Disk partitioning is the act of dividing a hard disk drive into multiple logical storage units referred to as partitions, to treat one physical disk drive as if it were multiple disks.
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Creating an ext4 partition fails with “invalid blocks count”
Environment:
- Virtual machine on VMWare ESX 4.0
- OS: fully up to date RHEL 5.8
After adding a new (virtual) disk I want to create an ext4 partition on LVM on this disk.
Steps taken so far:
$ sudo ...
2
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2answers
140 views
How do I backup everything?
What can I use to create a backup image of my entire system that will be saved on a LAN computer via SSH? If I break anything later, I want to be able to restore my entire system as it was before the ...
2
votes
3answers
251 views
Is it possible to overwrite your mounted OS partition with dd?
I was just wondering if I could run the following command on my mounted OS partition i.e. the one I booted from:
sudo dd if=/dev/zero of=/dev/sda bs=1M
I can't really experiment with this because ...
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3answers
2k views
Mount NTFS image file created using partimage
From an old disk which I don't have at hand, I have created a file named winxp.img using partimage. As the filename suggests, the partition contained Windows XP and was formatted with NTFS.
(The ...
5
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1answer
405 views
Partition not mounting from fstab
I have mounted a partition and add it to fstab file and then rebooted but I see that the partition is not mounted although it was added to fstab.
What is wrong, and how can I solve it?
fstab line:
...
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2answers
4k views
What are the ramifications of not having a valid partition table?
I recently upgraded my Ubuntu from 11.10 (Oneiric) to 12.04 (Precise Pangolin) on a Dell Inspiron B130 Laptop. When I run fdisk -l it says that my HD doesn't contain a valid partition table. I have ...
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1answer
97 views
Shared partition permission management
I am willing to try a dual boot arch/lmde setup on my laptop next week, but I've ran into a problem: I want to have a shared data storage where my downloads, documents etc would reside and could be ...
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1answer
134 views
Hidden ext4 partition?
Is there a way to hide an ext4 partition from e.g Thunar?
And the open file/save dialog , I think they come from the same source.
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1answer
35 views
Don't create partition schema in external devices
Is right to create a filesystem without to create a partition table in external devices non-boot?
I've created directly a filesystem into a memory card (SD) and it has been mounted automatically when ...
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2answers
10k views
Create partition aligned using parted
I'm partitioning a non-SSD hard disk with parted because I want a GPT partition table.
parted /dev/sda mklabel gpt
Now, I'm trying to create partitions correctly aligned so I use the next command ...
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1answer
147 views
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562 views
How to resize an LVM partition at the beginning
I have resized lvm partitions in the past, but after the resize there is space at the end of the partition. What I want to achive is to have the space at the beginning of the partition instead.
The ...
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1answer
138 views
do my advanced filesystem partitions have problems?
Recently one of my drive's went bad in my RAID, and I'm replacing with a new drive. I used this answer to mirror the partition on my old drive for resyncing. But I'm concerned about the output. My ...
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1answer
421 views
Partition mounted noexec even though not specified in /etc/fstab
I'm using Linux Mint 12. There I have several partitions which I auto-mount on startup. pysdm says that /dev/sda6 should permit execution of binaries. Also the /etc/fstab says it should.
/dev/sda7 ...
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4answers
609 views
Difference between bootable and non-bootable partitions
What is the difference between a bootable and non-bootable partition? I know that a user cannot boot a system from a partition marked non-bootable and can from one marked bootable.
I want to know ...
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4answers
2k views
Best Disk Partitioning Scheme for a Linux-based Developer Machine
Is there some kind of "best disk partitioning scheme" for a Linux-based web and application developer machine, in terms of performance, organization or others?
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3answers
607 views
Accidentally formatted Ubuntu partition to NTFS. Recover?
I accidentally formatted my Ubuntu partition in Windows 7 (quick format). Is there any way to recover the partition and data?
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2answers
610 views
Fdisk partition alignment, NAND, not showing specified heads
I ran fdisk with these options,
fdisk -H 32 -S 32 /dev/sdc
Then I made a new label, and created an aligned first partition.
