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

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converting a usb ntfs drive to ext3/4?

I currently have 3 external USB drives in NTFS mounted to my Ubuntu box that i just took off my windows box. Looking to permanently convert them to a Nix partition but i dont have the spare hard drive ...
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My ext4 disk is bigger on the outside

Successfully installed a clean 16.04 onto a Hybrid Disk (Seagate® Laptop Thin SSHD) on an HP Laptop that previously refused to run without Windows. All Ubuntu tools, gparted, disks, nautilus tell me ...
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How can I resize an ext root partition at runtime?

How can I increase the size of the root partition of a system at runtime? I have a partition that is not allocated after the root partition (which is also ext4), how can I add that unallocated space ...
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How to change data parameter in Ext4?

I'm using Ubuntu 14.04 and I want to test my filesystem with IOzone (filesystem benchmark tool). I want to test with data={ordered, writeback, journal}. How can I do this?
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572 views

Fixing "The ext4 file system creation in partition #1 of SCSI5 (0,0,0) (sda) failed

The other day, I was using my gaming laptop (ASUS ROG G750JM) that I got last year when it froze up and shut itself off. When I tried to reboot it has a system 32 error message, since I don't have a ...
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Partition Errors and Remounts Read-Only when Accessing Specific File

I have a pretty basic system running Ubuntu 16.04, 1 HDD, running a few partitions: sda1 - EXT4 - 100G - / sda2 - EXT4 - 723.5G - /home sda3 - NTFS - 100G - (windows) sda5 - SWAP - 8G Whenever ...
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2answers
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Trying to install Ubuntu on USB - “Failed to create system file”

NEVERMIND~ Before I start, I am completely new to Ubuntu and the terminal commands used. I only know a few from what I have tried. I have been working on trying to install Ubuntu on a 31GB flash ...
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54 views

ERROR message : EXT4-fs error: ext4_find_entry 1451

I have a dell Xps 15 9550 and I have installed Ubuntu Gnome 15.10 in the UEFI dual boot along with Windows 10. Ubuntu works fine but after running for a while it goes to the black terminal screen with ...
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1answer
25 views

Is using exFat (linux driver) for writing backups safe? [closed]

Using an exFat partition gives me the advantage to be able to read and write on Windows and Mac natively. While Windows and Mac are using the original driver from Microsoft (Apple bought a license), ...
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1answer
75 views

How can an ext4 partition automatically be mounted to /var directory on system start?

Is there a way to ensure that a new partition with an ext4 file system is automatically mounted at boot to the /var directory?
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2answers
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How to circumvent hard link creation permission to directories on the same file system

I'm well aware of the difference between symbolic and hard links. I'm also aware of the dangers of creating hard links to directories. Nevertheless, I'm insisting on creating a hard link to a ...
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40 views

Are my files on an ext4 filesystem recoverable after removing the logical volume the filesystem was inside of?

Scenario: The other day I was trying to "unmount" some logical volumes so that I could close the LUKS partition they were inside. I accidentally uses lvremove thinking that was the right command to ...
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27 views

Changing file system back to ntfs

before installing Ubuntu I partitioned one of my drives and then installed it on one of the partitions which I agreed to change to ext4. But now the whole drive seems to be in ext4 so I can't read it ...
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0answers
31 views

Partition external hdd for Linux/Mac/Windows/Ps3

So i need 3 Partitions on an external hdd like the following, but i can't get it set up Partition 1: fat32 (Ps3, Windows, Mac, Linux) -> movies etc. Partition 2: exfat? (Mac, Windows, Linux) -> ...
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575 views

the attempt to mount a filesystem with type ext4 failed

newbie to linux/ubuntu enviorment, trying to install ubuntu but during the installation processing after selecting the region then it propts an error "the attempt to mount a filesystem with type ext4 ...
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13 views

Why IOZone returns random values in my Ubuntu 14.04?

