Is a flash drive reliable for time machine backup?

Setting up time machine. Wondering if a flash drive is reliable for this purpose. Thanks for any views. mjkjk

By default, Time Machine makes a full backup of your entire drive. My guess would be that it would fill your entire flash drive, or within a very short time.
You could exclude all but your data files, I suppose.
Time Machine works on an exclusion basis, not an inclusion basis. So, you'd have to go through and exclude lots of stuff to force it to only backup your data. That's why I suggested one of the other methods.
I guess I neglected the other part of the question because I really don't know about the reliability. I have heard that you shouldn't trust your data to them. But remember, what I've heard could be complete hogwash.

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Can I select certain drives only for Time Machine backup?

I have several internal drives and several external drives connected to my MacPro desktop computer. If I backup everything in all of the drives using Time Machine, the capacity on my designated external drive for Time Machine backup will soon be filled. Is there any way to selectively backup via Time Machine from only designated drives, not all drives connected (internally or externally) to my computer? Is so, how can that be done? I assume that Time Machine will start deleting data when its capacity is exceeded. If that is so, and I remove the designated Time Machine drive at that point and replace it with a new drive, will the removed drive thereafter be able to be reinserted and the prior material read and transferred as needed? Is there any way to utilized Time Machine after I insert the replacement drive to only archive new material saved after the switch of drives?

Yes, mount the drive by opening a new Finder window and clicking on your base station's name in the left column that says 'Shared'. Then double click on the drive name to mount it on your desktop. From there, open Time Machine prefs and select that mounted drive as your backup disk. Time machine will then back up to it. Theoretically.
If you want that disk to automatically mount every time you login to your computer, go to Sys Prefs Panel and select 'Accounts'. Then click 'Startup Items'. From there, drag the mounted drive's icon from the desktop in to that startup items list. It will then auto-mount from there forward.
I have had many problems backing up this way with Time Machine. It will, 9 times out of 10, fail over a wireless backup with an Airport Extreme Gigabit base station and a 1TB Western Digital My Book. Nothing seems to fix, so I have given up. When TM is finally fixed - I will use it. Until then, it's junk software as far as I'm concerned.
But - best of luck. The instructions above are how it's 'supposed' to work..

Hard drive specs for Time Machine backup

My LaCie external HD has died an ugly death. So I am in the market for a new drive to use as my Time Machine backup.
I am looking at two Western Digital drives. One has NTFS file system, the other HFS+. Does this make a difference in terms of compatibility with my iMac and Time Machine?
I am currently running OS X 10.8.5. but I may upgrade to Mavericks 10.9. Does that influence this?

Thank you for your quick answer to my question. One other question:
These hard drives all have usb 3.0 connections. My iMac has USB 2.0 which will work but is much slower. It also has a Thunderbolt port and a Firewire 800. Do you know if are there adapters that allow the usb3.0 to connect to either the Thunderbolt or Firewire ports?

How do I password protect the external hard drive used for Time Machine backup

Can anyone help me to put password protection on the external hard drive I use to Time Machine backup my iMac internal hard drive? I use Snow Leopard 10.6

I think that was FileVault 1. Starting with Lion (10.7) Mac OS X uses FileVault 2, which is whole disk encryption.
Based on complaints seen in these forums, I would say FileVault 2's only complaint has been when people forget their password/encryption key (it seems an encrypted disk does prevent anyone without the password from accessing the data, including the real owner). Otherwise it does not seem to be causing any serious issues. Your Mileage may vary and objects are closer than they appear in your side view mirror (standard disclaimer). Of course this is all academic while you are using Snow Leopard (10.6).
There are other whole disk encryption packages available, such as PGP Whole Disk Encryption, HOWEVER, I would not advise it for your Mac OS X boot disk, as it has been known to be a problem when you try to install operating system updates or upgrade to a new version. NOTE: I have not seen PGP Whole Disk Encryption discussed much, ever since FileVault 2 came along.

If using 2 hard drives to for time machine backup is it possible to exclude files from one backup only??

Hi,
At work we have a network system that allows backup of everyones mac via time machine is there a way I can exclude certain files and directories from this backup without removing them from the private time machine backup that I have?
Many thanks,
Nick

Time Machine is one app on your Mac, thus it will exclude the files on all back-ups.

Can you use the same external hard drive for Time Machine backups and as an additional storage drive?

