New answers tagged

1

You have to edit the partition table and modify the type of disk1s2 (and correct the type of disk1s3) to get your main data partition back and make Boot OS X invisible: Log-in as admin Open Terminal and enter sudo gpt -r show /dev/disk1 to get an overview Unmount disk1: diskutil umountDisk /dev/disk1 Remove partition 2 and 3: sudo gpt remove -i 3 ...


2

The slot is proprietary, and it is not an M.2 or mSATA slot. I have seen no adapters on the market that will allow you to connect an ordinary SATA drive to the proprietary connector. Such an adapter would need to include an amount of electronics, as it is a completely different interface - i.e. it is not just a passive adapter. The only other supplier of ...


2

I have an iMac 27 Late 2012 and I upgraded my SSD. The fusion drive is a misnomer - it's actually two drives. There is an PCIe SSD, probably about 128GB that attached to the logic board, then there's a 3.5" 1TB HDD. Technically, you could upgrade the PCIe blade SSD drive, but after some research, I found it wasn't really economical. All you need is a ...


2

I followed Klanomath's reply above to successfully recover my Macintosh HD. I had tried to resize it from ubuntu (Bootcamp) and completely stopped seeing my Macintosh HD partition. I had tried several posts and tools to write and rewrite partition tables without success and was about to give up. I followed the steps #5 to #8 from the post. I did # 5 and ...


0

You need to reinstall Mac OS X Backup your system/data. Boot into Internet Recovery (CMD + R + i) Open Terminal Erase your Macintosh HD Volume diskutil cs deleteVolume 933B0D1B-9E56-4DB3-8853-013BE1C2C6E4 Erase Macintosh Volume Group diskutil cs delete 320B77F3-91C2-4221-B24C-D8B91C233D32 Erase SSD this should disk0, verify! diskutil ...


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The command sudo already exists, and runs what comes next as a superuser (usually after requesting a password). Then you can, for instance, delete all sorts if system files. No idea what actually happened, but some conflict seems possible. It seems like a really bad idea to name your game after such a powerful command!


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It because Disk Utility doesn't recognize all errors. I had the same issue before, and I fixed it by following the instructions on the onyx's Known Problem page and this guide to run fsck -fy under Single User mode


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It is, in fact, not gone as mentioned by Klanomath. To securely erase a disk, select the physical volume (no indentation on the sidebar list), select "Erase" from the toolbar and an option for "Security Options..." should be there. Within the menu, there is a slider that allows you to choose between one pass, three passes, seven passes and 35 passes. This ...


2

The secure erase feature indeed seems to be gone (or it's a bug). Open Terminal and enter diskutil list to see a list of your attached drives. In the following example, notice a pair of drives are identified: /dev/disk0 (internal) and /dev/disk2 (external) - disk1 is related with the Apple CoreStorage partition disk0s2. your_prompt_here% diskutil list ...


1

Could be anything. App updates, new apps, a virus that downloads stuff for you, automatically installed software, or a host of other things. If you did have an application on your Mac like Dropbox or Google Drive, (either of which could automatically be downloading stuff onto your computer) it could be that, but you do not. Here's what you should do: ...


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Every time you browse the web you are dowloading contents: HTML (text), images, video… Every time MacOS check for new updates, it is also downloading contents: content description, anticipated software updates… Here are a few recommandations for this kind of hidden disk scrounger: Install and run Malwarebytes. If your first disk state is 15 days sooner, ...


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I wanted to test the readability of an entire drive, so I used dd: $ df -h Filesystem Size Used Avail Capacity iused ifree %iused Mounted on ... /dev/disk4s2 465Gi 55Gi 410Gi 12% 14479165 107533501 12% /Volumes/Polaris sudo diskutil unmount /Volumes/Polaris sudo dd if=/dev/disk4s2 ...


1

I did the trick by Trent Fitzpatrick's recommendation. Everything works. Speed doesn't changed. Probably it's because I've just made a Fusion Drive and there need some time, probably it doesn't affect at all. But Write 120mb/s and Read 380 mb/s really slow for Fusion Drive I guess. I'll wait some time and if speed doesn't will change I guess I'll replace ...