Disk /dev/sdc: 7743 MB, 7743995904 bytes
32 heads, 32 sectors/track, ...
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2answers
531 views
Fresh Linux (Debian and CentOS) installation will not boot
I am trying to install either Debian or CentOS on a home server (Fujitsu PRIMERGY TX100 S3). I first tried installing Debian. The whole installation was successful (including grub). But after ...
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1answer
67 views
Location on disk to write a byte-flag?
I am writing an update utility for an embedded Linux device for which I am responsible.
I'm creating a basic side-by-side setup, where updates are applied to a staging partition and then the ...
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1answer
557 views
How to use ms-sys to restore MBR to boot /dev/sda2?
My brother screwed up a multi-OS install on his laptop and asked me to help fix it. I'm a basic linux user and I know my way around the terminal a little but beyond that I might need some hand-holding ...
0
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1answer
190 views
GParted is Frozen
I've been trying to allocate more space for Windows... And to do that, I have to resize my Linux partition partition.
So I booted up from my flash drive and started up gParted. Everything was ...
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votes
2answers
1k views
Accidentally deleted the partitions on my boot disk. The system is still running. How can I recover?
I just accidentally scrubbed all the partitions from the wrong disk.
/dev/sda is the boot disk, and /dev/sdb is a new disk I am trying to set up as a RAID mirror.
I accidentally fat-fingered it, ...
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2answers
409 views
Partitioning Ubuntu and Windows 7 once and for all
I am dual-booting Windows 7 and Ubuntu (installed with wubi). So far there have been no problems, but now it says the disk is out of space all the time (I think that is because /dev/loop0 is used 100% ...
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4answers
1k views
What is the concept of Drives in Unix Systems?
In windows, we have C drives where all the softwares are installed and other partitions e.g; D, E etc to store our data. Now once we reinstall the windows for some reason, we install everything again ...
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4answers
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Backup of LVM2 logical volume
I'd like to make backup on external drive of LVM2 logical volume in dd manner.
Approach I consider is to
make lv on extranl drive with identical size
copy with dd
(Please let me know if you see ...
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2answers
2k views
Partitioning for Web Servers
I was curious what some general best practices are in relation to partitioning for a new Linux VM that will be used as a web server? Are there certain guides that should be consulted or followed? ...
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1answer
79 views
What is the smallest LVM2 logical volume unit?
Could you ensure me that minimal LVM2 size Unit is one extent to which all sizes are rounded up ?
Is 4MiB the default size of extent for LVM2 ?
Can it be configurable or is it the only size ?
Small ...
6
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2answers
395 views
How to properly unplug/plug removable LVM2 device?
How to properly unplug (remove) and later plug (insert) removable (hot-plug, usb etc) storage device with LVM2 on it ?
I've found this note
Remove (unplug, eject):
lvchange -an ...
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3answers
6k views
How to salvage an unreadable usb flash drive
I have a 16GB USB flash drive that somehow got corrupted to the point in which even fdisk -l can't find it (I get a one-line error message saying: "Unable to open /dev/sdc")
However, it is being ...
2
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1answer
178 views
Why does the /boot partition get updated when I install software
Based on some recommendations I read online, on install of a new (Ubuntu) system, I made my /boot partition separate from / and small in size (only around 50 MB). It makes sense to me that you would ...
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2answers
162 views
Why is my /home separate from /?
I was confused why I was getting out of space errors so I ran df and saw this:
[me@fedlap /]$ df -h
Filesystem Size Used Avail Use% Mounted on
rootfs 43G ...
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3answers
343 views
Can I use FAT partition for /home?
I'm new to Debian. I've been using Ubuntu for almost 5 years now and I want to switch and use a different distro. I chose Debian.
I would like to know if is it possible store the home directory in a ...
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3answers
449 views
Copying an HDD to a larger one by dd
I'm trying to copy an entire HDD which has IBM PC-style partition table to a larger one by dd on GNU/Linux. The questions are:
Can I use the additional space on the larger disk by changing the ...
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1answer
422 views
Adding a populated existing disk device to a QEMU raw image
I have a raw QEMU image (vda.raw), and I would like to resize it and add an existing partition, using data I have in a file that contains a raw ext3 file system populated with data (vdb.raw). The two ...
