Questions tagged [hard-drive]

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

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Why will an APFS fail to mount, but HFS+ on same disk mounts successfully?

I got a new Western Digital 4TB MyBook a year ago that I was using as a Time Machine drive for my laptop. Just today, it suddenly failed to mount. I ran Disk Utility/First Aid on the drive which ...
1 vote
1 answer
498 views

Macbook Pro 15inch mid 2010 won't detect internal hard drive

My mid-2010 Macbook Pro displayed the question mark on boot. I bought a new hard drive (SSD) thinking the hard drive failed (had a SSD in there). After replacing the SSD, I still had the same question ...
8 votes
1 answer
8k views

Macintosh HD is locked - Unlocking with Disk utility First Aid taking 12+ hours and still not completed

I have a problem with a new re-installation of Catalina. I am getting the following: "Macintosh HD" is locked" Pop-up message on every start up. After going into disk utility I have the following: ...
2 votes
1 answer
6k views

Format a SSD from Mac OS Extended to NTFS

I have a SSD formated in Mac OS Extended, and I want to format it to NTFS because I will use it on Windows. To do it, I installed Paragon. I rebooted my MacBook. I checked if the driver was actived, ...
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0 answers
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macOS kernel panics when many external drives are connected

I recently purchased a 5-bay HDD enclosure that I filled with hard drives. I connected this along with around 4-5 SSDs with NVMe adapters to my Mac mini via a powered USB hub. I noticed that when ...
0 votes
1 answer
2k views

Any better way to move app library path to external drive than using symbolic link?

I am running MacOS 10.14.5. I used symbolic links a lot to free up my internal drive. My internal drive is almost full and I need to free up some spaces again. Normally, the symbolic links solution ...
2 votes
1 answer
1k views

Disk Utility with extra Mac HD after clean install on Monterey (formerly Big Sur)

Not sure if I need to re-format and re-install again. Is it normal to see so many Mac HD, and should I try to remove the extra ones? Had some HD issue where somehow there was no space left and thus ...
2 votes
1 answer
138 views

Resize first partition on MacBook Pro M2, having two partitions with each MacOSX installed

I'm having a MacBook Pro with M2 chip from the company I work for. It is allowed to use the device with a separate OS installed on it. That's why I currently have two partitions, each with another ...
1 vote
1 answer
35 views

Can one copy some applications from one volume to another on the same iMac(Ventura)?

I have a 2015 iMac with an internal hard drive and an external SSD drive attached permanently to it. I would like to copy some Applications from one drive to another instead of re-installing. I wonder ...
2 votes
1 answer
5k views

RAID 5 options on macOS Big Sur?

I'm given to understand that Disk Utility in macOS Big Sur does not support RAID options other than RAID 0 and RAID 1. I've got a multi-drive enclosure that I'd like to setup for RAID 5. Are there ...
1 vote
0 answers
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How to safely cancel Disk Utility 'seven-pass secure erase'?

I want to dispose of an external hard drive, and before I do, I want to ensure its contents is deleted. I naturally opted for the most secure deletion method, which involves writing over the disk with ...
1 vote
1 answer
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2009 Mac with Upgraded GPU

Well I feel really silly. I had a stable running 10.13 with a metal supported gpu but I wanted to clone the drive as I move into Mojave. So I thought, oh I’ll start it up on an old hard drive running ...
0 votes
1 answer
368 views

Reformatted Windows HDD shows up twice in Disk Utility

Had a 1TB hard drive in a Windows laptop that I replaced with an SSD. I've put the old hard drive in a USB enclosure so I can use it as an external drive. I plugged it into my Mac and opened disk ...
1 vote
2 answers
112 views

Can the Apple Photos app index large photo libraries on an external drive?

I have never used Photos before except some bad experiences with it 10 years ago. I would like to use Photos to index over 2Tb of photos (2.26Tb with 415'805 photos to be precise) on an external hard ...
0 votes
1 answer
104 views

Can I tell if a hard drive is usable or fake?

I purchased a hard drive which looks like a fake (doesn’t mount when I plug it in, the label is suspicious). If there a way using terminal to know if it’s usable? Nothing mounts when I plug it in Disk ...
9 votes
4 answers
51k views

Why does my mac not have free space even after I delete files?

