during file backup process, copying a folder from one external drive to another is a nightmare. Copy stopped halfway for no good reasons. I had no problem with previous macOS but the new macOS Sonoma 14.5 does not like copying at all. I spent all day rebooting when shutting down my Mac mini but no avail.
Cherub7171 wrote:
I have a Mac. Mini, external drives are through a hub and external drives do not have their own power supply.
That right there is likely the source of the problem.
Try connecting both drives directly to your Mac; if they work properly that way, then the hub is the problem. If it still doesn't work that way and one or both of the drives is a traditional HDD then they are probably drawing more power than your Mac can deliver. The only solution to that would be to get a power supply for each of the drives.
It would help a lot if you identify the exact make & model of both external drives.
Cherub7171 wrote:
I have a Mac. Mini, external drives are through a hub and external drives do not have their own power supply.
That right there is likely the source of the problem.
Try connecting both drives directly to your Mac; if they work properly that way, then the hub is the problem. If it still doesn't work that way and one or both of the drives is a traditional HDD then they are probably drawing more power than your Mac can deliver. The only solution to that would be to get a power supply for each of the drives.
It would help a lot if you identify the exact make & model of both external drives.
Are all drives formatted as APFS or MacOS Extended case insensitive? Do the external drives have their own power supplies? Are the drives connected directly to the Mac or via a hub?
An EtreCheck report would eliminate much guesswork:
Using EtreCheck to Troubleshoot Potential… - Apple Community
How to use the Add Text Feature When Post… - Apple Community
How much free space do you have?
Have you run Disk Utility's Disk First Aid on all connected drives?
In Disk Utility>View, select Show all Devices, highlight the top left entry.
Run Disk First Aid on all items in the left panel, from top down.
Are you running any VPN, Anti-Virus, or Cleaning apps?
+1 on etrecheck.:)
2 more:)
Are you running any VPN, Anti-Virus, or Cleaning apps?
+1 on etrecheck.:)
Yep, 1 drive per hub max, actually Bus Powered Hubs are pretty worthless, they don't supply enoigh mA!
A few other questions:
-What brand are the drives?
-How are they connected?
-Did you install a software/drivers that came with the drives? These can cause all sort of surprise issues and there is no need for them.
Can you try hust 1 drive>
Also check the current needs...
System Report>Hardware>USB...
I have a Mac. Mini, external drives are through a hub and external drives do not have their own power supply.
I have 200GB of free space, folder I tried to copy is about 3.5 GB.
OK, that part is good, how about the points???
Running disk repair did not help. All disked passed sucessfully
no vpn, no antivirus, no clearing app
Do you ever have the problem with 0 or 1 drive per Bus?
I always have two external drives on one hub. I had no problems backing up files before until a few days ago.
Mac copying file constantly hung up halfway even for small files
