A permanent data storage device used for storing and retrieving digital information using rapidly rotating discs (platters) coated with magnetic material in a rigid form factor (as opposed to floppy disks).

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282 views

Any temporary fix for / being remounted as read-only?

My disk has a few bad sectors and has already failed the SMART tests. It obviously is going down. It gets remounted to read only and I have to fsck and reboot all over again. Is it safe for me to ...
3
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2answers
318 views

LVM with SSD and SATA hard disks

Is it possible to create LVM partitions for both SSD and SATA hard disks? I mean if there isn't any conflicts.
2
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1answer
966 views

How to fix hard-disk error connected by usb? [duplicate]

My system is Linux 64bit, my hard-disk is a 1TB WD HD, connected to my computer by USB3.0. I found some files cannot be copied, they are video files, and it seems I can play the video. I ran e2fsck ...
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1answer
161 views

Does symlinking from Drive A to Drive B affect I/O on Drive A?

I was wondering if IO through a symbolic link affects IO on the host drive even if it points to a seperate drive? My setup is, /dev/sdb2 1.8T 443G 1.3T 26% /home1 /dev/sda3 1.8T 1.7T ...
2
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1answer
1k views

I/O error but no bad block is reported in syslog

I got errors like this in my syslog, but there's no bad block or sector defined in kernel report, I can't just replace the HDD right now and I prefer to reallocate the bad blocks for now, so I need ...
2
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2answers
969 views

Install Linux on two hard drives

I am new to Linux. I have a machine with two hard drives, the first one has 80GB and the second has 120GB. I am about to format this machine and install Linux. I want to install all the main ...
6
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1answer
497 views

HDD allocation fstab

In my PC running Ubuntu 12.04 LTS I have installed three SATA hard drives. Two of them are installed near a cooler. I want to physically switch two drives (one that is not near the fan should be moved ...
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2answers
5k views

How to Throttle per process I/O to a max limit?

I'm looking for a way to limit a processes disk io to a set speed limit. Ideally the program would work similar to this: $ limitio --pid 32423 --write-limit 1M Limiting process 32423 to 1 megabyte ...
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1answer
205 views

Hard drive writes freezing up Gnome

I'm currently running Debian 6.0.5 on my white Macbook 2008 (4,1) and have recently noticed that when I download, move, or decompress a file, Gnome freezes up completely for at least 20 seconds. These ...
3
votes
1answer
726 views

Fedora installer doesn't see my Windows 7 partitions

I tried to install Fedora 17 on the same disk I have Windows 7. First I got the message, that there are no free space to create partition, even in Windows part of disk was marked as unallocated. I ...
2
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2answers
290 views

Find when a hard disk was first installed

What's the command in AIX to find the first time a given hard disk was installed?
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0answers
37 views

Recreating EXT4 partition without losing data [duplicate]

Possible Duplicate: Can't mount EXT4 hard drive after mounting it in windows I have a 2TB Western External USB harddisk. I formatted it to EXT4. one time I plugged it to a windows ...
1
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2answers
432 views

Why does e2fsck fail during boot, but not later?

When booting my Debian server, I'm presented with the following error concerning my external hard drive: /dev/disk/by-label/elements: The superblock could not be read or does not describe a correct ...
2
votes
1answer
380 views

Trapping “READ FPDMA QUEUED”

Recently I encountered a kernel message: ata3.00: exception Emask 0x0 SAct 0x1 SErr 0x0 action 0x0 ata3.00: irq_stat 0x40000008 ata3.00: failed command: READ FPDMA QUEUED ata3.00: cmd ...
2
votes
1answer
2k views

Hotplug area too small error

I have VM running under RHEL6, which is running under HyperV. It has a lot of important soft installed, but does not have suffocating workload (~10% CPU is used). It's been really unstable recently ...
5
votes
3answers
746 views

Two EFI disks with Grub2

I bought two SSD disks and as usual I though that installing Windows on a completely separate disk would be the easiest solution, but I can't find any tutorials for dual booting with grub2 (efi). All ...
4
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1answer
381 views

Gentoo Live CD from Hard Drive: No Mountable Filesystems on root after modules loaded

I am attempting to install Gentoo on my PowerPC Mac. I have reached the point where I can boot the Live CD (I have no functional CD Drive, so it is from a spare Hard Drive), but after the kernel is ...
13
votes
5answers
8k views

How to find which process is regularly writing to disk?

