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 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 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 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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21 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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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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36 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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19 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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28 views

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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8 views

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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4k 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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63 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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52 views

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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64 views

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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121 views

Where are the headers with IOCTL numbers for ext4?

I am looking for ext4.h, or another file that contains EXT4_IOC_*. There is nothing in /usr/include or /usr/src. I have linux-headers-generic installed. I am on Kubuntu 14.10. Where are the headers? ...
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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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3answers
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How to convert ext2 to ext4?

I installed Ubuntu 12.10, and I don't know why, I have an ext2 partition. How can I convert this ext2 file system to an ext4? Will I lose all my data?
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19 views

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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27 views

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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2answers
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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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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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66 views

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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51 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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113 views

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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8answers
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How do I repartition with GParted? [duplicate]

I wanted to create more space for Ubuntu on my hard disk in favor of my Windows partition. I booted the livecd and resized the NTFS partition to 100 GB. Then I wanted to resize my Ubuntu (ext4) ...
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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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2answers
38 views

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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219 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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1answer
176 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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112 views

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 ...
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72 views

Recovering deleted files on EXT4 disk

I deleted some files and folders on a external disk which I now want to "undelete", the disk uses EXT4 which makes it realy hard for me to make tools like testdisk work. I am using ubuntu 14.0 and I ...
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Is there a file system best suited for a torrent partition?

Following on from an excellent answer provided by user Gilles, I'd like to ask whether there's a file system particularly well-suited for fairly heavy torrent use. Soon I'll be setting up an Ubuntu ...
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What is the right way to work with large external hard drives?

I own this external HD. When I sudo fdisk -l I'm given this output: zach@tux:~/code/bing$ sudo fdisk -l WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support ...
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Data recovery (importantly .lrcat files) after formatting ext4 partition to ext4

I wanted to do clean installation of Ubuntu, so I formatted previous EXT4 partition having / mountpoint from older Ubuntu release. I then changed my mind and installed new Ubuntu to another partition, ...
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Formatted Ubuntu partition with ntfs on windows

I was running a dual boot Windows 8.1 and Ubuntu 14.04 till recently. I'd used my F: for linux and I accidentally forgot that and did a quick format on it into ntfs. I had a lot of code on linux that ...
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Large Sized HDD not recognized correctly?

Hello I have a question with newly installed HDD for my ubuntu file server. Motherboard: P7P55D-E LX<br> New HDD: WD NAS RED 4TB<br> OS : Ubuntu 14.04.1<br><br> ...
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417 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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EXT4-fs error on Ubuntu 15.04 crashing after installing an HDD for extra space, Kernel panic on live USB boot

Earlier last week I went ahead and bought a 1TB HDD so I could store some extra files on my work machine. Now I'm having problems with the system crashing. The first time I got the following error ...
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45k 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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Installing Ubuntu without touching the rest of corrupted drive

I have a notebook with GPT and UEFI. This notebook contains Windows 7. But after some problems Ubuntu LiveCD destroyed partition table of this drive and maybe some data. I urgently need this ...
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unable to log-in normally in ubuntu 15.04

whenever i try to log in its always shows me accpi failed (AMD GRAPHICAL DRIVER). after sometimes its moved to emergency mode . after that i moving to recovery mode to bypass graphical error , i ...
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Pc wont boot, I'm kinda new to ubuntu and don't know what to do

So I'll press the power button and it will say: [0.482250] ACPI PCC probe failed. starting version 219 [1.938863] EXT4-fs (sda1): ext4_check_descriptors: Checksum for group 4017 failed ...