I have an external HD that I've been using exclusively for Time Machine backups. I need to clear space on my hard drive, so I was thinking to move music & photos to an external drive. Wondering if I can use the same one I have (which I'll aslo keep using for Time Machine) or if I need to get another drive.

Hi Jossydtaylor,
Time Machine can use either an entire external disk or a partition of that disk:
OS X Mountain Lion: Disks you can use with Time Machine
http://support.apple.com/kb/PH11171
You can use Time Machine with a Time Capsule, and with USB, FireWire, and Thunderbolt disks. The backup disk can be directly connected to your computer or be on a network. If the backup disk has been divided into partitions, you can use one of the partitions.
If the disk is partitioned using the Master Boot Record (MBR) partition type, some partitions may not be available for use with Time Machine. The GUID Partition Table (GPT) partition type is recommended.
For more info on partitioning, see this article:
Disk Utility 12.x: Partition a disk
http://support.apple.com/kb/PH5845
Cheers!
- Ari

Is it possible to use more than one external hard drive for Time Machine backups?

I want to use two hard drives for Time Machine backups.
Bigger one keep at home and be sure it is safe.
Second one (very small pocket size) keep with me for travels.
I want to backup to both drives to be sure I can restore everywhere and to be sure if something bad happened with my small travel disk I can restore from home backup.
Is there any problem with listed schema? Is it normal for Time Machine to handle backups for different drivers and keep everything consistent and smooth?

I really need some help! I have been using an Iomega NAS 1TB HD for the past year. And I received an error message. I believe I have ran out of memory on this drive.
Then recently in the last couple of months I got a ReadyNAS Duo 2TB with 2TB RAID. Should I switch my back ups to this one and delete the other back up file or keep the old back up image file on the Iomega?
Can I transfer the old image back up to this new ReadyNAS? How do I do this?
I appreciate any help.

Can I set up multiple usb hard drives- one for time machine and a second for media? Can one also print wirelessly with an old HP C6280 printer?

Can I set up multiple usb hard drives- one for time machine and a second for media?
Can one also print wirelessly with an old HP C6280 printer?

Can I set up multiple usb hard drives- one for time machine and a second for media?
Yes.
Can one also print wirelessly with an old HP C6280 printer?
Possibly by using an Airport Express, but depends on what type of port connection the printer requires.

Can I partition a hard drive so that one partition is for windows files and the other is for time machine backups?

I have a 1TB WD passport that currently contains windows files e.g photos, documents, etc. Can I partition it so that one partition contains these files and the other partition is used for time machine backups? Also, how do I change the partition system on the hard drive so that it uses the GUID partition system?
Thanks in advance.

Yes, you can, though you need to format and partition the drive from the scratch.
1) back up your PC data on other drive.
2) partitioning your drive into 2 partitions with Disk Utility.
3) format one partition by Mac OS extended (journaling) for Time Machine, the other by exFAT for PC data.
4) restore PC data on exFAT partitioned drive.

HT201250 How do I find out what portable drive was the drive I used for Time Machine Backup?

Hi, I have 10.7.4 and need to figure out what drive I was using for Time Machine Backup. I have three drives and I have connected each of them to my macbook pro, but I get an error, "Time Machine Error, The backup disk is not available" when I hit the time machine icon on the top of the screen and the "backup delayed" prompt. If I try Back up Now I get message, "Time Machine could not complete the backup. Back up disk is not available." I am trying to figure out what the time machine back up would actually look like as a file on the drives but I don't see a folder/file name Time Machine. If I enter Time Machine I can see in the far right column, in purple, the last back up date (Sept. 12, 2012), but when I hit it nothing happens. In the Time Machine preference box the select disk has, in red and to the right, "Delayed" with an "i" within a circle, and the option indicates, "Next backup: when disk is connected."
I know I have a years worth of backups on one of the three drives, but I can't figure out how the heck to find them or how to determine what was the last drive I used for the backups within Time Machine. Help please.

Hi, I have 10.7.4 and need to figure out what drive I was using for Time Machine Backup. I have three drives and I have connected each of them to my macbook pro, but I get an error, "Time Machine Error, The backup disk is not available" when I hit the time machine icon on the top of the screen and the "backup delayed" prompt. If I try Back up Now I get message, "Time Machine could not complete the backup. Back up disk is not available." I am trying to figure out what the time machine back up would actually look like as a file on the drives but I don't see a folder/file name Time Machine. If I enter Time Machine I can see in the far right column, in purple, the last back up date (Sept. 12, 2012), but when I hit it nothing happens. In the Time Machine preference box the select disk has, in red and to the right, "Delayed" with an "i" within a circle, and the option indicates, "Next backup: when disk is connected."
I know I have a years worth of backups on one of the three drives, but I can't figure out how the heck to find them or how to determine what was the last drive I used for the backups within Time Machine. Help please.

