The ext4 or fourth extended filesystem is a journaling file system for Linux, developed as the successor to ext3.

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I accidentally formatted the wrong volume - is it possible to restore the old Ext4 Filesystem?

I just formatted the wrong volume - is it possible to restore the old ext4 partion? Of course that happened after deleting the old backup - great.
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Files tranfered from ubuntu to an external NTFS hdd are UNREADABLE in Windows. Why?

Transfered files from Ubuntu-ext4 to NTFS HDD are UNREADABLE in Windows. I have transfered files from ext4 Ubuntu hdd[my notebook] to an external NTFS HDD used in windows[a workstation]. Before i ...
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20 views

Got a corrupt BTRFS partition, but is still usable, how to convert it to ext4? [duplicate]

I've got a corrupt btrfs partition, and also because of its low speed, I am thinking of 'converting' it to ext4, how can I convert a root partition from btrfs to ext4 without loosing the ability to ...
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39 views

Ubuntu 12.04 ext4-fs error/inode

I am running a Dell PowerEdge T420 with Ubuntu 12.04 32bit. The hard drives are a RAID1 setup. Last week, I began getting errors that cause the build I am running to fail. I found this in the log ...
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18 views

dd'ed the first 200MB of a HDD, is the filesystem recoverable?

In a moment of stupidity I let a script run dd on one of my (non backed up :() HDD's, 3TB in size. It had a single ext4 filesystem on it, which now won't mount. Things I've done so far (without ...
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21 views

Hardware RAID1 - ext4 errors won't go away with fsck

Short summary: yesterday my server's root drive (RAID1, 2 identical drives mirrored) was kicked into read-only. Trying to reboot I saw superblock errors, so I boot into Live-CD and fsck the drive. It ...
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2answers
121 views

Gparted merge unallocated space to ext4 partition

Here I want to merge unallocated space to ext4 partition. But during running in Ubuntu it is not allowed. Am I right? It has key picture. I must do that Ubuntu DVD booting from it and selecting try ...
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35 views

Ubuntu 12.04.4 ext4 filesystem, excessive overhead

I'm experiencing a baffling problem with two 12.04.4 servers I've just installed - there is what appears to be excessive file system overhead for anything I save on its folders; for example, a single ...
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161 views

Partition Scheme Questions in Dual Boot Ubuntu/Windows installation

I just got a new laptop with Windows 8 and I am ready to install Ubuntu. I see the hard drive already has quite a few partitions, most of which seem related to Windows recovery. See capture: I am ...
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26 views

wrong file system type passed to fsck

My Ubuntu hanged today while it was downloading, as it was unresponsive for long i shut it down forcefully . Later when i switched it on, it was not coming up so i used a live cd to fix the file ...
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1answer
68 views

Value too large for defined data type

I need to burn a ISO (3.3GB in size) using Brasero using my Ubuntu machine, however when I try to do it which the ISO is saved in my Portable USB Drive with NTFS file system, Ubuntu 64-bit says: ...
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1answer
137 views

HDD data recovery from a formatted ext4 into fat32

I'm new to ubuntu but it didn't took me long to realize that it's way better than privative options. I've got it installed on a desktop PC and I also wanted to install it in a laptop which is not mine ...
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1answer
23 views

Can I create another partition on a single partition system?

I have a system running Ubuntu 13.10 in a single partition. I need to create another ext4 partition, is it possible without reinstalling Ubuntu? Please show me the procedure, if it is possible.
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1answer
34 views

EXT4 Partition Lost?

Booted up from live media (ubuntu 12.04) with HDD (3TB, GUID, single EXT4 partition used for storing data and nothing else)connected via SATA. For some reason the file system was only allowing "read ...
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2answers
77 views

How to extend ext4 with gparted?

I am having short in disk space in my ubuntu /dev/sda6 and i have 11.08 GB of free space unallocated in the sense.I have followed different article about the repartition but they are not working here ...
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1answer
63 views

Is it safe to disable resize_inode on ext4 FS?

I have 2TB spanned LVM ext4 volume which contains large and mostly static files. With "static" I mean they usualy don't change in time. The volume is 99% full, and adding new files becomes very slow ...
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1answer
51 views

Why is there a size discrepancy between HFS+ and ext4?

