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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7k views

What NOT to put on an SSD?

I bought an SSD and I am going to set up my desktop system with a completely fresh Linux installation. SSDs are known to be fast, but they have a disadvantage: The number of writes (per block?) is ...
5
votes
3answers
44k views

How to repair a corrupted HFS+ partition from a damaged hard-disk?

I have a friend's Mac OS X disk that comes with an HFS+ partition. I am supposed to recover the personal data from this disk, and I'm not yet sure if the filesystem is corrupted or the disk is dying). ...
11
votes
3answers
2k 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 ...
85
votes
13answers
65k 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 ...
90
votes
12answers
369k views

How do I find out what hard disks are in the system?

I need to know what hard disks are available, including ones that aren't mounted and possibly aren't formatted. I can't find them in dmesg or /var/log/messages (too much to scroll through). I'm hoping ...
23
votes
3answers
1k 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 ...
7
votes
5answers
7k views

How to clone a NTFS partition (WinXP) from a damaged disk to a new one?

I'm an Italian Windows programmer. I know almost nothing of Linux, so please be patient if the question is dumb and pardon my bad english. I need to clone a NTFS partition from a damaged, near to die ...
19
votes
3answers
52k views

How can I benchmark my HDD?

I've seen commands to benchmark one's HDD such as this using dd: $ time sh -c "dd if=/dev/zero of=ddfile bs=8k count=250000 && sync" Are there better methods to do so than this?
22
votes
5answers
23k views

Differences between volume, partition and drive

What do these terms mean exactly? partition volume drive On Windows, one may say drive C: or partition C:. On Linux I'm not sure what should be used for partitions because they don't have a name.
12
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8answers
9k 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: ...
11
votes
1answer
2k 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
4
votes
3answers
34k views

Recovering data from a damaged hard-drive: the “freezer trick”

I'm currently in the business of recovering data from a damaged---and dying---hard-drive (check this question for background info). The drive was dropped while the system was running; and while ...
25
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5answers
25k views

GPT or MBR: How do I know?

How can I tell whether my harddrive is laid out using an MBR or GPT format?
6
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5answers
5k views

How can I run an hdparm command after boot and resume on Fedora 19?

I bought a new HD(WD5000BPVT) which unfortunately tries to sleep every 5-8 seconds. Not only is the clicking noise quite audible, the 1-second spinup time adds very noticeable latency in day-to-day ...
14
votes
7answers
9k 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 ...
7
votes
5answers
6k 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
2answers
4k views

Names for ATA and SATA disks in Linux

Assume that we have two disks, one master SATA and one master ATA. How will they show up in /dev?
2
votes
2answers
792 views

Can I recover from a system disk error on Ubuntu Linux?

I got a strange looking warning message in Windows Vista about a potential hard disk failure. I say strange because I have never in my life seen that type of warning in Windows. It suggested that I ...
3
votes
1answer
493 views

View physical location of a file/directory on a hard disk

Is there any Linux program which offers the same (or some of the) functionality of Sysinternals DiskView, especially being able to view to physical location of a file on a hard disk? DiskView URL: ...
2
votes
3answers
373 views

Why creating partitions in linux is a good solution for easy recovery?

I have heard if you don't make partitions in linux, it is so hard to recover the data. And if you make few partitions it would be easy to recover the data. for example if you make /par1 /part2 /part3 ...
2
votes
4answers
553 views

USB 500GB external drive mounted with undetermined permissions, missing data

Note: This situation is evolving. Please see the output at the end of this question for the current situation. I'm using Linux Mint 14. Recently, I repartitioned one of my hard drives, and I backed ...
3
votes
0answers
69 views

Which 'smartctl -d' option should I use on this hard-disk: 'scsi' or 'ata'? [duplicate]

On the back of How to repair a corrupted HFS+ partition?, I have separate question. I'd like to run smartctl tests on a hard disk, but I'm not sure which option I should use to correctly initialize ...
3
votes
2answers
3k 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 ...
2
votes
2answers
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 ...
1
vote
3answers
392 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 ...
0
votes
2answers
926 views

Issue with bad sectors on a laptop hard drive

I had Windows installed on my laptop and suddenly one morning Windows couldn't start. Then I tried after formatting and for once it became possible. I also installed Ubuntu as logical drive (deleted ...
52
votes
6answers
47k views

How to know if a disk is an SSD or an HDD

I want to know whether a disk is a solid-state drive or hard disk. lshw is not installed. I do yum install lshw and it says there is no package named lshw. I do not know which version of ...
14
votes
3answers
13k 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 ...
9
votes
3answers
29k views

Full DD copy from hdd to hdd

UPDATE: 2 This seems a lot better than before (Thanks to Groxxda for the suggestions): sudo dd if=/dev/sdb bs=128K | pv -s 3000G | sudo dd of=/dev/sdc bs=128K ETA is about 9 hours for 3TB, whereas ...
14
votes
4answers
7k 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 ...
11
votes
1answer
6k 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.
8
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 ...
9
votes
6answers
26k views

Harddisk serial number from terminal?