External hard drive used for Time machine is full and having a hard time backing up. what should I do?

External hard drive used for Time Machine is full and having a hrad time backing up. What is my best option moving forward? NAS?

For All things Time Machine see Pondini's Excellent Infirmation here...
http://pondini.org/OSX/Home.html
Start with FAQs and Troubleshooting.

External drive use for Time Machine change to "Read Only"

I have an external hard drive set up for backing up with Time Machine on my Mac. It has been working well. Now when time machine tries to back up it tells me the external disk is read only. The hard drive does mount to the computer and will let me open the Time Machine folder. When I am in disk utility it also sees the external hard drive but will not let me click on repair disk permissions. Under the drive info's sharing & permissions window it said " You can only read." , After unlocking everything is grayed out, but the permission is set to read & write. Any thoughts on how to get this drive back to read and write? Its a 2TB drive with 1.79TB on disk. The drive has not been ever used on a windows machine or use on any other computer and is use only for Time Machine backups. One day it was read/write next day read only. Thanks!

The backup drive has malfunctioned and corrupted itself. If that has ever happened before, or if it ever happens again, replace the drive. You may want to consider replacing it anyway for the safety of your data.
You should start another backup now, on another drive, if you don't already have one. One backup is never enough to be safe.
If you choose to keep using the problem drive, turn Time Machine OFF temporarily in its preference pane, then launch Disk Utility, select the backup volume, and run Repair Disk. This operation may take several hours. If the volume can't be repaired, you'll have to erase it and start over. Don't do that unless you have at least one other complete backup. Remember to turn TM back ON.

HT4848 Is it possible to partition an external hard drive that is already being used for Time Machine backups without it being erased?

I'm want to use my current external hard drive, which I use for Time Machine Backup, as a recovery disk for Mac OS X Mountain Lion 10.8.2. From what I have read, the recovery disk assistant will erase all data on the external drive unless it is partitioned. Can I partition my current backup drive without erasing it, even though it is already being used for Time Machine?

It's very simple to test. Turn off your computer. Have your time machine backup plugged in. Hold option and turn it on, keeping option held. Do you see your time machine drive? If so, select it and press enter. You'll end up in recovery. If it works, there you go. Then just click the apple and restart to get back to your regular desktop. Then you'll know for when you're ready to do the deed.
Edit...
I'm not sure if time machine will think it's an entirely different computer, though, when a hard drive changed, making an actual restore not doable. Either way, you could still reinstall mt lion fresh and then just migrate after, skipping the need for SL.

Is it possible to use an external hard drive for time machine backup and also as a regular hard drive?

Is it possible to use an external hard drive for time machine backup and also as a regular hard drive?

I am using an external drive in the exact way that you described. You just keep it plugged in to the computer when you want to access the movies and files. In order to put files on it, just go to finder open up the drive under devices and drag and drop files onto the drive. It is just like using a usb drive with a terabyte of space.

Cleaning virus-infected files on external hard drive used for Time Machine

I am kinda reposting this with some extra explanation since I didn't really get any good respnses on my first post:
I am running McAfee VirusScan and it locates and cleans virus infected files just fine on my computer, but when it finds infected files on the external hard drive I use for Time Machine backups, it says "Repair Failed". Is there a way to clean infected files on my Time Machine backup drive?
I had found a virus in several documents on my Mac, which I cleaned, but it seemed to infect a bunch of the files located in Time Machine as well. I know these files shouldn't harm my Mac, but I still don't like having virus infected files. They seem to propagate and I don't want to give them to any of my Windows-using friends.

Hi,
Usually (but not always), virus-infected files aren't system-related, so if they cannot be repaired, there should be an option in VirusScan to delete them or quarantine them instead of repairing them. Assuming that you are archiving Mac-related files and not archives of Windows files, then it should certainly be safe to just have VirusScan delete or quarantine them. An alternative is that you could delete them manually. But before you do any of this, be sure to take a look at the filename and its location in the folder hierarchy to make sure that you aren't removing a file that's critical to the operation of some piece of software.
Hope this helps,
Ken

Is a flash drive reliable for time machine backup?

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