I recently set up an NFS server on my Ubuntu server and I'm currently in the process of migrating my files from HFS+ HDDs to ext4. I've run into a problem however where the receiving disk (ext4 ...
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17 views

How to online resize the root partition? (ext4) [duplicate]

i've got a 1tb harddisk with 3 partitons: fat32 /boot/efi ext4 / linux-swap My ext4 partition has 700 GiB free so i would like to use some of that space (like 200 gib) for a Windows 8 partition. ...
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1answer
242 views

Formatting a USB flash drive as ext4

I'm making a custom bootable USB flash drive with a persistent partition. Formatting the partition as ext2 obviously makes the filesystem very sensitive to improper unmounting. I remember a while back ...
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1answer
258 views

Can't mount HDD /wrong fs type, bad superblock

I have browsed the many other questions related to my question, there seems to be many solutions for others, but not for me, when I try to mount my HDD using: sudo mount /dev/sdd ...
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110 views

My portable HDD cannot be mounted into filesystem — can't read superblock

I have a Seagate portable hdd 1 TB formatted fat32. Now I had no problems at the very beginning, but now I am getting the following error: Error mounting /dev/sdb1 at /media/zorobabel/EFI: ...
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Problem creating ext4 partition

I can format partition to linux-swap and ntfs, but can't for ext4. I did boot on a ubuntu usbkey in "try ubuntu" mode. /dev/sda1 was unmounted Here is gparted reports : GParted 0.11.0 ...
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19 views

How a tmp folder set on a mounted folder from another ntfs drive does can report free space from that drive to Audacity?

I have set the tmp folder for Audacity on a mounted folder from a target ntfs drive. But I've seen that Audacity does not see the free space from that ntfs drive but instead the free space from the ...
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1answer
89 views

Writes occurring to fresh ext4 partition every second endlessly. Cause and solution?

I've an external 500GB HDD connected to my Laptop which runs Ubuntu 12.04. I've formatted the external drive with one ext4 partition which spans the entire disk. My problem is that the disk makes ...
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127 views

How to expand the ext4 partition of virtualized Ubuntu running on top of CentOS/QEMU?

My company is running Xen--VMs run on top of CentOS/QEMU. Recently a customer using virtualized Ubuntu asked that his HDD space be increased. Now, with Windows, this is a joke. You type the new size ...
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476 views

Can't solve: ext4 file system creation failure Ubuntu 12.04

This seems to have been covered a lot before, but none of the solutions seem to help. It's the usual getting this error message while installing. The ext4 file system creation in partition #1 of ...
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44 views

Moving free space from C drive(NTFS) to G Drive(ext4)

I am totally new to Ubuntu. I have installed Ubuntu 13.1 with 5Gb space in Drive G but now I cleaned windows on C drive and want to move free space from C drive to G drive. Pls help me with the ...
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19 views

How do I format an usb to ext4 to use it on Ubuntu without without sudo permisions? [duplicate]

I use Ubuntu in a machine I own and in a machine I only have standard user permissions ( not admin). Is there any way to format a usb to ext4 and make it work (file ownership problems) if I cannot run ...
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1answer
122 views

How do I get the source code for just the ext4 file system on a Windows machine?

I'd like to get the source of the just the ext4 file system, but from on a Windows machine. At the moment I've navigated to http://archive.ubuntu.com/ubuntu/dists/saucy/, but everything I've found ...
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1answer
191 views

Mount point for multiple ext4 partition

I can't find any related question and answer that will satisfy me on my quest. All I see that people telling to create a ext partition with mount point '/' and a swap space. But I want to create ...
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1answer
225 views

How do I create and tune an ext4 partition from the command-line?

PARTITIONING (e.g. fdisk) What are some useful commands used for partitioning an additional hard drive from the command-line? Since most published guides steer towards GParted and other graphical ...
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Recover from a corrupted filesystem when fsck do not help

Something went wrong with my filesystem, Ubuntu set it to read-only and now under Ubuntu Live Disc, fsck can't fix it. I'm running 13.04 and it won't boot - at startup, it just shows the grub rescue ...
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57 views

How can I apply additional boot parameters? (using LiveCD) [duplicate]

I'm having the same issue as Franz here: Can not install Ubuntu (13.04 / 12.04) due to ext4 error Cubiq advises adding pci=noaer,nomsi to the "boot string" and Franz comments that this piece of ...
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1answer
27 views

Why do I keep getting an error when I try to resize ext4 under extended?