Today I want to install Catalina but it requires 17 GB of disk space, and I only have 8 GB. So I started to delete files but only found out that the disk space was unchanged or even shrinked more ...
1 vote
0 answers
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Acquire an image of the hard disk from the outside

I need to take a dd image of a MacBook (Model A2179) 's hard disk. I have no way to recover the password to access the system and I want to acquire an image of the main hard disk for forensic purposes....
1 vote
0 answers
26 views

Boot a live OS from external usb drive on a Silicon M1 [duplicate]

I need to take a dd image of a MacBook (Model A2179) EMC 3302 hard disk. I have no way to recover the password to access the system, so I was going to live boot something like puppy or ubuntu to dd ...
2 votes
1 answer
232 views

Old iMac Hard Drive not readable as external

My friend's iMac would not boot. I ran TechTool Protogo using a thumb drive with TTP 9 to test the hard drive. It reported several hundred failed sectors on the drive, so I recommended we replace it....
1 vote
1 answer
332 views

External Drive not showing up, light blinking, iMac

External Drive disconnected during backup but now it won't show up again. The light keeps blinking. How do I fix this problem? What I tried and didn't work: New USB cable Connect it to a different ...
17 votes
2 answers
32k views

How to always keep a local copy of documents/folder in iCloud?

I'm now using iCloud on macOS 10.12. Many folders and files (for example on my Desktop, etc.) are no more physically present on my hard drive, they have been pushed to the cloud. I have two questions. ...
1 vote
0 answers
14 views

How does one use Apple Photos to index photos on an external drive (if possible)? [duplicate]

I have never used Photos before except some bad experiences with it 10 years ago. I would like to use Photos to index over 2Tb of photos on an external hard drive (WD MyPassport). I have a 200Gb ...
1 vote
2 answers
2k views

Unable to Wipe and reformat an SSD Drive - wiping volume failed

I've run through a range of solutions offered on the forum The disk came from a Windows 10 machine and I wanted to wipe and install another OS but have been struggling. I gave up on the actual PC as I ...
1 vote
1 answer
60 views

TechTool Pro surface scan No bad blocks, SMART failed

I have a HDD which stores pdfs. So far I haven't had problems accessing the files. I ran a complete surface scan using TechTool Pro which said no bad blocks. Right before I ran the surface scan the ...
6 votes
3 answers
3k views

Reading HFS standard and MFS on Catalina

During the lockdown I decided to use some of my time to backup all the all Mac disks and floppies I have at home so I can store them in a somewhat more readable format that SyQuest cartridges and MFS ...
4 votes
1 answer
12k views

Macbook boots up to grey 'prohibited' symbol

I'm having an issue with my '09 13" Macbook Pro. When I boot it up, it seems to be booting normally until about thirty seconds in, when the Apple symbol is replaced with a kind of 'no-smoking' symbol, ...
1 vote
1 answer
94 views

moving backups between external hard disks

One of the external backup disks I use to back up my personal laptop filled up when I was too busy to buy another, so (in a rush) I grabbed another project's backup disk and added my laptop to it too. ...
0 votes
1 answer
90 views

Undo a diskutil partitioning attempt?

I accidentally reformatted /dev/disk2 (when I wanted to do it for /dev/disk5...) Users-MacBook-Pro-3:~ user$ diskutil list /dev/disk0 (internal): #: TYPE NAME ...
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0 answers
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PCIe SSD not recognized, only when restarting on iMac

I have an iMac 2019,2 that I installed an 2T Aura Pro X2 into the PCIe SSD slot, and I left the original Apple 1T HDD drive in the SATA slot. I was able to: Successfully split up the Fusion Drive ...
2 votes
1 answer
545 views

Manually Decrypt Partially Cloned APFS Volume

I recently attempted to clone a failing external drive to a new external drive. The clone failed part-way into the process. The original drive hardware has now fully failed, so I'm trying to recover ...
1 vote
1 answer
321 views

What is nvme0n2 on MacBookPro13,1?

While trying to install (dual-boot) Pop!_OS 20.10 I found /dev/nvme0n2 of size 8KiB on my MacBookPro13,1 which made the live-installer of PopOS crash just before loading the partitioning page and the ...
3 votes
2 answers
222 views

External Thunderbolt SSDs not showing space after deleting files

I have two external Samsung X5 2TB Thunderbolt 3 SSDs. Both of them work fine after I reformat them. But when I delete files (and empty the recycle bin), the space on them does not increase. In ...
0 votes
1 answer
519 views

WD Blue SSD stuck in a boot loop

My Mac is stuck in a boot-loop with a third party SSD. So I recently pruchased a WD Blue 500GB SSD to replace my HDD in my 13" MBP mid-2012. At first I wanted to clone my HDD to the SSD, looked ...
70 votes
8 answers
97k views

How to check if my HD is case sensitive or not?

