Can't use a 3 TB drive?

Why can I use a 2 TB drive just fine, but a 3 TB drive only shows up as 846 GB?

They hide the unit with Zero GB bottom right of the page
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I would like to know if you have to back up a macbook hard drive, can I use a external hard drive that has been previously used to back up several pc 's, or is it best to have a separate external drive for the Mac?

I would like to know if you have to back up a macbook hard drive, can I use a external hard drive that has been previously used to back up several pc 's, or is it best to have a separate external drive for the Mac?

In the Mac side of things, backups usually come in two flavors: clones or incrementals.
A bootable clone is a bit-for-bit copy of all essential files in the startup volume. If using the Lions, clones can be made using CarbonCopyCloner or just plain old Disk Utility. These backups represent the safest protection of your info, but take the longest to do. Recovery is an inverse process: you copy the clone back into the internal drive.
Incremental backups start with a complete backup of the startup volume and only copy whatever changed from the previous run. OS X includes the fully integrated Time Machine backup utility to do this. It is extremely easy to do and takes the least amount of time. Recovery is another matter altogether since you have to start with a freshly installed instance of the OS and have to apply all intervening backups to bring the result to the latest saved version.
As for where the backup takes place, the recommended media is an external dedicated drive or drives connected via the fastest interface available on your Mac: Thunderbolt, USB3, Firewire, or USB2. Network-based backups, wired or wireless, are attractive but may not offer the same performance and hence take longer. Also important to note that the entire drive need not be completely dedicated to a single backup. The Mac's EFI firmware infrastructure allows for an unlimited number of partitions on a hard drive and each can be used for either type of backups.
Holler if you need specifics on how to do each. This was just an executive summary.

Can I use a sata3 hard drive with a late 2009 imac

Looks liker the hard drive in my five year old iMac is about to go belly up. Was getting hardware errors, very slow startup and Carbon Copy Cloner reported bad blocks during the backup. I want to buy a new HD at a local store and have the Apple store install it. Will they do that and can I use a SATA 3 drive with my older iMac?

YEs you can use a SATA III drive but the Apple Store will not install it for you. Find an AASP and see if they'll install a drive for you.

Can i use an external hard drive in windows to add additional storage after my initial partition is set up. i want to add a 500 GB hard drive to use with my windows. I set windows up in boot camp with a 50 GB partition?

can i use an external hard drive in windows to add additional storage after my initial partition is set up. i want to add a 500 GB external hard drive to use with my windows. I set windows up in boot camp with a 50 GB partition? I now want to add another 500 GB?

Yes. Windows supports external USB drives.

Can I use one external hard drive for 3 of my Macs?

I have a 2007 white MacBook, a 2011 MacBook Pro, and a 2013 MacBook Air.
I want to be able to transfer all of my precious family photos off of my MacBook and Macbook Pro onto an external hard drive and then wipe those computers clean, and then I want to be able to backup and wipe clean my Macbook Air so that I can update it to Mavericks.
Can I use one external hard drive to do this for three of my Macs? Will it be compatible with all of them? And will I still be able to use the hard drive with my Air once it is updated to Mavericks?
Which hard drive do you recommend?

1. Yes. Note that anything you want to keep should be on at least two drives in case one of them fails.
2. Yes.
3. Yes.
(110959)

How can I use my external hard drive for my iphoto instead of my mac book pro memory?

i don't know if this question has been asked before: how can I use my external hard drive for my iphoto instead of my mac book pro memory? just like itunes all my song are save on my external hard drive. make sense?

Moving the iPhoto library is safe and simple - quit iPhoto and drag the iPhoto library intact as a single entity to the external drive - depress the option key and launch iPhoto using the "select library" option to point to the new location on the external drive - fully test it and then trash the old library on the internal drive (test one more time prior to emptying the trash)
And be sure that the External drive is formatted Mac OS extended (journaled) (iPhoto does not work with drives with other formats) and that it is always available prior to launching iPhoto
And backup soon and often - having your iPhoto library on an external drive is not a backup and if you are using Time Machine you need to check and be sure that TM is backing up your external drive
LN

How can I use an external hard drive to both back up and free up storage on my macbook?

I've used a hard drive to back up my 2012 Macbook Pro via Time Machine, but I'm not sure how to use it as external storage to move things like video and music off of my Mac to free up memory and then how to move the same things from the hard drive on to other devices like my iPad or iPhone. For instance, I have a ton of movies and would like to store most of them on an external hard drive so that they aren't taking up all of my memory on my Mac, but want to be able to move them easily back onto my phone or iPad. Also, can I use the same hard drive to both back up my computer and use it for external storage? If so, how do I do that?

Always use two drives for this: one for backup; the other for storage. Don't mix the two uses on one drive. There's a greater risk of data lost without that redundancy.
If you plan to backup using Time Machine, then be sure the backup drive's capacity is at least twice that of the drive you are backing up.