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I did put my mac book pro's disk on a case, the from another mac I erased all the /System/Library/Extension/AMD*. (How to disable discrete graphics card and use only integrated graphics MacBook Pro Early 2011?). I was able to boot on the Original 2011 Macbook Pro 15'' El Capitan make imposible to boot in the single user mode and move all those files ...


1

I had previously gotten the Error 43 on my Mac. So I searched the Internet and found this article: How to Fix Error 43 Mac. To fix, what you need to do is basically two steps Reset the PRAM. From a powered off state, hold ⌘ Cmd ⌥ Option P R until you hear the startup chimes 3 times, then release and allow your system to boot normally. (Optional) ...


1

I have owned a MacBook Pro Retina since August 2012 and it gets modest use, with mainly web browsing and online video streaming as the main uses. As the DriveDX report shows, the SSD is rated at 90% after 3.5 years of use. My MACs seem to last forever, with an iMac 27" from 2009 still running fine - though I maxed out the memory and replaced the regular ...


2

don't tell me to buy an HDD Buy a new HDD. Here's why. First, a bit of history. ALL disk drives have bad sectors. Way back in the 1980s drives were simple mechanical devices that came with a bad sector list. Today, the bad sectors are mapped in the drive's firmware. The drive has slightly more storage than advertized and the controller just replaces ...


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I was able to resolve this by booting through internet recovery command+option+r and run disk utility. I was able to delete 3 partitions and after reboot i was now able to run bootcamp assistant once again.


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I can hardly imagine someone will have a similar problem, but if they do: Seems like Bootcamp wants to see an EFI partition. Once again, here was the gpt show output from above: my-MBP:~ uname$ sudo gpt show disk0 start size index contents 0 1 PMBR 1 1 Pri GPT header 2 ...


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Easiest way, with no thumb drive, or cloning: web install. With your Mac near a trusted Wifi access point, or plugged into Ethernet... While booting up, hold down command + r until you see the image of a globe. You will see a message below: 'Starting internet recovery. This may take a while.' If on Wifi, select the network and enter password. It may seem ...


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You can simply wipe the disks. Wipefs or even parted could be used, or you could just write zeroes to the drive using dd. The osx tools have some protection against deleting partitions in case of a corestorage being there.


2

You can try entering in Single User Mode and do an fsck on the hard drive. To enter single user mode, turn on your computer and immediately after press the Command s. This will load you to a terminal looking screen. Let it run its pre-checks. After it is done there should be two commands to run: a command to mount the drive a command to run fsck on ...


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Much Better way to do this, you don't need to format at all, as the drive can be reverted. Apparently a lot of the commands relating to this are undocumented? I have no idea really but I had to go through the same process to get disk utilities to allow me to do anything related to partitioning. Here ...


1

When using the Winclone product to install Windows on a external USB drive, it is extremely important that you first read all the instructions provided by Winclone. Winclone provides the Web page: Running Windows from an External Drive. This page provides links to two videos. The first link is the same as given in your question. The second link provides the ...


1

In general, I would think that a slow Time Machine disk is not going to really affect the performance of your machine. If you are using the 5400 RPM disk only for Time Machine, then the performance of that disk is only going to affect the speed that backups are made and recovered for the most part. It is true that when TM is running it is scanning your hard ...


1

I have a Mac Pro 2008 running El Capitan and also experienced slow downs with Time Machine. The slow downs had nothing to do with hard drive speed. I had never used Time Machine until I downgraded from Snow Leopard to El Capitan. I made a mistake and let Time Machine try to back up all connected drives. (I have four internal hard drives, and two external ...


2

I don't see why one would have anything to do with the other. Drives are not being constantly read from and written to unless something needs to do that. You can play a video game and once it's in RAM it'll stop reading the hard drive in many cases. A large movie on the other hand will constantly read from the hard drive. But even still, Time Machine and ...


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I believe it will only show up as internal if it's connected to the internal bus on the motherboard. Anything else will display as external. You can change the icons if you want it to look like an internal drive from Finder.


