A hard drive is a device for permanent or long-term storage in computers.

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Does Time Machine need a “clean drive”, or can I use an old hard disk

I want to use Time Machine on my Mountain Lion. I have 1TB external HDD I use for storing various stuff. The thing is I selected the drive for Time Machine to work on but nowhere it is mentioned ...
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4answers
2k views

Why does RAID 1 “Mirroring not provide performance improvements”?

I have always used Software RAIDs, either Apple-provided, or via SoftRAID, etc. I am about to re-zhuzh my arrays and decided to do a little research beforehand… and On Apple's site, there is a ...
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1answer
981 views

Internal drive on MacBook won't appear on desktop

Why doesn't internal drive appear on desktop after a fresh install of Snow Leopard 10.6.8?
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I think I messed up the Fusion Drive on my 1TB iMac (with BootCamp)

this is a somewhat similar post to this one (Can't create partition on free space with Disk Utility) but not quite... It started with me creating a BootCamp partition (around 145 GB) for Windows ...
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4answers
313 views

How do I temporarily relocate my Time Machine backup files

I have a 1TB WD My Passport external hard drive that I've been using for Time Machine backups. I recently had an issue with it where I can't save to it anymore because it was corrupted. The way to fix ...
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Why does my 3TB Seagate HD keep formatting as a Logical Volume Group

This is really annoying. I have a brand new Seagate 3TB 7200 RPM hard drive that I am trying to format/partition in Disk Utility. Every time I change any settings or erase the drive, it changes it to ...
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2answers
4k views

Should I stop using my Mac while the hard disk is being cloned?

As one of my backup solutions, I use an app (SuperDuper!, if it makes any difference) to make a clone of my Mac at the same time every evening. Sometimes I am still working at that time. What I want ...
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3answers
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Is USB 3.0 overkill for Time Machine hard drive?

I have two 500 Gb hard drives. One is USB 2.0, the other is USB 3.0. My intention is to use one of these hard drives for Time Machine, and the other for storing media files on (mp3s, mp4s mostly). ...
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1answer
2k views

Large difference in reported free disk space

I have a strange discrepancy in the amount of free disk space that's being reported. The finder says: My iStat Menus says: Which is the same as df -h reports: remco@Prosperpine ~ $ df -h ...
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15k views

Recovering data off of a dead hard drive

My hard drive died in my macbook and it no longer will start up. It will not mount in an external enclosure but disk utility is still reading that the hard drive is there, and I tried to repair disk ...
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1answer
4k views

Can I move Applications to another partition?

My Startup disk partition is just 20 GB and I'm running out of space. What's the safe way to transfer Applications folder to the other partition? Can I just move all apps into a folder on the other ...
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1answer
235 views

Is it safe for the hard disk drive to operate while MacBook Pro is positioned vertically?

There is a nice designed product: Twelve South BookArc. You can save some space and increase wow-factor of your workspace a bit. But is it safe for HDD to operate a Macbook when it is not parallel to ...
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3answers
33k views

OS X Yosemite installation error: File system verify or repair failed

My Mac has been running fine until I decided to upgrade to OS X 10.10, Yosemite. When it is installing I get the message: File system verify or repair failed. I clicked the restart option to ...
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1answer
96 views

How do I get rid of errors for disconnected networked drives?

Every time I log into OSX 10.9.4 (and several slightly older versions since I've been updating) I get several pop-ups asking me to connect to a remote/networked drive that I've previously configured, ...
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4answers
526 views

Upgrading a 2010 Macbook pro

I have a 17" Macbook Pro, mid 2010, with a 2.66 GHz core i7. It has 4GB of memory and a 500 GB sata hard drive (5400 rpm). With this specification, if I have to update one and only one part of my ...
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2answers
712 views

Make SCSI Appear as Internal Hard Drive

I have the HighPoint RocketRAID 2720SGL Raid card running on my Mac and it shows as an external drive. I would like to make it appear as an internal drive. Is this possible? From: To: Here ...
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4answers
109 views

How to find where files reside on a partition

I'm trying to use Bootcamp to install a Windows partition. But it gives this error message. I remember there was a program that let you see where all the files are on the partition and how much ...
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1answer
5k views

How to coerce Lion Time Machine into offering backup history migration?