I had already assigned unallocated space to my extended partition and now i want to enlarge my ext4 partition. The problem is, it starts and when its almost finished, it gives me an error and makes me ...
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195 views

mounting external hard drive EXT4: “the unlocked device does not have a reckognizable filesystem on it”?

I'm having problems mounting ext4 partitions(inside a LUKS partition) in external drives. The drives are fine, there is no problem whatsoever with the drives and no filesystem corruption. This ...
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1answer
298 views

mkfs.ext4 parameters

I have a question about the ext4 filesystem and in specific about the tool mkfs.ext4. mkfs.ext4 -j -O extent <device> What does -j really do? In the manual it says that it creates an ext3 - ...
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1answer
164 views

snapshot of certain user home directory every 12 hours

I have a build server that builds our comnay product in a continuous build method. the build user is called build (surprise ,surprise, i know :-) ) and most of the data that it uses is simply taken ...
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348 views

Mount external ext4 with changed uid and gid

I'm trying to share a single external hard-drive between two ubuntu different machines. The problem is, my user uid and gids are different across the two machines. Is there a mount option for ext4 or ...
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198 views

Copy VirtualBox image files from Mac OSX to Ubuntu using USB

I created a VirtualBox image on Mac OSX 10.9. I need to copy the files to a USB drive, in order to distribute it to Ubuntu computers. I tried it with USB drive formatted on Mac with HFS+ filesystem. ...
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1answer
37 views

Hotkey to start sync or flushing memory

I'm asking a question in a very strange manner, i'm sorry. I know what i want, but i don't know exactly how it's called. I hear somewhere that ubuntu (or linux) has hotkeys , shortcut to start ...
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199 views

Lost extended partition after installing windows

I was using Ubuntu 13.04 and the hard disk was partitioned as follows: Primary Ext4 (250GB) Linux Extended (250GB) and Ext3 or Ext4 logical partition Linux Swap (4GB) I have installed Windows 7, ...
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Question regarding drives

I am a new Ubuntu user who has spent a lot of time on Windows. A very common practice for me on Windows was making two drives, C: and D: , storing installs/files in C:, and I used D: for backup or if ...
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59 views

How can I change partition ext4 boot options?

I want to make boot-able to my user a partition called "backup". My intention is keep here data. To be accessed with "DiskInternals Linux Reader" on windows, and from my user on linux. However I ...
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1answer
60 views

Unable to mount Secondary Harddrive

My primary hard drive is a SSD and is boot essential drive. I have a 1.5 TB hard drive (HDD) in my computer which is partitioned: 440 GB for my Ubuntu as ext4. Today when I booted up I got an error. ...
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238 views

Use IOzone to check read/write performance of ext4 and btrfs?

Can someone help me to use IOzone filesystem benchmark tool on Ubuntu to check the performance of ext4 and btrfs filesystems? I have installed Ubuntu into a VM.
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979 views

Ext4 constantly mounts as read-only

I'm at a complete loss, here. After only using my computer for short periods of time (often less than a minute), my root partition (Ext 4, /dev/sda5) become read-only without warning. This happens ...
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148 views

Formated xfs partition to ext4 by mistake, can it be recovered?

I formatted a xfs partition by mistake to ext4. Can this be undone and the data recovered? Actually, I did not chose to have the partition reformatted during installation, I just kept the default ...
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326 views

Can't recover formatted Ext4 partition file system. :( Suggestions?

I've been at this for days now, so I'm hoping you can help me! Original setup: This is a 200GB firewire drive, originally formatted via Ubuntu 11.04 Disk Manager with a Master Boot Record, and a ...
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Data recovery after formating from ntfs to ext

Ok, my 320GB internal laptop HDD was partioned as (1) 20GB partion EXT4 (2) about 290GB extended partion to two NTFS partions (3) 4GB SWAP partion Sure ubuntu is installed on the "EXT" partition ...
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Ext4 Data Recovery Help

My data is on an Ext4 disk that is very corrupt, here is the output from fsck.ext4: http://paste.debian.net/plain/47345 (There are 664 inodes containing multiply-claimed blocks.) Why has this ...