I have multiple harddisks which get connected to my server and I'm not sure which one is what in the view of sdXY . If I can see the serial numbers of my harddisks from terminal, I can easily identify ...
7
votes
5answers
975 views

Can I see what HDD I have installed? [duplicate]

I use lspci for pci devices and lsusb to list the usb hardware devices, is there something similar to list my SATA HDD model ?
6
votes
2answers
6k views

Is this ddrescue command doing anything?

In the course of trying to recover data from a failing hard drive, I am running the command ddrescue. The command has been running for 9 days, and I thought from the sound of disk activity that maybe ...
4
votes
5answers
5k 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 ...
4
votes
3answers
3k 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 ...
8
votes
3answers
1k views

Harddrive I/O per Pid

is there any way to see the disk I/O per pid/process ? Monitorix shows me the following and correct me if I´m wrong, but it looks like that the harddrive is slowing down the whole system: UPDATE #1 ...
7
votes
2answers
1k views

Reduce bad block retry / wait times in Ubuntu

How can I reduce the IO wait time and retry times so that the OS doesn't continually try to write to a failing drive? I have an system that I use to make copies of demo content that gets loaned out ...
5
votes
2answers
8k 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 ...
3
votes
2answers
115 views

Mount hard drives in the same order in debian

How can I mount the hard drives always on the same /dev/sd? node? For example, how can I make the hard drive with the UUID xyz to be mounted always on the node dev/sda? The reason why I want to do ...
3
votes
2answers
1k views

dumpe2fs - lifetime writes - what is it

For example, if I run: sudo dumpe2fs /dev/sda1 I get detailed information about the partition. I'm confused about this part, Lifetime writes, returns the following for my boot partition: Lifetime ...
3
votes
1answer
5k views

recovery data from RAID and disk failure (Linux)

Some background A friend of mine was using in his office a NAS Buffalo-LS-WVL with two disks of 1TB each. It seems that the two disks were mounted as raid 1, but, as you will read, probably they have ...
2
votes
1answer
413 views

LVM keeping harddisk awake?

I have a Lenovo W530 running Arch with kernel 3.79 (for bumblebee) and laptop-mode is configured properly and running. It has one SSD (sdb) and one harddisk (sdb). The sdb disk has two lvm-volumes: ...
1
vote
0answers
22 views

Restoring VG configuration from recovered drive

Had to reinstall CentOS on a server with three RAID 1 arrays. I installed the OS on sda (300g), and left sdb and sdc alone (they were not formatted or otherwise fiddled with). The OS is up but ...
1
vote
2answers
99 views

Partition table-less HDD [duplicate]

Just this morning, I accidentally created a hdd filesystem without a partition table. I didn't even know it was possible but it happened. Now the issue is to undo it or leave it alone. For this ...
1
vote
2answers
2k views

Use MegaCLI to add a new hard disk to existing RAID0 in Linux

There are two hard disks on my machine, but after installing the operating system, it uses only one hard disk to build RAID0. After installing MegaCLI, I used: MegaCli64 -pdlist -aALL to display ...
1
vote
1answer
1k views

How can I create an encrypted, file-system–agnostic, mountable volume?

At work, we have an iMac (running OS X) that shares a partitioned hard drive over the network. I'd like to back up to my partition from my Linux machine. I've attempted connecting via cifs, then ...
1
vote
3answers
1k views

How to mount multiple partitions

Is there a way to mount multiple partitions, or even all partitions, of a disk with a single command in Linux? Is there, perhaps, an option that the mount command accepts that would facilitate this? ...
6
votes
4answers
5k views

Finding out what is spinning up harddrive

I am the owner of a NAS, running some Linux distribution. It comes with a web administration frontend, where I can manage several services, user rights and also when it should go to sleep. My problem ...