A hard disk drive (or HDD) is a non-volatile, random access device for storing digital data.

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Dispose or Recycle Hard Drive

I have 3 old 3.5" internal hard drives sitting gathering dust at the moment. 2 are SATA, and one IDE. I want to either start putting them to use, or dispose of them to clear up some space. What is ...
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4answers
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How can I force an internal hard drive to power on or off when I want?

Obviously there are power management settings which Windows uses to determine when to power a hard drive off, and when to power it back on again. Powered down I assume doesn't mean absolute zero ...
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7answers
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How much does a gigabyte worth of data physically weigh on a hard disk? [closed]

What is the physical weight of one gigabyte of memory/storage? Lets say this is on a hard disk. What is the weight associated with the atoms that are actually storing the data on the disk? How has ...
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6answers
8k views

How to connect multiple HDDs to a computer?

What is the best and most efficient way to connect 10 - 20 SATA HDDs to a home computer? I mean an ordinary motherboard supporting 2 connections for SATA HDDs. The purpose of this assembly is to ...
14
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7answers
10k views

Does storage capacity affect hard drive performance?

I read somewhere that smaller (in terms of disk space) hard drives are faster than equivalent but bigger hard drives. How true is this? In other words, say I have two hard drives. Both are of the ...
14
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6answers
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Power consumption: SSD vs HDD

In questions like this one and in websites everywhere it's noted that SSDs use much less power than HDDs... usually citing ~2 W vs ~6 W for HDDs, my question (and sorry if its stupid just need to be ...
14
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3answers
4k views

Is it slower to copy two files at the same time than to copy one after the other? [duplicate]

My boss was saying it takes longer to copy two files at the same time than doing one and then the other because the hard drive has to keep switching the head between the two locations on disk. Is this ...
14
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5answers
3k views

Why is the effective hard drive size lower than the actual size?

I just got a new Lenovo Laptop which has been installed with Windows 7 and is supposed to have 250 GB hard disk. Windows 7 reports that the hard disk drive has two parts: 221 GB C: and 9.76 GB ...
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4answers
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HDD vs SSD durability [closed]

I heard that SSD are less durable than HDD. Is it true ?
14
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8answers
65k views

Fix bad blocks on Mac hard disk

I have a hard disk that I scanned with TechTool and it reports one bad block. As far as I can tell, TechTool only scans and reports a failure. It doesn't fix anything. Back in the day, Norton Disk ...
14
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2answers
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What are the differences between MBR vs GPT vs any other partition scheme?

Can anyone tell me what the main differences between i.e. MBR vs GPT or any other partition scheme are? Why would one choose one over the other? I am not an expert but from new release of Mac OS X ...
14
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2answers
23k views

How do I delete a VM in VirtualBox when the hard drive the VDI file was on is deleted?

I'm using VirtualBox hosted on Windows 7 and the physical hard drive that one of my VM's VDI file was on got completely borked and no longer exists. The problem is that now I can delete neither ...
14
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5answers
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Can I trust a hard drive that has had to reallocate sectors?

I ran this HD utility called CrystalDiskInfo that displays some of the S.M.A.R.T. information on my drives. It is displaying a "Caution" warning on one of my drives because its "Reallocated Sectors ...
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3answers
4k views

Why does HDD activity slow the whole System down (on Windows 7)?

If I copy a large amount of data from on drive to another (physical) drive my whole system is running slow. I am using Windows 7 64bit version on an Intel Core 2 Duo 3 GHz. This is the situation: ...
14
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4answers
6k views

What directories in a Windows 7 SSD install would you link/junction to an HDD?

I'm planning on installing an SSD/HDD combination with the SSD as my boot (Windows 7 x64) drive, and a spinning HDD as a storage drive. Are there any log files in particular best suited to a mklink ...
14
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0answers
2k views

How long will an unused hard drive store its memory? [duplicate]

Possible Duplicate: How much time until an unused hard drive loses its data? I have a broken laptop, and it's the motherboards fault that it can't turn its power on. The laptop has been ...
13
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6answers
5k views

Can a 'system image' be restored to a drive with a different storage capacity?

