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

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Getting rid of “The disk you inserted was not readable by this computer” message at startup

I have a couple of disks in Windows software mirroring RAID in my system, and when OS X (Mountain Lion) loads, the same message pops up (twice) each time: The disk you inserted was not readable by ...
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1answer
1k views

Trouble Mounting NTFS drive on OS X 10.9

Mounting NTFS drives works in OS X natively. Mounting drives with fstab is common and can be seen here and here and here. I was able to successfully do it with the following addition to my fstab. ...
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1answer
964 views

Macbook pro 2012 Lagging. Slow bootup - Amazing Hack!

I've left my Macbook pro to sleep with a lot of programs and memory used (probably lot of swap used as well) And when I've waken it up, it started to have 60 s lags then 5-10 seconds of ...
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1answer
89 views

How to ignore second hard drive

I have a second hard drive in my macbook pro that is bootable into my older os install after installing a new SSD with a clean build of OSX Mavericks. When booted into my SSD, I want my old drive to ...
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1answer
657 views

How to verify if the MacBook Pro HDD cable is faulty?

Is it possible that I take out the HDD cable and test it with multimeter to see if all wires are connected, etc? Is there a pin diagram for it? The problem: I have this MacBook Pro mid 2009, lat ...
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1answer
517 views

OS X works perfectly fine on external HD but extremely slow with HD on MBP

Things get weird when I replaced my HDD with an SSD since my MacBook Pro (Mid-2012) slowed down horribly. I get beachballs everything I did on my MBP and it was so painful. I thought it was because ...
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1answer
264 views

How to access the internal hard disk with full permissions?

My Mac does not start anymore. The hard disk is stranded :-( Macs and gravity are not good friends. When starting on a backup disk, I manage to see some contents of the internal disk Macintosh HD, ...
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2answers
303 views

Does hard disk continue to run while sleeping?

The question is pretty simple. I just wanted to know for sure but couldn't find an answer on google. Does the hard drive continue to "run" while the computer is asleep? I'd like to know if it does ...
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1answer
900 views

Customize external HDD spindown timeout?

It's possible to enable spinning down of mechanical hard drives using the "Put hard disks to sleep when possible" option in Energy Saver, and it's possible to customize the timeout period with sudo ...
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1answer
348 views

Are there hidden files taking up 10GB on my hard disk?

I was cleaning up my hard drive this morning, 128GB ssd in a macbook pro, and there seems to be about 10GB of data that isn't appearing in the exposed file system. I'm using the GUI interface with ...
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1answer
395 views

How can i recreate my Partition Table

What happened: While i was tinkering around with my bootcamp partition something went terribly wrong. end of story is, i have no partitions left in my partition table The current situation: i can ...
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1answer
947 views

Can't mount (Core Storage) encrypted volume anymore

I use the following setup: SSD: System Internal HDD: Data (Documents, Music, etc.) Both disks are encrypted via the Core Storage utility. It seems I can't mount the "Data" disk anymore. I wanted ...
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1answer
199 views

Trouble with my partitions

I have some trouble with my partitions on my Macbook Pro. I created 2 partitions. One named "Yo" where I have installed Yosemite release. Another one named "Save" where I put all the stuffs I need to ...
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1answer
406 views

Transfer Bootcamp over from a separate hard drive to a partition of a hard drive

I have a Macbook Pro with dual hard drives (1tb HD, and a 250gb SSD that I replaced the disk drive with). I have been using the regular HD for my mac and the SSD for my bootcamp. Recently, I found ...
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8answers
62k views

How to eject my external drive when my Mac refuses because of Spotlight?

I have plugged an external disk to my Mac. Now, I want to eject it. But my Mac stubbornly refuses and says that an application may be using the disk. I have not launched any app neither opened any ...
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1answer
347 views

Files missing after doing disk repair

I have an NTFS external disk, And I followed a stupid tutorial, it told me to repair my disk then I can delete the 'un-deletable' files in the NTFS external disk. However, When I done the ...
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1answer
590 views

Going in for an apple repair, do I need to remove my second hard drive for the superdrive?

The right fan on my mac stopped working, I have scheduled an appointment at the mac store genius bar (its still in warranty). I have installed a second hard drive in place of the super drive, and ...
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2answers
474 views

iMac HDD fan running full speed. What is wrong?