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Generally, MacBook Pro models use 2.5 inch drives and iMac models use 3.5 inch drives. The 3.5 Hard Disk Drives (HDD) generally rotate a 5400 rpm, where as 3.5 inch HDDs rotate at 7200 rpm. I often thought the slower speed was to save laptop power, but this is just my guess. What really matters is the speed data is transferred to/from the drive. Take my ...


1

The first thing you want to do is reference the drive specs to see what it is rated in terms of data transfer speed. According to C/Net, it has an external data transfer rate of 300MBs (it's a SATA drive, so this is expected) So, if you are getting a drive speed rating of 50MB/s, things are definitely slow. 5400 RPM is also quite slow to begin with. ...


0

You can simply create a new partition using Disk Utility to regain those 60 GB for usage. Another possibily is to change the size of your existing partition, depending on its current file system.


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several additional questions which may direct some insight: do you know the reason for board failures? Were they graphics related (ie., video failure)? some of the 2012 and 2013 MBP systems were known to have specific GPU chip failures, which Apple hid from public knowledge fairly well.. That COULD account for some of your board failures. 2 have all ...


2

I don't believe anyone can give a definitive answer. I would guess the Apple Tech Support folks would have indicated something by this time. I personnaly have never heard of this level of repeated failures for a single person and/or device. But I have seen low levels of failures of Apple devices at a much lower, single instance level many times over the ...


0

I eventually made a call with Apple support. They asked me to use the option first aid in Disk Utility, this didn't help. They then asked me to reboot my iMac in recovery mode and do the same thing again. This also didn't help. After these two options to repair my partition, they asked me to back-up whole drive and reinstall OSX. They told me that this ...


2

First, Some Diagnostics While SSD's will give you a boost in speed simply replacing one with the hopes it solves a problem could get expensive. Let's verify that the problem is the drive in the first place and not something else. If you can log into your system, open Terminal and issue the command diskutil list You will get a listing of all your drives ...


0

Yes, you can do this with disk utility. When you try to access the FileVault encrypted disk it will prompt for a password. You can then select it as the source for a restore to another drive.


1

Yes, you could just copy it back, but it may not be bootable. That can be fixed by installing OS X over the top of your files. It should preserve what is there and make it bootable.


8

I have the same model of Macbook which was showing the same issues. After replacing the Harddrive with an SSD I still had the same issue. It ended up being the SATA cable connecting the hard drive to the logic board. Over some time the insulation had started to wear off and the cable was occasionally shorting against the base of the case causing IO errors. ...


2

I have the same MacBook Pro. I did the following: I bought a SSD and replaced the hard drive disk. I installed OS X on the SSD. (240 GB - $100). I inserted 8 GB of RAM (replace the two 2 GB RAM) ( 2 x 4 GB - $50). Then I replaced the SuperDrive with .... the old HDD. You need to buy an adapter. (Adapter on Amazon - $30). Yes it's expensive, but it takes ...


1

You will diagnose that you have a serious disk problem by looking at /var/log/system.log and more specifically with: grep disk /var/log/system.log These error messages will clearly show if your disk is producing I/O error on the same location, which will indicate a disk problem, or on multiple locations which will indicate a bus or logic problem. I ...


0

The actual problem here was that I installed the OS while the SSD was in an external enclosure, not installed in the internal bay. When I wiped the drive, installed it in the bay and then installed the OS from the old HDD, now in an external drive, my problems were solved. I also tried another SATA cable before switching the positions, and that didn't help. ...


0

Use Internet Recovery on your Mac Mini and try repairing Macintosh HD with Disk Utility. If that fails to fix the boot issue, connect your Mac Mini in target disk mode to a mac running OS X 10.8 or later and see if you can at least copy the files off your Fusion Drive. In the future, set up a Time Machine.


1

As a proof of concept, I formatted a USB Thumb-drive using a GUID Partition Map and formatted it Mac OS Extended (Journaled) naming it "Encrypted". Then in Finder, I selected the disk named "Encrypted" and control-clicked selecting Encrypt "Encrypted"..., while setting its password to "password". When it was done encrypting, using Terminal, I ascertained ...


0

Solved by formatting the Time Capsule drive and reconfiguring Time Machine on the Mac.



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