This article describes a feature I heard about from multiple sources about an automagic backup migration process that Lion will do for you. Essentially, when migrating to a new machine, you can ...
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2answers
351 views

SSD instead of DVD temperature

just installed Intel 320 instead of DVD in Macbook MC516LL. Does old DVD place is equivalent to standard HDD place in Macbook from temperature (thermal) perspective?
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1answer
42 views

MacBook dual drive is killing hard disks

Towards the end of last year I decided to remove the CD drive on my late-2007 MacBook and replace it with a 2nd hard drive (using an aftermarket 'caddy'). Several months in, my 1 TB WD Blue (2nd) ...
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5answers
114 views

External Hard Drive size

I'm using a 13-inch 2013 macbook air with 4gb memory, and after a near disaster with a spilt drink I've realised I need to start backing it up. I don't know what size external hard drive I need ...
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2answers
67 views

SSD upgrade for mid 2012 MBP

I recently started getting performance issues with my MBP while running apps like Xcode and Eclipse. A quick diagnostic of the system showed that it thrashed over 458k times. Vendor Specific SMART ...
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2answers
1k views

How do I transfer a file from a guest account on a MacBook Air?

I'm logged into the guest account of a borrowed MacBook Air which is running OS X Version 10.9.2 and I've been trying to transfer a 2.19GB video file to an admin account, a USB or external hard drive, ...
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1answer
13k views

Can I boot Mac from an external hard drive (internal hard drive+hard drive closure)

Model: Macbook Pro 2010 mid OS: OS X 10.9 Hard Drive: WD5000BPKT 500GB For some reason I need to change my perfectly working internal bootable drive to external bootable drive. I took out my ...
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1answer
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Partition/Volume grayed out but full read/write access

i have a Mac Server and a partition only for files. The volume is grayed out in the Finder sidebar, but if i go to the folder via CMD + G (go to folder) and type "/Volumes/Server_Daten" the volume ...
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1answer
113 views

Does using “rm” command cause journaling corruption?

Some time ago I had some problems with my Mac drive, so I went to the recovery partition and used Disk Utility to check for problems. It reported a huge discrepancy between the journaled free blocks ...
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857 views

In Disk Utility, what advantages do “read/write disk image”s have over “sparse bundle disk image”s?

If I want a read/write disk image, then aren't sparse bundle disk images always the way to go? They start at 0 kb in size, and grow to accommodate whatever you add to them, and if you delete stuff, ...
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1answer
825 views

Fusion Drive: free space on SSD

Is there a possibility to find out how much storage is free on a SSD of a Fusion Drive disk (SSD + HDD as a logical device)? The structure I use is this one here: $ diskutil list /dev/disk0 #: ...
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2answers
2k views

Mac Hard Drive Testing Tools and SMART Analysis

How good is SMART (Self Monitoring Analysis and Reporting Technology) for really finding and predicting drive problems for regular hard drives and now, for SSDs. From what I understand, different ...
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3answers
5k views

Best file system for an external hard drive sharing between OS X and Windows

I would like to buy an external hard drive that I'll use on Mac OS X and on Windows, but I don't know the best file system for it (reading and writing on the both system). I know I can used FAT32 ...
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1answer
2k views

prevent second hard-drive from spinning up after standby

I have a MacBook Pro with two harddrives, an SSD in the main slot and a larger, normal drive in place of the superdrive. Because of power consumption and noise I managed to get my Mac to not ...
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6answers
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How can I test if my hard drive is going bad?

I've looked over similar questions and searched the internet to try to find symptoms of a bad hard drive, but I haven't found anything that seems to be related to my problem. I have a late 2008 15" ...
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Can I install OS X lion on a disk that is OS X Extended Journaled encrypted?

Just wondering if I can, using Disk Utility, format the hard drive such that it is OS X Extended (HFS+) Journaled encrypted. Will Lion be able to install on that disk?
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How much will adding an extra hard drive to my MacBook Pro affect battery performance?

I have a current MacBook Pro 15" i7 2.2Ghz with a 500GB 7200RPM (default) hard drive. I am thinking of replacing both the current hard drive and the superdrive with two Seagate Momentus Hybrid 500 GB ...
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4answers
2k views

How can I add some SSD goodness to my MBP?