How can I get information if my HD format is case sensitive or case insensitive? I want to make sure my Mac running Mountain Lion has a case sensitive file system.
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0 answers
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High Sierra installation is stuck and can't boot on the Yosemite OS as previously

I was installing macOS High Sierra on a old MacBook Air (more than 12 years) with Yosemite. But it didn't work, it shows, during the installation, a message like this: However doing that it didn't ...
2 votes
2 answers
100 views

macOS recommended maximum disk space usage?

I was told by a mac repairman that I should leave about 10% of the disk space empty, otherwise, my SSD and/or the machine would die. Is this true? I've never heard of such a thing in my life. He also ...
1 vote
2 answers
4k views

"Could not mount disk2s1 after erase" error for external SSD on mac ventura

I am unable to mount my segate external SSD. Everytime I restart macbook pro, I dont see volumes from my external SSD. If I try to mount manually from Disk utility, I get below error. Could not mount “...
1 vote
4 answers
2k views

Finder corrupt files on copy to external ssd

Problem: sometimes finder corrupts my files when copying to external ssd. Reproduction methodology: copy via finder file to external ssd, then check this file md5 -q ~/Downloads/path/to/source md5 -q /...
0 votes
0 answers
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Possible to access and backup a corrupted USB HDD via terminal?

TL;DR Is there any way to skip any checks on a corrupted USB disk, "raw mount" the device and create a raw image using macOS terminal tools? Details: An old Windows notebook of a friend ...
2 votes
1 answer
49 views

Is this mac book pro recoverable?

While scanning my HDD usng First Aid, I got this error: Checking volume. Checking the APFS volume superblock. The volume Macintosh SSD - Data was formatted by hfs_convert (1412.141.1) and last ...
2 votes
2 answers
394 views

How to partition a hard drive in MacOS?

I am trying to partition a new external drive with 4 TB capacity with MacOS 12.5.1 & Disk Utility to a Windows-compatible format (MSDOS etc.). But no matter how to "erase" the disk, I am ...
0 votes
1 answer
491 views

Mac not booting after moving SSD and HDD to another Mac

I had a mid-2011, 2.5GHz, AMD graphics, Mac Mini with an SSD and HDD using OWC’s dual drive setup. The SSD drive had the OS (10.11 I think) and the HDD had my home folder and an old version of OS X (...
1 vote
1 answer
460 views

Unable to add apps to Security & Privacy Preference on MacOS Mojave

Yesterday. I cloned my hard drive to my SSD for use. One of the essential apps I need to use is EVKey which works fine with no issue before. After I boot up the SSD, I notice that I am not able to add ...
0 votes
1 answer
278 views

How to transfer backups.backupdb from one external HDD to another?

I have two macOS Mojave macs that back up to a drive. Now, when I’m trying to just grab “backups.backupdb” from one HDD to another,I have this error : copying is almost over and the size of the folder ...
2 votes
1 answer
95 views

How to “sync” a laptop to an external hard drive if the hard drive is larger than the laptop drive?

I have what should be a really simple question but Google Search is failing me. I have a lot of data (TBs) on Dropbox. My laptop hard drive has only 500 GB. For the last few years, I’ve been using the ...
1 vote
1 answer
66 views

How can I best configure this hard drive?

I have a Mac Mini with two hard drives inside. The 1st one has an OS installed, and the files I work from. But I wanted to have the second one be used partly for storage, and partly have an OS ...
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0 answers
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Early 2008 iMac HD: diskmanagment .disenter error 49180 impossible to mount the disk

I'm pretty sure I'm not the first to reach out with this problem and I do not know if there is any solution other than change the disk. I appreciate any input you can provide and also I would like to ...
0 votes
0 answers
25 views

Copy Paste from one drive to another - permissions error

What I'm trying to do: I'm trying to copy 1.5TB of data from a Network drive (Drive G) on a Windows 10 PC and paste it to an external drive on my Mac Mini (Sonoma 14.2.1), the external drive name is ...
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0 answers
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Recover screen recording that had destination set to SD card that was unmounted

I was using a program called iShowU Instant to create a screen recording on my Mac and the destination was set to the SD card in the Mac's built in SD card reader. The Mac's battery died and the ...
0 votes
2 answers
1k views

Can’t restore Time Machine back up - an error occurred while adding recovery system to destination disk

Just upgraded my 2012(mid) non-retina 13” MacBook Pro with a crucial sad 1tb and having troubles restoring back up from Time machine. I’m sure it’s important to mention I installed a new data cable ...

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