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2answers
6k views
How extend linux partition with?(after success to extend : fail to boot computer)
I have Ubuntu and I want to enlarge the disk space of /dev/sda1 from 10GB to 90GB.
gparted Ubuntu 9.04 live cd show:
Partition File System Size
/dev/sda1 ext4 10GB
/dev/sda2 ...
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0answers
111 views
How Solaris sub-partitions can be accessed in FreeBSD?
First of all, Linux detects it okay:
sdg1: <solaris: [s0] sdg5 [s1] sdg6 [s2] sdg7 [s8] sdg8 >
But FreeBSD 9.0 does show only main partition. Possibly only Solaris labels for sparc64 is ...
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1answer
140 views
Making the transition to multiple hard drives with dual boot
Hi I'm looking for tip or things to watch out for, while I make the following changes to my system:
I currently have a dual boot setup on one hard drive (win7 and ubuntu), I am going to change to a ...
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2answers
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How to Expand LVM2 Partition in Fedora Linux
I've been using Fedora 15 on a VMWare virtual machine. Over time, the disk space I initially allocated for the file system began to run out, only 12GB left. I've expanded the disk space an extra 25GB.
...
2
votes
1answer
157 views
Writing Linux Kernel module for non-MSDOS disk labels/partition tables
Linux supports a set of different disk label or partition table formats. For example, Sun Disk Labels and MS-DOS partition tables are both disk labels that contain (largely) the same information ...
2
votes
1answer
293 views
How to extend an ext3 partition over LVM inside a file (virtual machine)?
I need to extend the root partition of a virtual machine (VM) using LVM (Logical Volume Manager) . I can afford a few minutes of downtime so a VM shutdown/reboot is fine.
The virtual hard disk is in ...
3
votes
1answer
530 views
Create iso image of ext3 type
I want to create an ISO image which can be mounted with an ext3 partition type. How can I do that?
I am using this command:
[root@manage upload]# dd if=testParti.txt of=./diskImage.iso
41+1 records ...
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2answers
145 views
Where does the -i option in sed store the lines matching a regex?
I am trying to release space in my server's hd so I'm matching old dates in a log file with sed and it is decreasing but my root partition is now using 98% percent of it's space instead of 91% it was ...
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1answer
115 views
# of reads/writes for LVM vs. “regular” partitioning?
I am going to be installing linux to a USB flash drive (an actual install, not a "live usb"). I need it to be completely portable, so I can't realistically have the high-access partitions (swap, var, ...
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1answer
922 views
Shrink a Linux guest .vdi in VirtualBox?
I've seen instructions for shrinking the .vdi image for a Windows guest machine in VirtualBox 4.1.8. However, it used a tool to write zeroes to free space in the .vdi (nullfile-1.02.exe) that is for ...
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2answers
425 views
Software raid + separate partitions?
I have setup software RAID1-arrays using two 250GB harddrives. There's two arrays - one named md0 in which the system is kept and the other, md1 works as swap:
# cat /proc/mdstat
md0 : active raid1 ...
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3answers
324 views
how to use “Unusable” sectors outside defined partition boundaries
What might be a convenient way to stash some hidden data in the "Unusable" area following the last partition, or anywhere outside defined partition boundaries? For example, making it appear as a ...
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3answers
4k views
How do I partition a USB drive so that it's bootable and has a Windows-compatible data storage partition?
split from here
I have a 16gb flash drive, which I want a live ISO to boot from (via unetbootin or something similar). It'll be some 32bit distro that I can plug-in and boot on whatever computer I ...
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1answer
177 views
Can a Linux install be moved from one computer to another?
split to here
I have a 16gb flash drive which I want to contain a portable Linux install. If I could just install Knoppix onto the flash drive, and have that work on any computer, I could do that. ...
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0answers
955 views
WD MyBook 3TB - Gparted failed & HDD partitions recovery?
I have this new WD MyBook external HDD (USB 3.0/2.0); I created 3 partitions all of them ext3 type (~1 TB | ~1 TB | ~750 GB)
I loaded lots of files all the partitions were like ~30% full on each, and ...
