External HD backup for Time Machine

I have a 320GB MyBook Ext HD. When I was installing Leopard I got a message that if I chose my Ext HD as a backup HD all the content would erased.
So I didn't select it as a backup HD.
I've purchased another 320GB Ext HD.
What would happen, since my eMac has only one FireWire port, if I hooked up both Ext HDs to that port? Would I get two Ext HD, one in which my files wouldn't be erased and one that would serve as a backup HD?
Could I just hookup the new Ext HD initially to set up Time Machine and then connect the second Ext HD afterwards. Would that save my old Ext HD's files?

I just called Western Digital and the tech guy said I could link the MyBook HDs. He said that another MyBook icon would show up on my desktop and finder.
I'm just nervous about the potential of erasing the older Ext HD.
Is there an idiot proof way to do this?
When I went to the Apple Store last weekend only one person in the store had actually installed Leopard and I had a hard time getting answers. I'm sure now it would be different. The Geniuses hadn't even installed it!

Similar Messages

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.

HT201250 new external hard drive for Time Machine backup suggestions?

Ok, I have 3 external hard drives; unfortunately I've used them on my PC and they are read only on my iMac. So, I need to buy a new external hard drive for Time Machine backup. I'm a little confused; can I buy any EHD and them format it so Mac can use it or are there special EHD's I need to purchase?
Anyone have a particular EHD that is working well for you? Thanks, Blue

Bluehowler wrote:
Ok, I have 3 external hard drives; unfortunately I've used them on my PC and they are read only on my iMac. So, I need to buy a new external hard drive for Time Machine backup. I'm a little confused; can I buy any EHD and them format it so Mac can use it or are there special EHD's I need to purchase?
Anyone have a particular EHD that is working well for you? Thanks, Blue
Unless you need all three external drives for your PC, you can reformat in one of them in Mac OS Extended (Journaled) for use with Time Machine. However, since Time Machine backs up hourly, you'd need the external drive to be running constantly. That means ventilation of the drive becomes an issue since some, such as Seagate, can get very hot in their sealed enclosures. Some drive manufacturers try to get around this by spinning down the drive when not in use, but I've read complaints that that doesn't play well with a Mac. So whether you reuse one of your current externals or get a new one, it's a good idea to keep the drive's ventilation in mind.

Hi, I have a macbook pro with a new hard drive installed. My WD external drive backup on time machine now wont let me access the files. I get a prompt saying 'you do not have permission to access the files'

hi, I have a macbook pro with a new hard drive installed and restored. My WD external drive backup on time machine now wont let me access the files. I get a prompt saying 'you do not have permission to access the files' After my new drive was installed I plugged in time machine and it started backing up. I paused it when I realised that it was running for more than a few minutes. I now realise that it probably started backing up the new hard drive all over again. Which makes me think that the original back up must be on the WD back I cant seem to access it. Any ideas would be helpful.

See E-10 in the first link.
Time Machine Troubleshooting
Time Machine Troubleshooting Problems

External Hard Drive for Time Machine - 2 TB. Can I remove other external drives it was backing up?

I have an external drive dedicated for Time Machine, it's 2 TB. Last year I started backing up computer (500 GB) and one external hard drive that has 500 GB. IAlso, I have another external drive that is 1 TB connected to my computer. I noticed last week that I was hearing that other external drive sounding funny, so I thought I would add it to Time Machine to back up. Now today my Time Machine failed. I tested the drive or verified the drive and all was well. My thought is because I added this drive to Time Machine it failed because of not enough room? Is there a way to remove that other external hard drive and go back to just the computer and the 500 GB?
I did btw out of a panic mode buy the GDrive that has Thunderbolt with 3 TB, yet I can't use Thunderbolt because that plug is used for my monitor, bummer. But, maybe using this new external drive I can back up the 500, the computer and the 1TB. Any thoughts?

