Tagged Questions

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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2
votes
1answer
10k views

How to see free disk space on SunOS?

It really makes me mad. SunOS 5.9 #format Searching for disks...done No disks found! # mount / on /dev/md/dsk/d0...(skip) /var on /dev/md/dsk/d4 ... /opt on /dev/md/dsk/d5 ... /home on ...
4
votes
2answers
671 views

Create a partition from a directory

I have a Linux system with only one partition /dev/sda1 on /dev/sda disk with / mount point. Is it possible to create partitions after installation? e.g. create /dev/sda2 with the mount point /home/ ...
1
vote
1answer
2k views

Discovering EMC PowerPath LUNs and creating partitions on Solaris

I have to work with EMC PowerPath disks/LUNs. I find them in the /dev/dsk/ directory under names such as emcpower0a, emcpower0b, …, emcpower0z, emcpower1a, … Here are my points of confusion: Inside ...
4
votes
2answers
13k views

Can I fix bad blocks on my hard disk with a single command?

I'm working on fixing the errors in my Hard Disk, It's possible to do that manually but it might take hours. After typing this command sudo badblocks -b 512 /dev/sda, I got hundreds of results and I ...
3
votes
2answers
6k views

What does this hard disk error message mean: “Current Pending Sector Count …”?

I grabbed this information from Disk Utillity on Linux Mint: Current Pending Sector Count: Normalized: 200 Worst: 200 Threshold: 0 Value: 22 sectors What does it mean? Is it possible to ...
4
votes
2answers
10k views

How to find HDs associated with a mount point

I am running on Sun Solaris system. I would like to know the following How to find the HDs associated with a mountpoint? How to find all available HDs (those which are used as well as unused for ...
2
votes
0answers
733 views

Mount Freecom Classic SL Network Drive (NDAS) in Ubuntu 11.10

Both the Network Drive and the Ubuntu machine are connected by Ethernet to a Linksys WRT54GL router (192.168.1.1). To access the Network Drive in Windows, I installed the NDAS software and mounted ...
1
vote
1answer
489 views

Create recovery medium from Windows 7 recovery partition

Many laptops are delivered with Windows 7 recovery partition (but without CD or DVD) which takes place on the harddrive that could contain some Linux distribution or serve for data storage. I don't ...
1
vote
1answer
683 views

VirtualBox disk performance?

This option was newly added to latest version of VBox , googled a lot , seems no much information was revealed , could anyone please help me pick one disk format ? Which one owns better performance ...
2
votes
1answer
178 views

What exactly is a “home directory”?

When your University sends everyone an e-mail saying "We're sorry! One or more of our disks have failed; thus we've lost 'x' number of home directories on our servers." Is it basically just the root ...
1
vote
1answer
495 views

Disk Scheduler in Linux

I am studying about Disk Scheduling in my OS class. Thought about the disk scheduler in Linux. When I run cat /sys/block/sda/queue/scheduler noop anticipatory deadline [cfq] Someone explain about ...
0
votes
1answer
314 views

Formatting secondary hard drive that has windows on it

I recently installed an setup an Ubuntu Server machine. It has two drives in it and the other drive has windows installed on it. (I didn't want to overwrite the windows installation until I had my ...
1
vote
3answers
268 views

Get Position of RAID Hard Drives

I was recently tasked with creating a hard drive management system on Linux. I needed to write a program that monitored when drives came online and offline and created/removed links to the drive ...
2
votes
1answer
567 views

Equivalent to “copies=2” feature of ZFS in Linux with LVM

I have a laptop with only one HDD and is impossible add other HDD. The feature "copies=2" of ZFS is the perfect solution for to add redundancy to my /home in the laptop. I would like emulate the ...
3
votes
3answers
730 views

Debian preseed.cfg/automatic install setup not detecting hard disks

I'm trying to build a Debian automatic install set up using a preseed.cfg file loaded into a client by PXE. The host and client are both Virtual Box VM's. Everything goes smoothly on the client ...
1
vote
1answer
611 views

iostat usage and output

When I run the iostat command like this: iostat -d I get a result something like this: Linux 2.6.18-238.el5 (mon01) 09/03/2011 Device: tps Blk_read/s Blk_wrtn/s Blk_read ...
1
vote
3answers
766 views

Safest HardDrive Format for Archiving/Media Storage Data?