I have a decently modern (late-2010) Macbook Pro, with a 7200 RPM 500GB HD. I need this much space, but I'd like to have an SSD for compiling code, running the OS, and running games. Is there any way ...
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1answer
547 views

Is it possible to use Time Machine on a shared USB Hardrive?

I've a iMac with an external HD derserved to Time Machine. I also have a MacBookPro. Is it possible to make this config : Share the disk on the iMac so that the MBP sees it on the network Ask Time ...
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2answers
59 views

Bulge in MacBook Pro near Hard drive

I have noticed in that past 24 hours that two rigid and straight "lines" have developed as bulges on my Mid 2010 MacBook Pro 15 inch. They are noticeable when looking at it in the light and you can ...
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1answer
505 views

How to empty MobileBackups.trash content

I noticed that OSX reports a wrong disk space amount, reporting that "Other" space is near to 170Gb. Digging into the issue here "Huge inconsistency in disk space measurement, missing 50% of the ...
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2answers
157 views

2012 MacMini HDD died while installing Win 10 Tech Preview

I have a problem with a 2012 MacMini. diskutil list shows an internal 500 GB 5400 rpm drive as having 0 Bytes. It also states that it is unknown. Would TestDisk be able to reformat the drive? Disk ...
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1answer
113 views

Interesting partition Map with missing HD space

I have the latest generation Macbook Pro running Yosemite, I bought this computer used I don't know if the last person attempted to install linux or what the story is but I believe my partition map is ...
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2answers
5k views

Should I put the SSD in the Optical or Main Bay when replacing Optical Drive?

I have 2010 MBP. Wanted to put SSD in optical bay (and use it as main boot drive) because main bay has SMS (motion detection) that HDD would use. The only problem is that optical bay in my computer ...
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1answer
4k views

backing up an OSX image to an NTFS drive?

I would like to make an image of my entire OSX install, so that I may restore to it if necessary. I'd LOVE to have incremental backups, so bonus points if anyone can figure out how I can do this! ...
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1answer
3k views

Disk Utility: Incorrect number of file hard links

I'm running Mountain Lion on my Mid 2009 MBP. Recently(for last few months) it's acting really slow. Simplest actions are taking forever to perform. So I verified disk using the Disk Utility and it ...
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2answers
5k views

MacBook SSD replacement — sudden motion shock sensor in optical bay?

When looking to upgrade a MacBook Pro with a solid state drive (SSD), one option is to: First, install the SSD instead of the spinning hard disk drive (HDD). Then, install the HDD instead of the ...
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1answer
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Is it a good idea to seal off the optical drive bay after installing a second HDD?

When installing a HDD instead of the SuperDrive: Does the bracket, which holds the HDD, seal off the optical drive slot in the unibody? If not, it seems that debris and dust could get in. (I guess ...
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176 views

iBook G4 opening procedure (for hard disk replacement)

I am about to replace the hard disk of an iBook G4 (a 12" 1.33 GHz model) with a SSD. The guides I find online, such as this one, describe a rather long procedure where both the bottom and top covers ...
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2answers
944 views

Why is Outlook 2011 constantly writing to my hard disk?

I recently installed a hard disk write monitoring program (MenuMeters), and for some reason it was reporting that my drive is constantly being written to. By closing programs one at a time, I've ...
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2answers
235 views

Occasional system hangups after upgrade to Lion: is it a disk or software problem?

I have an 13 inch MacBook unibody Alu (early 2009, before they started to be called MacBook Pro) that I use every day for many hours (it's my work and life computer). Few weeks ago within few days I ...
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1answer
63 views

Is there a way to monitor which disks are spun down in a Mac Pro?

I have an 2009 Mac Pro full of disks, most of them seldom used (boots on a SSD). Is there a way to see which disks are spun down at a given time (currently running 10.6.8)?
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RAM Disk gets unmounted when coming out of sleep

I have a script set up to create a RAM Disk at login. But I have now noticed that the RAM Disk (And sometimes other networked disks) get unmounted when I put the laptop to sleep and wake it up again. ...