Technical Discussion
  >> Apple Issues


Register (or login) on our website and you will not see this ad.


Pages in this thread: 1 | 2 | (show all)   Print Thread
Standard User blfamily
(eat-sleep-adslguide) Sun 12-May-19 11:04:10
Print Post

Why does Time Machine fail to backup


[link to this post]
 
after the iMac has been turned off and back on? The message I receive is more or less "Time Machine failed because the HDD is read only".

Simple question I can't find the answer to. Or am I seriously meant to leave the iMac on 24/7?

Steve
Standard User TinyMongomery
(eat-sleep-adslguide) Sun 12-May-19 18:58:09
Print Post

Re: Why does Time Machine fail to backup


[re: blfamily] [link to this post]
 
As a matter of interest, how do you get it to work again?

This is not typical behaviour and may indicate a fault with the backup disk. The first step would be to run "repair permissions" on it. You may want to check this article: https://www.lifewire.com/fix-time-machine-errors-225...

--------------------------------------------------------------------------
Everyone is entitled to his own opinions, but not to his own facts.
Standard User ian_c
(eat-sleep-adslguide) Mon 13-May-19 00:33:42
Print Post

Re: Why does Time Machine fail to backup


[re: blfamily] [link to this post]
 
Agree with Tiny - I'd suspect a faulty HDD. Run Disk Utilities over it as a first step.


Register (or login) on our website and you will not see this ad.

Standard User blfamily
(eat-sleep-adslguide) Fri 17-May-19 20:16:51
Print Post

Re: Why does Time Machine fail to backup


[re: TinyMongomery] [link to this post]
 
Remove drive from USB Cable (its already been uncounted), then reconnect to usb cable then use Time Machine Preferences to allocate the drive.

I have run repair permissions and it finds nothing. Everything is fine if I leave the iMac on, it just seems after I have rebooted this problem occurs.

Steve
Standard User ian_c
(eat-sleep-adslguide) Sat 18-May-19 13:18:14
Print Post

Re: Why does Time Machine fail to backup


[re: blfamily] [link to this post]
 
Did you run Disk First Aid in Disk Utilities?

Standard User blfamily
(eat-sleep-adslguide) Sat 18-May-19 22:58:52
Print Post

Re: Why does Time Machine fail to backup


[re: ian_c] [link to this post]
 
Yes I have

However I have noted that the MAC HDD is APFS and the backup is MacOS Extended (Journalised) - could that be the problem?

Steve
Standard User ian_c
(eat-sleep-adslguide) Sun 19-May-19 01:01:43
Print Post

Re: Why does Time Machine fail to backup


[re: blfamily] [link to this post]
 
Nope.

What did Disk Utility say about the Ext HDD?

Standard User blfamily
(eat-sleep-adslguide) Mon 20-May-19 10:37:46
Print Post

Re: Why does Time Machine fail to backup


[re: ian_c] [link to this post]
 
that its perfect.

Mind you, I have realised what caused the problem (well it seems ok at the mo). The WD driver software was missing, I've downloaded it and had two successful shut downs without Time Machine throwing the failed error.

Steve
Standard User blfamily
(eat-sleep-adslguide) Tue 21-May-19 06:48:40
Print Post

Re: Why does Time Machine fail to backup


[re: blfamily] [link to this post]
 
Urgh.

Failed again after reboot

Files canít be copied onto the backup disk because it is read-only. You may need to repair or erase the disk using Disk Utility. If the disk canít be repaired, select a different disk for backups.

Immediately, I used First Aid to check both the volume Time Machine and the actual drive. Both said no problems.

Going to leave the imac on and will see if backup fails again.

Steve

Edited by blfamily (Tue 21-May-19 06:58:02)

Standard User TinyMongomery
(eat-sleep-adslguide) Tue 21-May-19 06:56:11
Print Post

Re: Why does Time Machine fail to backup


[re: blfamily] [link to this post]
 
I'd be inclined to try a different backup drive. That would help to pinpoint whether the problem is with the drive or the computer.

External drives shouldn't require any drivers for normal operation.

--------------------------------------------------------------------------
Everyone is entitled to his own opinions, but not to his own facts.
Pages in this thread: 1 | 2 | (show all)   Print Thread

Jump to