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

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Formatting 128GB SD card to ext4 with gparted

I am trying to format a SanDisk 128GB SDXC card plugged into the internal SD card reader on a Toshiba Chromebook 2 running Crouton. When I format to ext4 using gparted the operation never completes, ...
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What does the 'jekyll 2.4.0 | Error: Permission denied - /sys/fs/ext4/sda1/trigger_fs_error' mean

I am trying to run a Custom GitHub Pages with Jekyll, but every time when I run bundle exec jekyll serve I get the below error: jekyll 2.4.0 | Error: Permission denied - ...
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Unable to Mount ext4 filesystem: bad block size 65536

root@vagish-SVL24115FAB:~# lvdisplay --- Logical volume --- LV Path /dev/vg1/lv1 LV Name lv1 VG Name vg1 LV UUID ...
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New ext4 partition and used space

I have fresh ext4 partition, which means I just formated it with mkfs.ext4 -m 0.1 /dev/mapper/abak-home, and there's already 27G space used. Setting reserved root space (-m) to 0 didn't have any ...
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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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28 views

Partitioning my system [duplicate]

How can I create a 500 Mb partition formatted on ext4 via command line ? Is this possible ? I'm trying to get accustomed with the terminal on Ubuntu 14.04.
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How do I create an encrypted filesystem inside a file?

Recently i've found this interesting tutorial: http://flossstuff.wordpress.com/2011/08/07/using-a-file-as-a-storage-device/ It explains how to create an empty file, format it as ext4, and mount it ...
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Disabling Journaling in Ubunu 14.04?

I installed Xubuntu (sometimes running Cinnamon, but I digress) and would like to disable journaling on in order to make file-shreddingthe ext4 system partition in the system partition more effective ...
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Ubuntu take too long “Creating ext 4…”

So I got wifi problem with Ubuntu 14.04 LTS so i decide to switch to 14.10 version, it did solve the wifi problem because I can access the Internet while installing 14.10 version but the install took ...
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3k 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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What does the grey slice in disk usage represent?

When I right click on Properties for my ext4 partition I get the following pie chart: The meaning of the blue and white slices are fairly obvious, since they are in the legend to the right, but ...
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problem re-installing ubuntu 12.04 LTS amd64 on DELL inspiron 5454

I've just bought a second hand DELL. I always use Ubuntu, and DELL is usually very simple and straightforward, I usually never have any problems. However this DELL is having problem after problem. ...
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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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rsync not working between NTFS/FAT and EXT

I have music that I play in my car, from an FAT32 USB stick. The folder which I use to put songs on is stored on my EXT4 hard drive. I add/remove/retag songs regularly and occassionally want to ...
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2answers
50 views

Converting my hard drive to NTFS [closed]

I have a new install of Mint and I would like to go back to back to Windows. I'm aware I need to convert it to NTFS and have tried to make gparted work but it not would allow me to change/shrink my ...
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79 views

fstrim does not work (Ubuntu 14.04, ext4, Intel SSD 520)

I've been googling around for hours without having found an answer. I've found some hints, but they don't correlate with each other. $ sudo hdparm -I /dev/sda | grep TRIM * Data Set ...
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Lost all files in root partition without formatting partition and delete operation, TestDIsk is not help?

I've Windows 8.1 and Ubuntu 14.04 installed in my PC. Two system were in different disk. All disks are in GPT mode. I used one software, "Paragon ExtFS for Windows", which can mount EXT4-partition in ...
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How to expand the ext4 primary partition size in a VMware Player virtual disk?

I have a VMware Player virtual machine setup, running Ubuntu 10.04 as the a guest OS. The VM was created on a 20GB virtual drive, with a single partition for working space. Finally I got to the point ...
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108 views

Input/output error on mounted usb disk

I have an external usb disk mounted to my machine, and everything works fine for hours or days, but eventually I cannot access the disk anymore. When I try to list the mounted directory, I get ls: ...
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255 views

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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Why is my read speed limited to 40 MB/s (< 25 %) reading from ext4 when compress-force is zlib and there's no CPU usage?

I'm moving data from an ext4 filesystem on a HDD connected with USB 3.0 which usually reads and writes with 170 MB/s to a btrfs subvolume on a SSD which usually reads and writes with 360 MB/s with ...
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Cannot uninstall Ubuntu… boot problems

I've been trying to remove Ubuntu from a laptop (separate issue), but I've not been able... any suggestions will be appreciated. Here some details: Dell Inspiron laptop, 32 bit, no UEFI secure boot ...
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81 views

ECRYPTFS_FNEK_ENCRYPTED files and folders

I had a problem using my old hard drive, so I'm willing to recover the files in it, but it is encrypted, and all the files and folders are named ENCRYPTFS_FNEK_ENCRYPTED and some gibbberish... The ...
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32 views

Copy a file from one ext4 partition to other

I have two ext4 partition and I want to copy some files from one partition to other in GUI not using terminal, but it does not allow me to do so. It simply a root permission problem. I just want 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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gdisk before umount -> file system corrupted

I think I did something stupid, but I don't know how to fix it... Please help: I connected a NTFS format 2TB HDD to my ubuntu, and would like to format it to ext4 I mounted it, and copied the files ...
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EXT4-fs errors and sd errors. Rejecting I/O to offline device