My iMac (27" Mid-2010) and the HDD fan is spinning full speed with a measured HDD temperature of 50 °C. I have removed the dust and dirt from inside and it is pretty clean. Nevertheless even when at ...
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1answer
112 views

External Storage Options for MBP non-retina

My system specs: late 2011 13 non-retina thunderbolt (1?) optical drive usb 2 sdxc @ 2.5 gt/s firewire 800 128gb ssd I am wrestling with a few options since I don't have USB3.0: USB 3 drive ...
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2answers
234 views

Sudden proliferation of 'Too many open files in system' errors. Can't do backup

My computer is showing signs of impending hard drive disaster. Time Machine recently killed all my backups and has not cooperated since. I tried backing up with Super Duper, but it quit after about a ...
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1answer
608 views

Can one mount a FileVault 2 encrypted drive from Windows?

I encrypted an external drive with FileVault 2. Now it would be great if I could access it from a Windows PC. Is this outright impossible? I found no definitive answer either way.
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1answer
56 views

Moving files from bad external harddrive [duplicate]

I use OSX mavericks. My external 1TB harddrive is partially unreadable. I want to salvage its content as much as possible. I have tried dd but it took almost a day, so I killed it, and it could not ...
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1answer
198 views

Why doesn't my MacBook recognize the original HD any longer?

I replaced the stock hd with a samsung ssd (840) about 18 months ago. It died last week. I tried putting the original HD back in and the computer won't recognize it. Even when I hold down the option ...
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1answer
486 views

unallocated space on disk0 under Mavericks

I have the same kind of issue than here : Create new partition in unallocated space with diskutil but on disk0 ! I don't know what to do anymore :( So i can't modify anything with gpt. I had Ubuntu ...
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2answers
73 views

Time Machine and storage questions

In researching Time Machine usage issues, I have come across other questions that might change the way I have always arranged my drives. Back in the 'olden days' when internal drives were ...
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3answers
4k views

Something's eating my disc space - Mac OS X [duplicate]

So something's swallowing about 800gb of disk space on my mac. I've ran Disk Inventory X and Omni Sweeper, and both show that my main OS drive only houses 30 GB worth of data. 10GB of that is Home ...
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1answer
755 views

Drive speeds … PCIe vs external thunderbolt SSD

I have a new 2014 MacBook Pro with 1TB internal PCIe SSD. Blackmagic Disk Speed Test is reporting read/write speeds of over 900MB/s. I am debating whether to swap this machine for a 512GB one (saving ...
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1answer
55 views

How can I put my image of a drive onto a new partition on a Mac? [closed]

My friend has a Mac which suffered some sort of hard drive failure. I'm not sure if it is a hardware failure, the filesystem is corrupted, or both. We tried 'repair' in Disk Utility and it said it ...
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2answers
9k views

MacBook Pro won't boot with new hard drive, but a different MacBook Pro will

So here are the details. My friend and I both have 13-inch Mid 2010 MacBook Pro's. Same processor and specs since they were purchased at the same time, but originally had 250 GB hard drives. His hard ...
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2answers
6k views

WD MyBook appears as read-only

My WD MyBook Essential with USB 2.0 appears with read-only permissions. I set the drive up on my old Vista machine, and when Vista began crashing, I switched to Ubuntu. I still have the Ubuntu ...
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2answers
186 views

Import data from old HDD (on a PC) to new MacBook

I'm planning to buy a new MacBook Pro for school next month, and I wanted to know if I can use Migration Assistant or any other tool to get all data from my old hard drive to the new one. The problem ...
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1answer
128 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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2answers
2k views

Thunderbolt SSD or USB 3 SSD - Need an external SSD drive

I'm planing to get an SSD(500GB) probably Samsung EVO or Corsair(LS,LX,GT) & seagate thunderbolt adapter for my macbook pros' 2011 and 2013 Retina. ⌘ - I've already upgraded my 2011 MBP with ...
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2answers
1k views

My Toshiba hard drive doesn't work on Windows machines

At first I was struggling to get my Toshiba Hard drive to appear (so I could use it) on my MacBook Pro (as I wanted to put all my photos, iMovie videos etc on there) so I eventually found a way by ...
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117 views

Why Can't I Make a Macally G-S350SUAB2 Boot Family's iMac?