I want to execute IOZone¹ tests in my filesystem (Ext4). I'm using Ubuntu 14.04 LTS in graphical mode. But results seems like more randomic if comparing to results from text mode. What factors are ...
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1answer
205 views

ext4 broken file system on ubuntu 14.04.4

I have a desktop computer with Ubuntu Desktop 14.04.4 LTS 64-bit with an attached HDD USB 3.0 4TB Intenso 1 partition ext4 data drive only (no OS or Apps). After a sudden power failure I am unable to ...
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2answers
5k views

How to create ext4 encrypted partition on Ubuntu 15.04 with new 4.1 kernel?

Can I create a new ext4 encrypted partition with kernel 4.1 on Ubuntu 15.04?
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How could I mount an ext4 partition and have write permission?

I've set the /etc/fstab file so that I can mount an ext4 partition on startup and I did it with the following options : rw, auto, nouser, exec, sync. The problem is that I can't create or delete any ...
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5answers
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Solving permission problems when using external EXT4 hard disk with multiple linux installs

Hello I have a external hard drive and since I only use Ubuntu and Fedora I decide to format my hard drive to ext4 everything is fine. The problem is when i mount the drive i need to change the ...
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40 views

How to carefully cut space from disk D and put it for Ubuntu?

I have Windows 10 and Ubuntu 14.04 on my PC where disk D contains a lot of free space, so I want to put this space for Ubuntu ext4 file system. Can you explain me how I should do it? I really don't ...
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18 views

Data recovery - ext4

I'm an idiot because I just "initialized" 2TB drive by mistake in Windows disk manager. So I lost all data. It had only one ext4 partition. I tried to run Testdisk but It didn't help me. Is it ...
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126 views

Error? Ext4-fs (sda6): couldn't mount as ext3 due to feature incompatibilities

In recent weeks, when the attempt system boot Ubuntu, the following information appears on the screen with black background: Ext4-fs (sda6): couldn't mount as ext3 due to feature incompatibilities. ...
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Writemode journalling mode

From what I understand in data mode both inode and file data are stored in journal and in ordered mode only inode data is kept in jounral and removed after file data is successfully written. What I ...
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view LVM paritions in windows 7

im trying to browse in windows an old harddisk that i got, but its a LVM patition. How can I see a partition that is ext3/4 or part of LVM partition in windows? Anyone can recommend on a tool?
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28 views

what percentage of free space should I allot on ext4 volumes

Hi I am wondering what percentage of the ext4 volume I should leave empty,or if that is necessary at all for safe storage on large volumes. I have a 1TB and a 3TB external drives both formatted in ...
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Expanding ext4 and shrinking NTFS partition

I have my machine dual booted with Linux Ubuntu 14.04 Trusty Tahr LTS and Windows 7 Ultimate both 64 bit. I want to shrink the E:/ i.e. /dev/sda5/ by around 10GB and expand the Ubuntu partition by ...
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1answer
64 views

How can I add msftdata flag to an ext4 partition?

I have moved my partitions around to make room for dualboot, and now Windows 10 is on sda1 and sd2, with my linux install on sda3 (boot) and sda4 (home). I would like to access sda4 from my Windows ...
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NTFS -> EXT4 migration, where did 120 GB go?

wim@wim-ubuntu:~/Desktop$ mount | grep media /dev/sdc1 on /media/data type ext4 (rw,nosuid,nodev,uhelper=udisks) /dev/sdb1 on /media/wd type fuseblk ...
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2answers
54k 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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Does Ext4 stores owner and group names? Or only IDs?

I am wondering if Ext4 file system stores names or IDs for file ownership information? Most probably the IDs... but that makes another question. Does all Ubuntu versions have standardized IDs for ...
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Ubuntu 15.10 doesn't seem to support sparse files

On Ubuntu 15.10 using ext4 when I perform truncate -s 512M test.img du -h test.img the output is 513M test.img however if I run du -h --apparent-size test.img the output is 512M ...
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59 views

Should I format all my drives, internal and external to ext4?