System Configuration: Ubuntu 12.04 server 64bit HP Proliant dl140 g3 32gb of RAM Intel X5365 quad core 3GHz LSI SAS1068 2x WD black 2TB SATA HDDs in RAID 1 Errors: [ 2044.430919] EXT4-fs (sda1): ...
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41 views

Can't resize existing partition with gparted

I'm trying to resize my ext4 partition where my ubuntu (elementary os) is installed on. I started a ubuntu live cd and opened gparted, see screenshot There is no way to allocate the free space for ...
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400 views

Problem with booting Ubuntu 14.04 from a btrfs partition

I have installed Windows 8.1 Update 1. After that I have installed Ubuntu 14.04 on a btrfs partition. However, after the restart there was no GRUB menu to choose from and the system booted directly to ...
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114 views

Unable to mount usb thumb drive due to write protection

I have a thumb drive called EndroCraft-Lin, that all of a sudden turned read only, then became unable to be mounted. It's a PNY 8GB usb stick, that's formatted to an ext4 filesystem. Here's the error: ...
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626 views

Format external hard drive to ext4 in command line [duplicate]

How do you format an external hard drive to ext4 via the command line in ubuntu?
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Force fsck.ext4 on reboot, but really “forceful”

One of my Ubuntu 10.04 servers is giving me trouble. When I run fsck.ext4 -n /dev/sda5 it tells me there are errors in the free inode count, free block count, and more. I have tried: touch ...
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Accidentally partitioned media drive as ext3 during install (was ext4), how can I recover?

I recently did a fresh install of ubuntu on a system with an old ubuntu install. I have a separate hard-drive which used to have a single ext4 partition, but during the install I accidentally selected ...
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623 views

Accidentally formatted ext4 partition

I have just formatted an ext4 partition to fat32 using gparted. In which directions should I tread in my attempt to recover?
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Grub rescue after corrupted hard-drive ('read-only filesystem")

I run xubuntu 12.04 alongside a NTFS storage partition and a windows 8 partition. I moved my MySQL data directory off the xubuntu (ext4) partition, onto the NTFS partition, and did an import of a ...
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slow hard disk Ubunto 14.04 ext4 on thinkpad dual boot

Ext4 - is it slower? Have a Thinkpad with 8GB drive , 4 processors. Intel® Core™ i3-3110M CPU @ 2.40GHz × 4 . Ubuntu 14.04 LTS with updates applied. File reading is very slow. IDE STS hangs when a ...
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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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New hard drive accessible to everyone

OS: Ubuntu 14.04 desktop The only way I've found out how to gain access to a second hard drive through nautilus is to re-install Ubuntu while the hard drive is in the computer. Then, when I go to ...
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236 views

How to migrate from ext4 to zfs root filesystem with separate ext4 boot partition?

I'm trying to change my root partition from ext4 to zfs (simple partition, without ZFS volume management functions) by moving all files in a live system (Ubtunu 14.04) from the ext4 partition to an ...
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305 views

improve performance - NTFS to ext4

My laptop is 7 year old HP compaq with ubuntu 12.04. It was dual booting with windows partition. I was not using windows for the last 1 year and formatted and the windows drive and removed it. ...
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Ext4 file system format drive does not show in Windows 8

To install Ubuntu 13.04 I formatted a drive with Ext4 file system format. After format I can't open the drive from windows 8 Explorer. Whenever I try to open the drive following error shows : Thanks ...
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How to roll back failed gparted ext4 partition growth

I had a 12TB ext4 partition which I wanted to extend to 18TB. I've added the new disks to the RAID and after doing that I wanted to re-size the partition to occupy this new space. I started the growth ...
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Is it safe to defrag ext4 file system using e4defrag?

My file system partition is 90GB, and now 75% of the space is free after removing 53GB of recovered files using photorec from my home directory. I just want to know, is it safe to defrag the whole ...
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I don't understand the behavior of e2fsck

I've got a USB drive that's 1TB in size and has a bunch of media files on it. It originally had an NTFS partition, but I'm moving to Ubuntu Server 14 so I wanted to convert it to an ext4 drive. I use ...
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Recover deleted Windows Partitions after formatting it as ext4 for Ubuntu installation [closed]

I just did a mistake by reformatting the whole Hard-Drive as Ext4 when trying to install Ubuntu on the PC along with my Windows 8. However, in the Ubuntu installation process, I reformatted the whole ...
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Formatting and Partitioning SSD Help?

So I just installed Ubuntu 14.04 LTS on my netbook and was going through the things to do to optimize my SSD (https://sites.google.com/site/easylinuxtipsproject/ssd) Steps 5 and 6 tell me to partition ...
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Retrieve data from a FreeSpace volume [previously ext4 volume]

Morning, Afternoon, Evening, any thing you wish. I'm using an HP-ProBook 4540S 750 Gb HDD 4 Gb of memory Intel Core i3-3110M CPU 2.40GHz x 4 I'm a software developper,so I use to install 2 Ubuntu ...
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42 views

Copying files to external HD formatted to ext4

I have bought an external HD, transcend 2TB 2.5 and formatted it from FAT32 to ext4 since I work most of the time with ubuntu. Now when I want to copy files from my computer to the device I get the ...
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Why do ext2 and successors not need defragmentation?

The ext2/ext3/ext4 filesystem family does not need defragmentation. What underlying design help this filesystem in not getting fragmented?