What is the safest hard drive format (NTFS, HFS+, XFS, ZFS, ...) for archiving or/and storing media (data)? I'd prefer to have the data not corrupt and be relatively safe (From corruption, ...) and ...
1
vote
1answer
2k views

Black Screen When Booting From .VDI Image

I have cloned a VirtualBox machine, which runs Ubuntu 11.04 32-bit as Guest OS. I now wish to transfer it to a new host machine running Windows Vista 32-bit. I’ve transferred the .vdi file and ...
1
vote
0answers
228 views

Accessing .VDI Image from Ubuntu VirtualBox [closed]

I have Ubuntu 11.04 installed in VirtualBox 4.0.10 on a Windows Vista Home Premium 32-bit host. I have a hard disk that I have added to the SATA Controller on the VirtualBox (a .VDI image). My ...
2
votes
1answer
207 views

GRUB won't boot, live CDs either

First, my computer crashed slowly, as if all the files were being deleted, then when I tried to reboot, GRUB just didn't show up. I also tried to boot on a live CD but it doesn't work either (yes, ...
2
votes
1answer
113 views

Running comprehensive speed tests on a drive

I'm wondering if anybody knows of any free packages, scripts or command line tools that can report a comprehensive speed test on a drive (e.g. generating random data, and testing how long it takes to ...
3
votes
3answers
1k views

Recommended fstab settings

I made a new partition for my home drive by following this guide I have no idea what the fstab setting it suggests mean: UUID=???????? /home ext3 nodev,nosuid 0 2 I ...
4
votes
1answer
1k views

Unable to mount a second hard drive in Ubuntu Server

I am adding a second drive to my Ubuntu Server. It was previously in a FreeNas system, but I got rid of the XFS partition and created an ext4 partition (in an older Ubuntu system). I then backed up ...
4
votes
2answers
757 views

Are there any issues using 2TB hard drives with 4k sectors

I'm thinking of purchasing a 2TB hard drive (probably a Seagate F4), but I've read reports of Linux not being compatible with 4k sectors on these drives. Do I have to do anything specific when I ...
10
votes
1answer
4k views

Using a LVM partition as a Virtualbox drive

Is it possible to use a LVM partition as a Virtualbox disk? I can't find any option to use a device as a Virtualbox disk, only disk images.
3
votes
1answer
14k views

EXT4-fs (sdc): VFS: Can't find ext4 filesystem

In short, this is where I found the best answers to my problem with my disks: https://help.ubuntu.com/community/DataRecovery During Fedora 15 installation, I added all my 3 drives to be mounted on ...
3
votes
4answers
4k views

External hard drive fails to mount

I have an external 2.5" 1TB Samsung hard drive, and it fails mount. Here's what palimpsest says about it: It's even able to do a benchmark on it: When I try to mount it normally, it fails: $ ...
1
vote
3answers
2k views

How to partition my hard-drive to be used for dual OS?

I'm using HP G42 laptop with 320GB hard-drive and 4 GB memory. I'm pretty sure that, it can be used for dual OS(Windows 7 & fedora) Currently, I'm using only Windows 7, but, I need to install ...
-1
votes
3answers
105 views

Does PGPDesktop supports OpenBSD or e.g. Fedora?

Does PGPDesktop support OpenBSD or e.g. Fedora, or can I only encrypt my whole hard drive when I use Windows?
3
votes
1answer
908 views

System Backup in Fedora 14

Does anyone know how I can backup an entire system, such that if the disk drive failed, I could quickly restore the backup onto another disk? I'm running Fedora 14.
12
votes
7answers
5k views

What's the best way to format a HDD in Linux in order to leave no trace?

I'm running Debian and need a way to format the entire hdd in order to not leave any trace on it because I want to donate it to a friend. So what will be the best way in order to format it? If I ...
2
votes
1answer
3k views

How to troubleshoot udev not creating /dev/hda3 on gentoo boot?