aashton wrote:
Now today my Time Machine failed. I tested the drive or verified the drive and all was well. My thought is because I added this drive to Time Machine it failed because of not enough room? Is there a way to remove that other external hard drive and go back to just the computer and the 500 GB?
When you say the Time Machine failed, do you mean the drive containing the Time Machine backups failed, or what failed was trying to back up the new drive you added? If Time Machine was able to complete the first full backup of the new drive, then adding Time Machine didn't cause the problem, it was a coincidence. If Time Machine runs out of space it just starts deleting the oldest backup. I suppose it might fail on the first Time Machine run after the initial backup if it didn't have space to delete stuff. When you look at the Time Machine drive in the Finder, is it in fact full? If there's plenty of space left on it, it's not clear what the failure was about.
Also, testing and verifying with Disk Utility will spot some problems but not all.
aashton wrote:
I did btw out of a panic mode buy the GDrive that has Thunderbolt with 3 TB, yet I can't use Thunderbolt because that plug is used for my monitor, bummer. But, maybe using this new external drive I can back up the 500, the computer and the 1TB. Any thoughts?
Thunderbolt can be daisy-chained, so if it or other Thunderbolt devices have a pass-through port it might be possible to do all that. But it might be better to return the drive and get a USB 3 drive instead. It would be fast enough, cheaper, and more versatile. For a single hard drive (not a RAID or SSD), Thunderbolt is not really much faster than USB 3.

Mac mini as an external hard drive for time machine??

I have a mac mini from a few years ago and it is never used. I was wonder if it could be used as an external hard drive for time machine. If this can be done how do I go about setting it up for this type of useage?

Thanks for starting this thread. I too am trying to use my old mac mini in target mode to utilize it's hard drive for Time Machine.
I hope to strip it down to just it's OS (10.5) and use the remaining hard drive space for Time Machine backup.
Is it possible to just have it running at certain times for regular back in target mode? Or do I have to keep it on constantly?
I fear having to restart using the "T" command each time. Isn't there a way to just have it sleep and then have the ability to wake it up as I backup or restore?
thanks in advance for any help.
Vince

Can not fine external hard drive for time machine sence lion was installed

I can not fine external hard drive for time machine sence lion was installed, it don't reconise it at all.

I have a Mac Mini (late 2009) and I have an iomega 1TB external hard drive connected to my mini via firewire and usb (usb allows me to use the usb ports on the external 1TB drive to daisy chain other devices). Since I installed Lion, my Time Machine and this 1TB drive (and its partitions) is finicky. Sometimes it is mounted and sometimes it is not. This issue has only surfaced post Snow Leopard and in the Lion era. I am not the first to say this but the whole reason I went Mac was b/c of Vista. I am beginning to think that Lion is the new Vista. Sorry for the latter, just venting... b/c this ain't the first issue with Lion.

I have just upgraded from a Macbook to a Macbook Air. I have been using a iomega external hard drive for Time Machine, which use a Firewire. However, Macbook Air's do not have a Firewire port and i cannot find an adaptor anywhere. Can anyone help?? Thanks

I have just upgraded from a Macbook to a Macbook Air. I have been using a iomega external hard drive for Time Machine, which use a Firewire. However, Macbook Air's do not have a Firewire port and i cannot find an adaptor anywhere. Can anyone help?? Thanks

There has never been a reliable firewire ---> USB adapter suitable for external high speed storage. This was a major issue when the MacBooks lost the firewire port a number of years ago (Apple subsequently brought it back).
The only high speed port on the Air is the ThunderBolt port. There are external ThunderBolt drive options out there, but they're somewhat more expensive than traditional USB/FireWire options.

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

Can I use my 2TB Time Capsule ONLY as an external hard drive for Time Machine backups?

