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

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How to extend EXT Partition of Ubuntu

I've Dual booted Ubuntu in PC by shrinking the C: drive actual size of c: drive ntfs is 100 GB and Ext partition is 15 Gb now I'm thinking to extend the size of EXT where Ubuntu is installed without ...
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389 views

Ext4 going wild

All of my main hard drive Barracuda 7200.12 SATA 6Gb/s 250GB ST3250312AS ( 2 years old ) going wild. It has started from 28 June 2014. Partitions sda1(root), sda5(home), sda7(var) caught this from ...
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Can't automatically mount ext4 partitions under Ubuntu 14.04 (but can mount NTFS ones)

So I just got alongside my Windows 8.1 a cool Ubuntu 14.04 and quite happy with it (my default OS now). I just have a problem: the fact that I can't mount ext4 partitions at boot is quite annoying. I ...
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Bcache hangs on Ubuntu 14.04

I successfully setup my system to use bache in /home partition (200GB SSD partition as cache for 500 GB HDD partition). However, I keep receiving these messages: INFO: task bcache_writebac:222 ...
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1answer
850 views

How to remove has_journal feature on primary disk

I'm running a Ubuntu 14.04 LTS on a VMware virtual machine and I'd like to disable journaling feature on the primary disk. I did find this useful post but I can't use it because it says The ...
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2answers
287 views

shrink ext4 partition on raid 10

My question is similar to Move ext4 partition, but the challenge I couldn't figure out is how to shrink a partition from the start. So suppose originally the partition (with raid) is like this. ...
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29 views

When is disk fragmentation an issue and how does one fix it?

My ext4 drive recently filled up to 95 percent capacity before I cleared out space on my disk. While transferring files from my computer to an external hard drive, I noticed a lot of my oldest media ...
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50 views

Ext4 switching to read only mode

I have very frustrating problem. My server randomly switches / mount to read only without any pattern. Only message that I've found in logs is: htree_dirblock_to_tree:920: inode #14286877: block ...
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70 views

Linux partition system

While installing Ubuntu, I only created two partitions for Ubuntu one for swap and I formatted the other as ext4 and set mount point as "/". The Operating System is working flawlessly. I was just ...
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2k views

Ext4 larger than 16TB is stable for production systems? [closed]

Ext4 seems to have had a size limit of 16TB due to e2fsprogs. But e2fsprogs 1.42 release says it supports filesystem larger than 16TB. So, Ubuntu 12.04's current e2fsprogs' version is 1.42, and I ...
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100 views

Gparted resizing boot partition

So i have some unallocated space and the root partition which is pretty small. I want to add that space but it needs to move it and then grow it . I know it will take some time but i'm more concerned ...
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47 views

Add space from a NTFS partition to Ubuntu

So, i installed Ubuntu alongside my Windows 8 on a 15 GB partition i took from another drive . Ubuntu splitted it into 2 partitions of 7,96 GB and 7,04 GB and i realized that it's kind of small so i ...
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34 views

Using part of an external hard drive for ubuntu and another part for windows

I have a 1TB external hard drive that I have installed ubuntu 14.04 on, partioned as 150gig for ubuntu and 2gig for swap space. The remaining memory is free. What I am wanting to do is use the ...
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2answers
113 views

Any File Manager for accessing files of linux from Windows? [closed]

Any File Manager for Windows that can read ext formatted disk?
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0answers
341 views

How long does ubuntu take to create ext4 journal;ing file systems for 500Gb drives?

I have a new server with four new 500Gb rotary hard drives. I am installing Ubuntu 14.04LS from a bootable USB flash drive. I asked Ubuntu to format the HD's with ext4 journaling file systems. Three ...
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2answers
106 views

How do I backup system to a different partition on the same drive?

I am a linux newbie, tech oldie. I am setting up a system with Lubuntu 14.04. Although, when I ran the installation I created two partitions -- 1/2 for quickie backups and 1/2 for the installed ...
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2answers
57 views

Advice on what FS to use

I am installing a 2TB drive on an Ubuntu server that will be accessible on a network of Windows and Ubuntu machines. Should I format it using FAT32 or EXT3/4? Thanks David C
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1k views

Upgrade to Ubuntu 14.04LTS from 13.10 failed and now have a black screen

I tried to upgrade from Ubuntu 13.10 to 14.04LTS. In between it asked about some configuration files whether to keep or replace them, for all I chose to replace them on each prompt but at the end ...
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2answers
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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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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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75 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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2answers
14k 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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3answers
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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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2k 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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444 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
37 views

Can I create another partition on a single partition system? [duplicate]

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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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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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
427 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
484 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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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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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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3k 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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567 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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304 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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259 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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2k 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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25 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
572 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
881 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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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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2answers
30k views

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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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 ...
2
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1answer
559 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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321 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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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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62 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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623 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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77 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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488 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.