I have a family member who complains that her laptop is slow. I checked the laptop over and indeed, it was slow, so I looked into what was using the most hardware, and found that the hard drive was at ...
13
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6answers
32k views

Running Spinrite from a USB drive?

I need to use SpinRite on my notebook which has no CD-ROM. How can I install and run SpinRite from a USB thumbdrive? Such that I could boot the notebook up with a thumbdrive and start SpinRite. Are ...
13
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3answers
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How do I unmap a disconnected network drive in Windows 7?

The drive is disconnected, and I'm off the network. How do I unmap the drive? This seems like it should be a simple procedure, but I'm missing something. My Google-fu is weak today...
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5answers
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How to access S.M.A.R.T. values when using RAID and Intel Matrix Storage?

We have a RAID 5 array using Intel Matrix Storage (i.e. a motherboard based RAID). One of the hard drives has started to make a grinding noise, and the array is currently rebuilding. We'd like to ...
13
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8answers
31k views

Why does my hard drive LED light blink every second?

The light blinks faintly about once a second. It is slowly driving me insane. How do I find out which program is causing this, so I can disable it? Acer 5274 laptop/core i3 Windows 7 Home Premium ...
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2answers
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Hybrid Hard Drives, how do they work?

I was reading yesterday's Jeff Atwood blog post on Revisiting SSD and I first heard about hybrid hard drives: a HD that has a small SSD portion (let's say 4GB) and the rest is a regular spinning hard ...
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2answers
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How to assign permanent drive letters to removable USB hard drives?

I have scripts that expect specific drive letters for hard drives. Windows sometimes assigns the different drive letters (e.g. I expected my Maxtor drive to be E: but it's now F:, therefore my ...
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4answers
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Can I install a laptop 2.5" SATA drive on a desktop without any adapters?

My girlfriend's computer has had the disk so I'm going to reinstall the operating system. However, before I do this I need to get all the data onto another machine. As the laptop won't stay on long ...
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2answers
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Use physical harddisk in Virtual Box

Using Virtual Box, how can I install an OS to a secondary, physical disk, and boot it in both (at separate times) Virtual Box, and as a typical secondary OS install?
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2answers
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What determines the order of hard drives?

I've got three hard drives installed in my PC, though the drive order shown in Windows doesn't reflect the order in which the drives are installed: SATA 1: 120gb drive SATA 2: 320gb drive SATA 3: ...
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2answers
18k views

How to increase a virtualbox' disk size?

The title says it all. I created the disk and now I would like to increase its size. I know I could add a new one, but I don't want to. The guest os in question is Ubuntu 11.04
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4answers
1k views

Why does OS X insist on spinning up all external drives when loading a file from the local drive?

Why does OS X insist on spinning up all the attached external drives (firewire, usb) when loading a file from the local (internal) drive? It's driving me insane that I have to wait for 3 attached ...
13
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1answer
783 views

Can prematurely powering down a computer cause bad sectors in a hard drive?

Q1: Can forcibly powering off a PC without using the built-in shutdown/reboot functions, cause a HDD to accumulate bad sectors? Whether it be the result of BSODs, lockups, crashes, etc. Q2: If so, ...
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4answers
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which file type to install my virtual hard disk in while installing a new machine on virtualbox?

I got some options like VHD, VMDK, HDD, and VDI is there a file type that is most commonly used and is supported by most other virtual disk software?
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10answers
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Looking for an actual experience of RAID 5 2 drive failure? [closed]

I'm wondering if anyone has any personal experience of RAID 5 2 drive failure with large drives? As I understand it, the theory is that with large 1-2TB drives, if one drive fails in the raid set, it ...
12
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6answers
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Is my hard disk failing?

I have a problem with my computer: I'm using Windows 7 x64, and when I try to acces the Downloads folder, it takes a long time. After waiting for half a minute or more, I can open it, see the ...
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4answers
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Dynamic vs Basic Disk - Hard Drives

I have bought a removable hard drive enclosure and a 1TB hard drive to fit in it. Its pretty cool; it has a little handle at the front of the caddy that allows you to take out the hard drive and ...
12
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4answers
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Tool to copy files of HDD with bad sectors

I have an external HDD that is starting to fail, it has some bad sectors. It's a 1TB fujitsu siemens case with a western digital HDD inside. Eventually I will backup the whole drive with some ...
12
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4answers
1k views

Are External Harddrives more prone to failure than Internal drives? [closed]

In ten years, across several different machines, different companies, and different operating systems I've noticed a trend that External Harddrives die long before their internal counterparts. What's ...
12
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2answers
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Why are most of 2TB hard disks released 5400 RPM?

