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Questions tagged [external-disk]

A storage device attached to a computer, but not enclosed within the computer's casing

1229 questions
13
votes
8 answers

What is the benefit of purchasing a Mac formatted External Hard Drive?

I have seen in shops that you can buy external Hard drives in both Windows and Mac format. I was under the impression that an external Hard drive will work across both platforms, however having seen this and the fact that the Mac formatted one was…
Graeme Hutchison
  • 6,704
4
votes
1 answer

External Hard Drive - Get Write Access Rights

I have a Mac Book Pro. When I attach my external hard drive to it, I can only read rights. How to I get read and write rights?
yeveee
  • 41
3
votes
5 answers

Cannot reformat or unmount external that was used for Time Machine

Trying to reformat a drive that was used for an employee's Time Machine and Data storage. It is a partitioned drive. Disk Utility failed to unmount the Data partition and reported the TM partition was OK, but I can't eject either without issues: See…
Wendi
  • 43
2
votes
1 answer

Does the boot drive for macOS have the hostname where I can easily get to it?

I don't throw out my old drives. I finally got a big NAS and I'm slowly going through the old drives copying the useful data to the NAS. Some of the drives were the boot drives from old laptops. It would be nice if I knew the hostname of the laptop…
pedz
  • 443
2
votes
3 answers

Connecting a FireWire 800 external hard drive to MacBook Pro early 2013 through its USB 2 port

I need to connect a FireWire 800 external hard drive to a MacBook Pro early 2013 through its USB 3 port. I would have done so through the Thunderbolt port but the adaptor for that is too expensive for me at the moment. I bought a connector on eBay…
jackyboy
  • 31
1
vote
2 answers

Weird behaviour with external USB3 enclosure

I am having issues where an external USB3 drive(#1) is not showing up after reboot. It also doesnt not show up when holding option during boot. This external drive is a clone made with Carbon Copy Cloner. I have cloned the recovery partition as well…
aknewhope
  • 172
1
vote
0 answers

Can I disable the "disable the disk you inserted was not readable by this computer"?

I am writing a script to read files from external drives (thunderbolt to U.2 SSD), which have been formatted with the ext4 file system. Every time I connect one of those, I get a dialog with the message "The disk you inserted was not readable by…
j4nd3r53n
  • 151
1
vote
1 answer

2020 MacBook Pro won't mount WD external hard drive

It's formatted HPS+. Mounted fine yesterday (and for a long time before that). Now, the light on the drive blinks on-and-off and it sometimes briefly shows up in the output to diskutil list as /dev/disk3. I've tried diskutil eject disk3 and similar…
jrennie
  • 121
1
vote
0 answers

Uninitialized external hard drive fix

I plugged my hard drive as usual and it does not mount. I go into Disk Utility it tells me that there are 2 parts to my hard drive. The first part is titled AppleAPFSMedia and is uninitialized. I have tried using First Aid on it, but it just…
talalzahid
  • 11
1
vote
1 answer

Mercury Elite Pro Dual mini only getting 250MB/s read and write

I have a Mercury Elite Pro Dual mini with dual 4TB drives in hardware RAID0 (the enclosure has a raid switcher). I have formatted the drive to APFS. I am connecting to a 2016 MBP w/TB using the supplied Thunderbolt 3 cable. Could anyone tell me why…
lukemh
  • 13
1
vote
1 answer

"Disk not ejected correctly" msg from 2016 MacBook laptop

I sometimes use the laptop periodically throughout day without unplugging it or the external drives. However, if it puts itself to sleep as a result of a period of inactivity, when I reawaken it, I get the message "Disk not ejected correctly" …
Meg
  • 11
1
vote
2 answers

How to repair or back up external hard drive when disk utility can't repair it?

I have an external hard-disk with a single Mac OS Extended partition. This disk stopped working a couple of days ago. I tried to repair the external hard drive with disk utility but no luck. The error message is the following: Error: Disk Utility…
Jereh
  • 11
0
votes
1 answer

How can I know external HDD used time?

I want to know how long I used my external HDD. The HDD is WD My Book model. How can I know that?
Eonil
  • 1,548
0
votes
0 answers

One of my Macs suddenly fails to read U-disk

One of my Macs suddenly fails to read my U-disk. I have restarted the machine several times it still shows "0 items, 102.11 GB available". While my other Mac can read the u-disk without any problem. How do I fix it ? With the comment I got from…
Qiulang 邱朗
  • 787
0
votes
0 answers

Block External Devices

In macOS Big Sur, is there a native way to block reading and writing from external disks and USB flash drives? Are there any third-party software apps which can perform this block?
Tom
  • 111
  • 3
1
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