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

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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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Trying to install Ubuntu on USB - “Failed to create system file”

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 drive, which ...
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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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22 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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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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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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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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31 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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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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16 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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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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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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27 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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15 views

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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48 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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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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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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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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24 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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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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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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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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72 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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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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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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94 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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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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25 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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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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Kernel fix for “file system becomes read-only” problem?

This is my first post to this list, but I've spent a lot of lurk time here; helpful place. Over the last 8 months I have encountered maybe 4 times a problem that can loosely be described as "an ext4 ...
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84 views

EXT-fs error that won't let up

I have a Xubuntu 15.10 dual boot with Windows. This started yesterday, I was trying to create a Xubuntu 15.10 USB live disk so I could help a friend. I had errors with it but now my system will ...
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Cannot fsck or e2fsck to repair disk. dumpe2fs returns “Couldn't find valid filesystem superblock.”

I've been dealing with this hard disk problem all day. External Seagate disk I've foolishly failed to back up still is recognized by PC but cannot be read. When I try to follow the steps here, it ...
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22 views

Cannot access ext4 partition

I created an ext4 partition using Disks application from Ubuntu Live CD But I cannot access it from my Ubuntu system on the same disk. It says: This location could not be displayed. You do not ...
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Wipe all erroneous inodes

My server recently crashed and left my raid6 with 8x4TB disks in a state where I had to force it to assemble. Two disks had event counters that were way behind, but the remaining 6 disks had the same ...
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partition - merge two ext4

I need to add free space into my linux partition. Actually I know how to resize NTFS partition but I can't merge with existing ext4. GPart doesn't work also GPartLive Please help
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How to get the metadata size in ext4?

i have one SSD drive and use whole partitions for my benchmark program. what i want to know is the size of metadata after some benchmark program. it's quite hard to know the number of data blocks ...
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installing (L)ubuntu 15.10 with ext4 native encryption on entire partition

I want to install (L)ubuntu from scratch and use ext4 native encryption to encrypt entire partition from root directory "/" down to the last file and have on that same partition installed the ...
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71 views

Slow transfer from internal disk to external USB hard disk

Lots of people have problem with copying to/from external USB hard disk. My system Ubuntu 14.04. External USB Seagate disk 1T originally NTFS. The disk is empty I am trying to copy 100GB to 1T disk. ...
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14.04 LTS Trim problem on an SSD

I own a Lenovo laptop with an M.2 NGFF slot. I put a 128 GB ZTC SSD card. This card is GPT partitioned and seen as sdb. I use it for the / which is EXT4 formated. Then I did a fresh install of Ubuntu ...
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Comparing NTFS and EXT4

NTFS and EXT4 File Systems. What are the key differences between them? What are the similarities between them ?
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ubuntu 14.04LTS won't boot on linode after disk resize EXT4 founded RO

I have an Ubuntu 14.04 on LINODE. I did a disk resize in the Linode GUI and it will no longer boot. This is what I see in the boot log: -- notice the weirdness around the EXT4 getting loaded RO but ...
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Change filesystem blocksize when installing 15.10

so, I'm very much out of my depth in the whole world of *nix here. I'm searching all over about file system block sizes, and I found this script which determines what I can tell are read-speeds with ...
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How to resize a partition of a GPT throught Parted Command line tool. (Using SSH Rescue Env.)

I have a Remote Dedicated Server with no Online control panel to resize partitions after initial OS install, so I am using the debian based rescue environment to manipulate the partitions unmounted. ...
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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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301 views

Change ext4 to NTFS for installing Windows 7 [duplicate]

I have a new installation of Ubuntu Mate and I would like to go back to Windows. I'm aware I need to convert it to NTFS and I have tried to make Disks work but it would not allow me to change/shrink ...
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Is it possible to install Ubuntu to an ext4 while remaining other partitions to an FAT32

I have an old hard drive with windows XP and I want to switch to Ubuntu 15.04 thus removing windows XP completely which is installed in C partition. My HDD is divided to 4 FAT32 partitions: C (9.30 ...
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How to format an external hard drive to ext4 in ubuntu 15.04?

I just got a WD mybook 6TB external hard drive. Most time, I will use it to transfer files between ubuntu systems. Sometime I use it for win or mac system. So anybody could suggest how to format the ...