Most of 1TB Hard disks run as 7200 RPM recently. But why 2TB is not? Few disks have a 7200 rpm specification. Is there a technical reason?
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4answers
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4K sectors transition: Why are hard drives moving to 4096 byte sectors, vs. 512 byte sectors?

I've noticed that some Western Digital hard drives are now sporting 4K sectors, that is, the sectors are larger: 4096 bytes vs. the long-standing standard of 512 bytes. So: What's the big deal with ...
12
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5answers
927 views

How can I render an SSD permanently inoperable with no chance of data recovery?

On platter drives, when it is time to dispose of them, a degaussing takes care of the data and in most cases erases the factory pre-recorded servo tracks rendering the drive useless. What does one do ...
12
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3answers
3k views

Do SSD hybrid drives perform better than HDD + ReadyBoost flash?

Seagate has released a product called the Momentus XT Solid State Hybrid Drive. This looks exactly like what Windows ReadyBoost attempts to do with software at the OS level: Pairing the benefits of a ...
12
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3answers
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What do the different colours of the SATA ports on my motherboard mean?

I've bought a new hard drive for my system, and my motherboard (an ASUS M2A VM HDMI) appears to have two black and two red SATA ports, with the existing hard drive and DVD drive plugged into the red ...
12
votes
1answer
555 views

Power Options: Turn off harddrive. Effective or dangerous?

I keep a PC running 24x7 as it handles several light (processor-wise and disk-wise) tasks and acts as a jumping point into my network from outside. I'd like to keep it as energy efficient as possible. ...
12
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4answers
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How to increase the disk cache of Windows 7

Under Windows 7 (64 bit), I'm reading through 9000 moderately sized files. In total, there is more than 200 MB of data. Using Java (JDK 1.6.21) I'm iterating over the files. The first 1400 or so go ...
12
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3answers
14k views

Can I connect a SATA hard drive to to my PC, while it is running?

I am trying to do a hard drive recovery, and want to know if I unplug and plug the hard drive back in, while the PC is on (running Windows 7). This is a secondary hard drive, not the primary one. I ...
11
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3answers
31k views

Chkdsk Questions

Recently in running chkdsk /r on my system drive (platter drive, Windows 7 Ultimate 64bit) I've gotten back "4 EA records processed" and "76 reparse records processed". Am I right in assuming these ...
11
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5answers
652 views

is it possible to estimate the death time of a hdd?

is it possible to test a hard disk and predict when it will die on you (roughly)?
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4answers
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How does a hard drive retain information after being formatted?

Companies try to zero-fill their hard drives several times when they decommission them, why? Surely one pass of zero-fill would do the job exactly as they need. I understand the reasoning for the ...
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6answers
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Imaging new hard drive in Windows 7 laptop?

I'm upgrading my Windows 7 laptop to a new hard drive. How can I clone or image the old hard drive over to the new hard drive, so that it looks like nothing has changed (other than the new hard ...
11
votes
4answers
22k views

What is the safe temperature limit for a consumer SATA hard drive?

Background My personal desktop system at home has 5 SATA drives racked up inside. Recently my system started failing in odd ways like random kernel panics and I eventually traced it to random ...
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7answers
7k views

Firefox writes megabytes of data per minute to disk, why?

iotop -a (accumulated I/O) on Linux shows after about 10 min. of browsing Internet: Total DISK READ: 0.00 B/s | Total DISK WRITE: 0.00 B/s TID PRIO USER DISK READ ...
11
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5answers
9k views

Does low disk space affect SSD performance?

I was wondering if having less than 5-10GB of free space on an SSD would affect performance. Is it specific to SSD or is it more of an operating system aspect? For example, on an Intel X-25 G2 that ...