How can I find which process is constantly writing to disk? I like my workstation to be close to silent and I just build a new system (P8B75-M + Core i5 3450s -- the 's' because it has a lower max ...
2
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3answers
2k views

Can't mount EXT4 hard drive after mounting it in windows

I have a 2TB Western external HDD. Its original filesystem was NTFS but I formatted it to EXT4. I had no problem in Linux; But today after I mounted it using ext2fsd in a windows box, I cant mount it ...
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1answer
1k views

Disabling readahead with hdparm or POSIX_FADV_RANDOM

From Linux kernel's doc the advice POSIX_FADV_RANDOM seems to disable readahead. But whent I disable Readhead using (sudo hdparm -A 0 /dev/sdb) I get huge degradation in performances; also noticed ...
16
votes
2answers
993 views

What does mv do in case of errors?

I've just tried to move a big tree from one disk to another, which was too small. Now, I'm left with something I can't really understand - it looks like some files were indeed moved away from the ...
7
votes
4answers
4k views

Convert image of a partition into image of a disk with partition table

I have an image of an existing partition generated with dd if=/dev/sdXN of=image.bin. Now I want to use this image as the basis for a virtual machine. I know how to convert the image into a format ...
7
votes
1answer
562 views

How to re-size virtual disk with installed Linux system?

I've got hard system configuration there and I don't want to re-install it again but I need more space now. Current system space is 30GB. Seems like it's not possible to re-size disk so what I need ...
21
votes
6answers
5k views

How do I correlate /dev/sd devices to the hardware they represent?

A drive is beginning to fail and I only know the device by its /dev/sdb device file designation. What are the ways that I can use to correlate that device file to an actual hardware device to know ...
7
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3answers
348 views

How do you tell what hard drive a file is on?

On Debian, I have multiple hard drives, how do I know where /var/www is? Bonus: How do I check the capacity and consumed capacity and of my drives?
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5answers
5k views

How to know if /dev/sdX is a connected USB or HDD?

How can I know if /dev/sdX is a local HDD or usb key ? best doing this without root privileges. OK , udevadm helped a lot: For local HDD: udevadm info --query=all --name=sdb | grep ID_BUS E: ...
2
votes
2answers
5k views

Solaris disk failed, how to remove it?

I have a system with Solaris 10. One of the internal disks is broken: c0t0d0s2 auto:sliced rootdisk1_1 rootdg online c0t0d0s2 - c0t1d0s2 auto - ...
3
votes
1answer
85 views

Encryption of home directory for securing data after harddisk corruption

Always when I install Linux OS (e.g. Ubuntu), there is a possibility to encrypt the home directory. I was asking myself why is this useful. Is it good in the case when my harddrive is corrupted and I ...
3
votes
4answers
3k views

From df device name to physical drive name (vendor / type)

Seeing the device name by df, is it somehow possible to resolve it to the physical drive name such as vendor / type. /dev/sda3 915.4G 34.9G 880.0G 4% /share/HDA_DATA /dev/sdd3 ...
13
votes
1answer
2k views

Is disabling barriers for ext4 safe on a laptop with battery?

The manual page says about the barrier option for ext4: Write barriers enforce proper on-disk ordering of journal commits, making volatile disk write caches safe to use, at some performance ...
2
votes
2answers
551 views

How to increase the timer before drive spins-down?

I use Ubuntu 12 beta on a Lenovo Z575. I noticed that the disk spins down a few seconds after the last operation. When I am working, e.g. in the vim and write quite often, it spins-up and -down ...
2
votes
2answers
745 views

stopping harddisk spin-down on Asus EEE 1015PX (and other eee's as well)

I have an Asus EEE 1015PX netbook. It runs Linux (debian) without any powersavings enabled. E.g. no harddisk idle/spin-down tooling is running. Now constantly the harddisk spins down after it has been ...
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vote
2answers
882 views

RedHat Linux Space Usage Problem

I recently downloaded something on my Redhat Linux computer, and it told me I was out of space. I checked my disk usage, and it says I've used 100% of my folder, but as you can see I still have almost ...
1
vote
4answers
149 views

Erasing HDD , re-write only headers , is that safe?

