the and even an "expert mode" (x). Most of these are explained through the m option. But ...
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1answer
894 views

Copy MBR and boot partition to a smaller disk

I'm using a 32GB SD card for my raspberry pi. I have successfully transferred the operating system (Archlinux ARM) to a usb harddrive. Which means that I only need the boot partition on the SD card. ...
1
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1answer
45 views

Are partition tables always required? [duplicate]

So I have a home server with 4 hdds: hdd1: 60Gb (SSD - OS drive) hdd2: 4TB (data drive) hdd3: 2TB (data drive) hdd4: 1TB (data drive) So I intend installing ubuntu server onto hdd1 (ssd ...
0
votes
1answer
238 views

How to check integrity to HDD with UDF format

I'm having problem with a USB external drive, which seem to be formated with UDF and was being used for MAC and Windows (or at least that is what told). When I attached the HDD to my Linux system ...
3
votes
1answer
417 views

How can I Allocate More Space to a Filesystem Mounted on /?

I am new to Linux so please forgive the incorrect use of vocabulary. My company has a private cloud that provisions VM's in a KVM. I received a RHEL 6.4. When I provisioned it, I asked for 50GB of ...
5
votes
1answer
105 views

Partitions same size but different block [closed]

I tried to backup my partition using dd on another disk and I created a partition of the same size. When I finished the copy I had problems mounting the partition since I got bad geometry: block ...
6
votes
4answers
282 views

Listing all devices as non-superuser

I'm trying to mount external hard drive. As I know, to mount manually, I should use fdisk -l to determine which device refers to the drive. When I'm doing so without sudo I have next output: ...
2
votes
1answer
167 views

why the size of disk image decreased after mkfs.ext2

first, i create a disk image use dd: > dd if=/dev/zero of=disk bs=512 count=2097152 > du -h disk 1.1G disk second, fdisk disk create a partion: Command (m for help): p Disk disk: 1 ...
6
votes
3answers
2k views

fdisk vs parted

I've been running a small media server at home for 10+ years and looking at replacing it (before it breaks). I intend to hook up a new drive to my old system, partition and format (ext4 seems most ...
2
votes
1answer
189 views

Linux big disk partition issue

I have a big disk around 4.8 TB (RAID) and it has following partition (created by fdisk) [root@server1 ~]# fdisk -l /dev/sde WARNING: The size of this disk is 4.8 TB (4796404727808 bytes). DOS ...
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0answers
173 views

How to mount a flushed hard disk in Xubuntu

I want to recover data from an internal hard disk with Windows Vista. I`m using a live CD of Xubuntu. But when I write: sudo fdisk -l I obtain only the USB disk in which I have Xubuntu live. How ...
1
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1answer
146 views

Specify partition data in sfdisk and parted

With this line: (echo o; echo n; echo p; echo 1; echo ; echo +24G; echo a; echo t; echo 7; echo w) | fdisk /dev/sda I can create a new active primary partition for NTFS, 24 Giga large. The syntax ...
2
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2answers
3k views

Format windows (NTFS) hard drive on Ubuntu using command line

This is really a two part question. I've never formatted a hard dirve on Linux/Unix, so please bear with me. I had an old Windows machine which recently died. So I decided to put the hard drive into ...
1
vote
1answer
152 views

“df -h” and “fdisk -l” in amazon server [closed]

When you do a df -h you can see: Filesystem Size Used Avail Use% Mounted on /dev/xvda1 7 . 9G 1.7G 6.2G 22% / But, when you do fdisk -l you see: Disk /dev/xvda1: 26.8 GB, 26843545600 bytes 255 ...
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3answers
266 views

What's the difference between fdisk -l and df -h?

In my ubuntu system, I want to have a look about my system disk info. When I use fdisk -l without sudo, I get nothing. But with sudo fdisk -l, I only get a device /dev/sda1, but when I use df -h, I ...
1
vote
1answer
881 views

Linux EMC scan Lun not working

We have CX4-120 EMC SAN storage, I expend existing LUN size to 20GB but now i am not able to see any cylinder changes on host fdisk -l output. Following command i am running to re-scan my hda or LUN ...
4
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2answers
854 views

Programmatically partition disk

I am attempting to create a bash script which will create a new partition with a file system on a disk with existing partition(s). It looks like it's easy to create partitions programmatically with ...
0
votes
3answers
348 views

Align Partition Of HDD Using fdisk?

I first asked this question on SuperUser.com but got no responses. I have found how to align the partition of my SSD using fdisk (SSD article on Gentoo Wiki) but haven't been able to find any ...
3
votes
1answer
3k views

Understanding partition table with sda1 sda2 sda5

I just inherited a system and I am trying to understand it's partition table for the hard drive. (I'm new to this) machine:~# fdisk -l /dev/sda Disk /dev/sda: 250.0 GB, 250000000000 bytes 255 heads, ...
2
votes
0answers
82 views

Problems with USB goflex 2 TB

I am using CentOS 5.5 and have been using cpio to write backups to a 2 TB GoFlex USB drive. This drive worked great for over a year, but am now running into a problem and not sure what to do. When ...
1
vote
1answer
2k views

pvcreate error on partition

I can't create this partition, I'm getting this error shown below: Device /dev/mapper/vg_paperino-lv_rootp1 not found (or ignored by filtering) Below are the steps that I'm doing on CentOS: ...
7
votes
4answers
297 views

Protecting Devices from dd and fdisk Commands

I'm wondering if there is some way to prevent certain certain devices from becoming the output file of the dd command and the target of the fdisk command. I'm currently using the two operations to set ...
1
vote
1answer
237 views

restore filesystem after fdisk

I split a partition in two with fdisk, but after rebooting I've got partition in FAT filesystem (was ext4). What's can be wrong? And how to fix it or get data from bad partition? I hope this is ...
1
vote
1answer
319 views

How to realign a disk on logical volume with minimum to zero down time

A system running un-align disk partition that needs to be aligned without loss of data on all the partition including mbr with the minimum to no down time.
2
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1answer
84 views

fdisk. What does the “free” partition mean?

I had two primary partitions (/dev/sda1 and /dev/sda2). Then I created an extended partition to segment it into logical partitions. After I had typed fdisk /dev/sda and n (add a new partition) the ...
2
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1answer
405 views

fdisk, dd, and the Rapsberry pi

I was trying to wipe my 4GB SD card which acts as the hard drive for the Raspberry Pi, so I went into Mac OS X Disk Utility* and Erased the entire disk, and specified that the whole disk be one big ...
0
votes
2answers
4k views

CentOS doesn't see USB device

I'm running CentOS 6.3 inside of VirtualBox and am having trouble seeing my USB 2.0 thumb drive. In VirtualBox I go to Devices, USB drives and can capture my connected thumb drive. I've created a ...
3
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1answer
760 views

Remount lvm partitions after OS reinstallation

I recently upgraded to Linux Mint from Ubuntu. I have overwritten /dev/sda2 which had Ubuntu. I had earlier created two logical volumes opt and virtualization from /dev/sda1. I forgot to take the lvm ...
2
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0answers
343 views

Disable RAID auto detect at runtime

In Linux, I'm partitioning two disks for RAID1 with fdisk. The first disk partitioning succedes, but the second fail because the raid starts automatically and occupy also the second disk (why? it ...
4
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2answers
592 views

How do I make use of unused space on my boot drive on FreeBSD

I have an old FreeBSD Server (running 7.3-RELEASE) that desperately needs additional storage. In fact, it has some-- the original 20G SCSI drives have been replaced by 300G SCSI drives, so in theory ...