I can't seem to be able to get the Macally G-S350SUAB2 enclosure that my dad loaned me for development use to boot a copy of OS X 10.9.4 Mavericks which I installed using my dad's early- or late-2011 ...
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2answers
12k views

How to create a second partition on an external disk and is it safe?

I want to create a second a partition in my hard disk where one (about 900 GB) is used for Time Machine and another (100 GB) is used to store info like a thumb drive. I don't want any existing data ...
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2answers
3k views

Macbook Air intermittently can't find startup disk

About six months ago, my Macbook Air started having a strange issue where it would often not be able to find the startup disk, giving me the flashing question mark. Initially, I was convinced the hard ...
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1answer
263 views

Time Machine Backup to drive shared on BTHomeHub3?

I have a Freeagent GoFlex Drive hooked up to my BTHomeHub3 router. My Desktop PC is backing up to it fine but I'm having troubles with Time Machine. My Mac can mount the drive perfectly fine and use ...
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1answer
856 views

Time Machine Backup accidentally unplugged, can't repair

I accidentally removed my Time Machine backup without ejecting. It didn't show up in Finder after I plugged it back in and Disk Utility cannot repair it. Disk Utility recommends reformatting the disk, ...
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0answers
89 views

Loading Windows 7 on external drive for gaming

I'm attempting to load Windows 7 onto an external hard drive in order to boot from the hard drive whenever I play games. I originally split my internal drive to make a Mac OS side and a Windows side, ...
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1answer
75 views

Internal hard disk requirements will not allow me to update to Maverick

I tried to update to Mavericks, downloaded the update through App Store but the installation stalled with an error message saying my internal hdd didn't meet requirements. I'm using an iMac mid 2007 ...
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1answer
171 views

Where should i look to improve slow I/O performance measured with dd?

I have been measuring my primary disk I/O with the following command : dd if=/dev/zero bs=2048k of=/Volumes/Toshiba/tstfile count=1024 2>&1 | grep > sec | awk '{print $1 / 1024 / 1024 / $5, ...
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1answer
203 views

Macbook air booting from external hardrive stuck on startup wifi screen

I'm moving over my old macbook computer to a 2010 macbook air, I replaced the hard drive in the macbook air prior to this so there is nothing on the hard drive that is currently in my macbook air. I ...
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1answer
3k views

Can't figure out what is taking up so much space [duplicate]

When I cd /; du sudo du -h -d1 I get a total of about 160 GB (this is on a 256 GB drive). However, when I look at Disk Utility or About this Mac -> More Info -> Storage it looks like I'm using a solid ...
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1answer
812 views

Erased hard drive, trying to Reinstall Lion OS X… HOW?

My mac wasn't loading past the boot screen (white, apple logo, spinning gear). So I CMND + R and went to disk utilities and ran Disk Repair. It could not repair. I tried everything. Even a an fsck ...
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1answer
16k views

Error: “The operation can’t be completed because one or more required items can’t be found. (Error code -43)”

I accidentally pulled an NTFS hard drive out of my Mac OSX Mavericks machine several times and realized that I accidentally created multiple entries of many different names in my /Volumes/ folder. Now ...
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2answers
861 views

My Mac died and I can't access iPhoto on my external hard drive

My Mac died. When I connect my external hard drive to my laptop I can't access my iPhoto – it says iPhoto won't open because it's a machine backup. Any ideas?
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1answer
119 views

How to repair a MacBook Pro 2007 hard drive bus?

Is there a repair I can do to the hard drive bus on a MacBook Pro 2007? I've changed the SATA cable but it still won't see the drive, which I know is good as it boots externally! Disk Utility doesn't ...
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2answers
15k views

external hard drive found only by disk utility, cannot eject or mount

I'm using a Seagate GoFlex that seems to have encountered some trouble. The drive does not appear on the desktop or Finder. I've double checked that Finder > Preferences allows for it to appear in ...
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242 views

External USB 3.0 Seagate HDD No Longer Mounting

Out of nowhere my 1 TB Seagate FA GoFlex won't mount my Mac formatted partition (the only partition). I have run repair disk on the drive and on the partition and find no errors. I still get an ...