Hi...wondering if somebody could help me out there.
I currently have an older Apple 2TB Time Capsule (previous generation) which I'm using as both my WiFi access point, as well as my Time Machine backup location for both my iMac and my MacBook Pro.
We've been having slow WiFi issues in our home, and seeing as how this Time Capsule is a number of years old, were thinking of upgrading to the faster WiFi routers with 802.11ac capability. I'll be honest when I say we were considering other options, beyond the newest Time Capsule.
My question is, can we somehow use the 2TB of storage on our current Time Capsule for the purpose of backing up our computers with Time Machine, but NOT use the WiFi functionality of the Time Capsule itself?
I'm assuming if I manually plugged either my iMac or MacBook Pro (wired ethernet) into the Time Capsule, I could likely get that computer to recognize and use it for Time Machine purposes, but I'd like to use it to backup both computers, ideally wirelessly on the MacBook Pro.
Any help would be great.
Right now I'm running a DSL line into a DSL modem, which then runs ethernet into my Time Capsule. From there, I have a 4 port switch connected for wired devices (we wired our home with ethernet jacks in almost every room). We also have an Airport Express to extend the range of the network.
Thanks,
Jason

You can bridge the TC and plug it into whatever wireless router you buy.
There is no need to turn off the wireless in the TC.. but you can set it up as a secondary wireless network. That is totally up to you. I find the Gen4 TC very fast on 5ghz.. but you need it to be close to the computers.. in your case that should be dead easy.. simply plug it in by ethernet in the same room as the iMac say.. and set it up with bridge and the imac plugged into it by ethernet.. one computer then can access the internet and backup via ethernet with huge speed improvements.. the laptop can then use whatever your new router wireless network.. or the TC one if it is close enough..
So there are plenty of variations and your setup is easy to handle with the large amount of ethernet you have.
Just post again if you need specifics.. but I need specifics to give them!!

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.

Using external hard drives for Time Machine backups

I would like to let everyone know about an important issue regarding what type of media to use, or better said not to use for Time Machine backups.
I tried to use a RAID 0 array disks ( FIY: RAID is a storage technology that combines multiple disk drive components into a logical unit for the purposes of data redundancy and performance improvement.), but after a few minutes the backup suddenly stopped giving me a message of failing to write to the disk.
I tried to back up several more times, but the result was the same. I called Apple Customer Support, they said there was nohing wrong using a RAID 0 array disk combination.
I checked the RAID disks with disk utility, the disks were okay, but it did not solve the problem.
I reformatted the RAID disks, but that did no help either.
Then I used a different disk not part of any RAID array, and the Time Machine backup was able to successfull finish he task.
I called Apple to tell them about this issue, and they finall confirmed I was right:
Conclusion: backing up to a RAID 0 array disks using Time Machine does not work

Is there anything else on the drive? If not, just erase it with Disk Utility.
If there is, have you emptied the trash? That will take a very long time, and may present problems wtih locked files, permissions, etc. If so, see #E6 in Time Machine - Troubleshooting.

Can I use the same external hard drive for time machine and storing other files

I have a 640GB external hard drive that I have been using for over a year for time machine backups. My mac hard drive is now starting to fill up and I am looking to move audio, video and picture files to my external hard drive. How do I do this without messing up my time machine backups? Can I do both on the same external hard drive? Do I just make new folders on the external hard drive to move the files I want? Thanks for the help.

If you move the files you will need to get another disk to back the files up to. You don't want to have only one copy of certain files (personal, professional etc.).

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.

Is it not recommended to use a partitioned external hard drive for time machine?

1. i hv a 1 tb seagate back up plus hard disc ..,,i want to make partitions for using it for time machine, mac, and window repectively . is it not recommended to use a partitioned drive for time machine? some where i have red that time machine wont be able to restore data from external partioned hard drive in case internal hard drive crashes.
2. if i use the seagate back up plus 1tb for mac only and use time machine to take backup (roughly 250 GB) , then the rest space i cant use to transfer movies, pictures from a PC
3. how should i best use the seagate back up plus hard drive (not seagate back up plus for mac) in a way that i use it for back up , and to work with both mac and PC?

I use a partitioned external drive for Time Machine as well as other things.
How you partition it is a function of yoru needs.
Barry

External HD backup for Time Machine

Similar Messages

Maybe you are looking for