I want to erase my HDD quickly with dd, so If I only "zeroify" the partition headers , like destroy the inode table, block size etc. But is that safe? UPDATE I have some partition not encrypted ...
5
votes
2answers
1k views

How to create a snapshot of a physical disk?

I have Windows 7 installed on one of my disks. I want to boot this Windows system in my Xen HVM, but I do not want the changes to be permanent. So I want to create a snapshot of my Windows 7 ...
2
votes
2answers
576 views

Partitioning Ubuntu and Windows 7 once and for all

I am dual-booting Windows 7 and Ubuntu (installed with wubi). So far there have been no problems, but now it says the disk is out of space all the time (I think that is because /dev/loop0 is used 100% ...
3
votes
4answers
3k views

What is the concept of Drives in Unix Systems?

In windows, we have C drives where all the softwares are installed and other partitions e.g; D, E etc to store our data. Now once we reinstall the windows for some reason, we install everything again ...
21
votes
3answers
721 views

How can I limit the output speed of stdout?

I'm running CentOS 5.7 and I have a backup utility that has the option of dumping its backup file to stdout. The backup file is rather large (multiple gigabytes). The target is an SSHFS filesystem. To ...
4
votes
1answer
2k views

What's faster, dd 1.5TB or rsync 500GB?

I need to save data from a failing hard drive. Sounds like ddrescue or myrescue (or maybe clonezilla?) will be my best friends here, but I'm just wondering what will likely be faster: using ...
2
votes
2answers
176 views

Why is my /home separate from /?

I was confused why I was getting out of space errors so I ran df and saw this: [me@fedlap /]$ df -h Filesystem Size Used Avail Use% Mounted on rootfs 43G ...
3
votes
2answers
1k views

How to disable clicking in Seagate ST3000DM001?

Recently I bought this disk and I cannot get rid of funny clicking -- funny because normally not configured disk make dry click. This one make click like a sweet chirp. But besides this, this click ...
2
votes
2answers
1k views

vmstat IO stats: why the high bo during a download?

On my RHEL 4 machine, I was downloading a huge file (2.5GB)..I was checking the output of vmstat and was especially curious about seeing the disk IO using bi and bo. I know iostat is a better tool ...
3
votes
3answers
1k views

Copying an HDD to a larger one by dd

I'm trying to copy an entire HDD which has IBM PC-style partition table to a larger one by dd on GNU/Linux. The questions are: Can I use the additional space on the larger disk by changing the ...
3
votes
5answers
3k views

GNU/Linux (Debian): detecting hard-disks mappings?

Let's suppose you have two hard-disks: one internal (boots GNU/Linux); one external (USB). "fdisk -l" detects both, but will not tell you which is /dev/sda and which is /dev/sdb. "lsusb" will tell ...
3
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2answers
8k views

How extend linux partition with?(after success to extend : fail to boot computer)

I have Ubuntu and I want to enlarge the disk space of /dev/sda1 from 10GB to 90GB. gparted Ubuntu 9.04 live cd show: Partition File System Size /dev/sda1 ext4 10GB /dev/sda2 ...
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2answers
552 views

Is “Disk failure is imminent” causing the errors I am experiencing?

I am getting SMART Status 184 end to end error, and "Disk failure is imminent", suggesting I need to get a new hard drive, and I will do. But now I am also getting error messages such as when running ...
3
votes
1answer
2k views

What is the fastest way to write all sectors on a drive?

The goal in my case is not to securely erase data, but simply to force sector reallocation by the drives firmware. I have a drive that has had a few file corruptions. It seems to be due to getting ...
1
vote
1answer
231 views

Which driver for USB enclosure should I install?

I'd like to connect my old harddrive to my laptop via USB enclosure. I connected it but it only produced strange sounds, so I thought that the enclosure is corrupted. I connected the enclosure to ...
2
votes
2answers
5k views

How to Expand LVM2 Partition in Fedora Linux

I've been using Fedora 15 on a VMWare virtual machine. Over time, the disk space I initially allocated for the file system began to run out, only 12GB left. I've expanded the disk space an extra 25GB. ...
2
votes
1answer
447 views

Cloned VirtualBox CentOS disk is unbootable after cloning in GParted

I cloned and enlarged an existing virtual CentOS-6 disk by the following steps: Create 15GB virtual disk and mount the old and the new disks in GParted. In GParted copy boot, swap and ext3 ...