Finally ready to remove my Win7 partition on my Ubuntu Gnome system. I have 3 internal drives with music, movies, and pictures that I will be backing up and formatting. Should I format all my drives ...
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26 views

Expanding partition in Gparted backwards vs. moving backwards and expanding

Which is quicker and safer?: Enlarging a Gparted partition backwards OR Moving the original (smaller) partition backwards, and then enlarge it? Example demonstration Enlarge /dev/sda4 to fill ...
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1answer
29 views

ubuntu wont load, partition no mount point or file system

Update 24hrs, took all day. Thanks for all your help. New hard drive, Ubuntu install & then testdisk & maybe e2fsck gained almost full accesss to the failed/blocked ext4 partition (which had ...
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What is the difference between ext3 & ext4 from a generic user's prespective

What are the very big differences between ext3 and ext4 from a generic user's perspective? I heard, sticking with ext3 is wiser. Is it true? EDIT: One thing I want to note that, I am a dual user ...
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1answer
48 views

how to partition the mounted drives in ubuntu 14.04

i've installed ubuntu 14.04 in single boot. My hard disk have 1tb capacity. While i'm trying to install windows in place of the ubuntu it shows no drivers are found error. So i'm decided to ...
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60 views

How to install Ubuntu Desktop on XFS or BRTFS using automatic partitioning?

Currently, when install Ubuntu Desktop, and by choosing automatic partition for a brand new hard drive, there is no way to select which file system will be used for it. It auto-selects EXT4 and the ...
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54 views

Recover unreadable directory on ext4 partition

One of my directories in a ext4 filesystem on my SSD became unredable and I need to recover the files. Here is what I did to crash the filesystem: I accidentally created 1.5 million small files in ...
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1answer
85 views

problem mounting new disk partition

I'm trying to install Arch Linux for a Raspberry Pi 2 according to their instructions on http://archlinuxarm.org/platforms/armv7/broadcom/raspberry-pi-2 on a brand new 64G micro-SD card. I'm doing so ...
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Directory converted to a file

I have an external HD formatted to ext4. Somehow a directory is now showing up as a file (i.e. it is missing the 'd' in the attributes). fsck does not show any errors. I don't believe that the ...
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2answers
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Does reformatting an NTFS drive to EXT4 remove the fragmented parts of it?

I purchased a 2TB hard drive that was initially formated as ntfs and have been using it on my NAS for a while. I did a scan on it and found out it was a bit fragmented. I didn't want to waste time ...
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0answers
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Full disk encryption on multiple drives; ext4 and GPT partition table; enter only 1 key

I'm looking for a tutorial (with clear steps) similar to the following article, but using ext4 and GPT partition tables. Full disk encryption with Btrfs and multiple drives in Ubuntu · Bryce ...
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111 views

ext4 I/O Error after suspend - filesystem readonly

i am using ubuntu 15.10 with kernel 4.2.0-23-generic. It is installed on a compact flash card. Sometimes the system wake up and remount the root filesystem to readonly. I have to repair the filesystem ...
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1answer
26 views

Ext4 partition problems

I have an 1.5tb external hdd. Yesterday morning it worked well. The system accidentally freezed, and i restarted the system and i cant mount the partition. I removed the hdd from the cage, and used ...
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Creating a new linux partition to the left of linux partition

When I moved from windows to Linux I thought I may not use it much so I only used some 60gb for Linux. But nowadays I don't touch windows. I would like to move the free space from windows partition ...
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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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Can I disable updatedb.mlocate?

On ubuntu server here and I'm trying to unpack 300M image files from a compressed file format using Java. My unpack rate is 0.5Mbytes/sec, abysmal (34 days to unpack 1.5TB at this rate). I'm trying ...
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0answers
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Convert NTFS to ext4 and encrypt? [duplicate]

Is there a way for me to convert a "live" drive (i.e. with data on it) from NTFS to EXT4 and then also encrypt it? The drives are USB connected, but not flash disks.
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2answers
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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: ...