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Timemachine failing on M1 with Montery?

L

luckygbrandt

macrumors newbie
Original poster
Jun 2, 2020
16
8
Is anybody else having troubles with Time Machine on Monterey on a new MacBook Pro M1? My time machine stops while the backup is still in progress (tmutil status shows Running = 0) The backup is not complete. Next hour the backup starts again and the old inprogress backup is marked as interrupted. This is to a non-encrypted APFS external USB3 drive boing through an OWC Thunderbolt 3 dock.
 
How did you build your computer? Fresh or from a backup. I tried to use migration assistant and my Time Machine kept getting to the end but never completing. Like last back up would say "none". I worked with Apple support and they couldn't find anything. I decided to wipe my drive and start from a fresh install. It now works fine. There must have been something that migration assistant was bringing over that never let my back up complete.
 
deleon said:
How did you build your computer? Fresh or from a backup. I tried to use migration assistant and my Time Machine kept getting to the end but never completing. Like last back up would say "none". I worked with Apple support and they couldn't find anything. I decided to wipe my drive and start from a fresh install. It now works fine. There must have been something that migration assistant was bringing over that never let my back up complete.
Click to expand...
Its a full fresh install, no restore from backup.
 
I’ve not had this problem and my backups run every hour. I have my thunderbolt ssd connected through TS3+. 16” Pro.
 
I had this problem with a new Samsung T7 SSD connected to my M1 MacBook Air 16gb/256GB, MacOS 12.0.1 using a hyperdriveHD28C hub. Time machine was continuously trying and failing to complete the first backup (140GB or thereabouts) but was accumulating data on the drive, and had used up over 500GB on the T7, with no data showing in Finder on the T7. After a chat and two phone calls with AppleCare, and a bit of hunting around, I fixed it by doing the following:
1. Start up in recovery mode, open disk utility and do first aid on both the internal SSD partitions.
2. Connect the external SSD directly to the MacBook Air without using the hub.

My first backup has just completed. AppleCare said that doing the disk repair was one of their troubleshooting steps to try to fix the problem.
 
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cra19j said:
I had this problem with a new Samsung T7 SSD connected to my M1 MacBook Air 16gb/256GB, MacOS 12.0.1 using a hyperdriveHD28C hub. Time machine was continuously trying and failing to complete the first backup (140GB or thereabouts) but was accumulating data on the drive, and had used up over 500GB on the T7, with no data showing in Finder on the T7. After a chat and two phone calls with AppleCare, and a bit of hunting around, I fixed it by doing the following:
1. Start up in recovery mode, open disk utility and do first aid on both the internal SSD partitions.
2. Connect the external SSD directly to the MacBook Air without using the hub.

My first backup has just completed. AppleCare said that doing the disk repair was one of their troubleshooting steps to try to fix the problem.
Click to expand...
Thank you for sharing this. It worked on my 2020 MacBook Pro. I will try it on my 2021 MacBook Pro once I set it up again. I ran Disk Utility on all devices. It did not appear to have repaired anything but it fixed the problem with Time Machine.
 
OP:
"I don't have a USB-C to USB-A dongle"

Then, get one:
www.amazon.com

Cable Matters USB C to USB Adapter 6 Inches (USB to USB C Adapter, USB-C to USB 3.0 Adapter, USB C OTG) in Black

The Cable Matters USB 3.1 Type-C to Type-A adapter provides a convenient connection between the newest devices with USB Type-C and legacy USB peripherals with Type A. It adapts the Type-C port on a computer to connect all legacy equipment, peripherals, cables, hubs and chargers that ...
www.amazon.com

I'd suggest that you get TWO.
Always nice to have a spare one within reach.

BTW...
I'd suggest trying either CarbonCopyCloner or SuperDuper as your backup app.
Both are FREE to download and try for 30 days.
 
As an Amazon Associate, MacRumors earns a commission from qualifying purchases made through links in this post.
netnative said:
Thank you for sharing this. It worked on my 2020 MacBook Pro. I will try it on my 2021 MacBook Pro once I set it up again. I ran Disk Utility on all devices. It did not appear to have repaired anything but it fixed the problem with Time Machine.
Click to expand...

The First Aid fix did not work on my 2021 MacBook Pro and macOS 12.1 did not make a difference.
 
cra19j said:
I had this problem with a new Samsung T7 SSD connected to my M1 MacBook Air 16gb/256GB, MacOS 12.0.1 using a hyperdriveHD28C hub. Time machine was continuously trying and failing to complete the first backup (140GB or thereabouts) but was accumulating data on the drive, and had used up over 500GB on the T7, with no data showing in Finder on the T7. After a chat and two phone calls with AppleCare, and a bit of hunting around, I fixed it by doing the following:
1. Start up in recovery mode, open disk utility and do first aid on both the internal SSD partitions.
2. Connect the external SSD directly to the MacBook Air without using the hub.

My first backup has just completed. AppleCare said that doing the disk repair was one of their troubleshooting steps to try to fix the problem.
Click to expand...
Thanks for sharing this solution! I am a new user, and unfamiliar with MacOS, but fairly tech savvy. Having this same issue with a new MBP 16 Pro Max. Quick question: Will running first aid on the internal SSD wipe it? I have everything finally dialed in, and starting over seems... Unappealing. Thanks!
 
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