My old gentoo laptop seem to have an issue with udev probably due to me updating software using emerge, upgrading udev+kernel, getting some messages "do these things after upgrading udev/kernel" and ...
1
vote
2answers
527 views

Getting “A hard disk may be failing” on startup

I keep getting this error message each time I start GNOME, even though I created a new partition table on this drive, I formatted all the partitions, and created them again, and this just won't go ...
4
votes
2answers
2k views

Hight iowait while the wMB/s is low

I was indexing a MySQL table. It makes a high load on that computer. It seems due to a high iowait. But it also shows that the wMB/s is only 2.87. Isn't even a common SATA HDD able to handle more ...
52
votes
9answers
27k views

How do I know if dd is still working?

I've not used dd all that much, but so far it's not failed me yet. Right now, I've had a dd going for over 12 hours - I'm writing an image back to the disk it came from - and I'm getting a little ...
5
votes
3answers
579 views

What would happen if a hard drive failed while the Linux kernel was running?

I've always been curious of what would happen if a hard drive failed while the Linux kernel was running. Since the kernel image itself is loaded completely into RAM, I don't imagine there would be any ...
7
votes
5answers
5k views

Backup whole hard disk Linux

I am looking for a method to backup a whole disk in case something is screwed up... I don't even know what to install on some special devices of the server, and every time it is not the same. ...
5
votes
1answer
323 views

Is it worth using vdmfec for backups to external SATA/IDE hard drives?

I have some SATA/IDE hard drive enclosures that I use for backups. The drives for formatted with VFAT, since I need to be able to share them with Windows and OS/X machines. The backup scripts pipe ...
2
votes
2answers
2k views

What command do I use to spin up a “power up in standby” drive?

I have 8 drives in my server connected via PATA. The drives are set for no-spin via jumpers on the drive. hdparm -I says powers-up in standby; SET FEATURES subcmd spins-up What command do I use ...
5
votes
2answers
1k views

Diskless workstations

For various reasons I need a setup with one server, and two diskless workstations. The workstations are to be "fat clients", which means I want to enable them to use their own CPU, memory, etc, for ...
1
vote
1answer
808 views

Ubuntu 10.10 installed from windows 7: how to expand drive?

I'm new to Linux. I've installed Ubuntu 10.10 from Windows 7. It's not in Virtual PC, it is independent. It uses a virtual drive in c:, I have chosen it to be 10 Gb. Now I want to increase the size ...
2
votes
1answer
526 views

Creating an extended partition

I'm trying to create an extended partition. In GParted, I shrunk the size of the existing partition and now want to create a new EXTENDED partition in the free, unallocated space. GParted only lets me ...
7
votes
2answers
1k views

How to time grep commands accurately?

I want to compare the speed of these two commands: grep pattern1 files* grep pattern2 files* Unfortunately, the first grep reads much of files* into memory buffers, so the second grep runs ...
11
votes
1answer
929 views

What is the difference between “extended” partition and “logical” partition

What is the difference between "extended" partitions and "logical" partitions on my hard disk? What's the need for each? I am using Linux
1
vote
0answers
162 views

cdrdao is installed, but Brasero doesn't think so [closed]

When I try to copy CD to image, Brasero tells me that cdrdao isn't installed. However I reinstalled cdrdao and Brasero, but the error is still there. [system] Ubuntu Lucid (10.04)
4
votes
3answers
372 views

What would be a good choice for an elastic file system (for adding storage at a later date)?

I'm currently running a Debian 6.0 server with EXT3, but I'd like to move over to Arch. It's being used as a file server right now with a 1TB drive in it (of which 650GB in it is used). What I'd like ...
1
vote
2answers
314 views

Why is badblocks segfaulting?

I am trying to check a mounted partition to see if the drive has errors: [root@virtuality ~]# /sbin/badblocks -v /dev/sdb1 Segmentation fault Uh oh. What does this mean? Why is badblocks ...
4
votes
1answer
139 views

Adding efficient storage to a laptop-based system

I've recently asked an as-yet-unanswered related question. My question here is a bit different: I want to know the best way to add storage to a laptop-based system without sacrificing power ...
11
votes
3answers
954 views

saving data from a failing drive

An external 3½" HDD seems to be in danger of failing — it's making ticking sounds when idle. I've acquired a replacement drive, and want to know the best strategy to get the data off of the dubious ...
6
votes
3answers
6k views

Prevent a USB external hard drive from sleeping

Does anyone know if there is an elegant way to tell an external usb drive not to spin down after a period of inactivity? I've seen cron based solutions that write a file every minute, but nothing ...