Can I use a usb thumb drive for Time Machine?

Can I use a usb thumb drive for Time Machine backups?

Hello,
Yes you can use a (large) thumb drive. The most common format for a Time Machine backup drive is Mac OS Extended (Journaled).
Hope this will help.

I want to use a video projector with powerpoint can I use my mac to drive it- and what about sound?

I want to use a video projector with powerpoint can I use my mac to drive it- and what about sound?

Hi Scott,
You should be able to. If the projector has a speaker with acceptable sound, that's one option, otherwise powered speakers or a surround system.
What connections does the projector have?
Exactly which MBP do you have?

Can I use a 2tb external drive with Time Machine to backup my Mac Mini (256gbSSD + 2tbHDD)?

Can I use a 2tb external drive with Time Machine to backup what I have on my Mac Mini?
My Mac Mini has one 256 SSD and one 2tb HDD. I want to use Time Machine to do a backup of everything.
Would an external 2tb My Passport Drive by Western Digital work for the backup?
It seems like it would not work because the total storage on the Mac Mini is 2304 gigabytes (SSD + HDD).
And the external Western Digital drive is only 2048 in gigabytes versus 2304 gigabytes the Mac Mini has.

No. A Time Machine backup drive should have at least twice the capacity of the drive it backs up. You would need at least a 4 TB backup drive for Time Machine.
Might I suggest as an alternative that you not use Time Machine but a third-party backup utility that simply overwrites older files with new ones such that the backup drive can be the same capacity as the drive backed up.
Suggested Backup Software
1. Carbon Copy Cloner
2. Get Backup
3. Deja Vu
4. SuperDuper!
5. Synk Pro
6. Tri-Backup
Others may be found at MacUpdate.
Visit The XLab FAQs and read the FAQ on backup and restore. Also read How to Back Up and Restore Your Files.

Can you use a external hard drive to keep all your iTunes info on it

Can you use a external hard drive to keep all your iTunes info on it

Yes.
The easiest way is to copy the whole iTunes folder out to the external drive, then press and hold down shift as you click the icon to start iTunes. Keep holding shift until asked to "Create or choose a library". Choose the library on the external drive.
tt2

Can i use my ext hard drive USB 2 on the the new macbook pro laptops with a USB3

can i use my ext hard drive USB 2 on the the new macbook pro laptops with a USB3

stephan ach wrote:
but i read that there are lots of problems with the new macbook pro. i have all my data on ext. la cie hard drive. i wont have a problem reading them?
What problems specifically? If you have a problem you should start your own thread and explain the problem in detail.
External USB devices including hard drives and DVD work fine on the new Macbook Pros.

My Mac Pro only has a 250GB hard drive. can I use my 1TB hard drive from my windows computer, they're bith SATA

my Mac Pro only has a 250GB hard drive. can I use my 1TB hard drive from my windows computer, they're bith SATA

You want system, data, backup etc. Make good use of the four internal drive bays.
You will have to use Disk Utility to ERASE or click on drive and use PARTITION to make it Mac writeable.

HT1766 Can you use an external hard drive to back up my movies in iTunes but still be able to access them or is there a device so I don't have to use a pc ??

Can you use an external hard drive to back up my movies in iTunes but still be able to access them or is there a device so I don't have to use a pc ??

You can store them on a separate hard drive, you don't need to keep them on your laptop's hard drive. On your computer's iTunes on the Advanced tab in Edit > Preferences there is a 'copy files to iTunes media file when adding to library' tickbox - if you untick that, you should be able to copy the films to a separate drive and add them back to your iTunes library (File > Add To Library) and it should then point to them on that separate drive and not copy them to your hard drive. When you are happy that it is what is happening and that they are safely on your external drive you can delete the films from your laptop's hard drive.
If you plug the external drive into a different USB port next time (assuming that your laptop has more than one) then it might get a different drive letter, so you might need to always use it with the same port.

Can I use a portable hard drive for ipad data storage?

Can I use a portable hard drive for ipad data storage? I want an iPad mini, but don't want to get a large one (memorywise) along with cellular capability. I remember that the old iPads coiuld not communicate via their iPhone connector to transfer data. So can I do that iwth the newest iPad mini via the lightning connector somehow? Thanks, Tom

No. But you can with Seagate's wireless GoDrive.

Leopard to Snow Leopard can i use a large flash drive to backup first?

I've been using Leopard for 4 years with no problems.
Since Google decided to stop support for Leopard, and I use Chrome a lot I decided to upgrade. I won't be upgrading to Mountain Lion right right away. I ordered my Snow Leopard disks from Apple.
I understand that I need to backup. I want to backup with Time Machine before I upgrade the OS, but I don't have $75+ right now to purchase an external hard drive for this purpose only.
Can I use a large Flash Drive to run Time Machine? Like a 32 GB? I know that flash drives have a limited number of writes on them and can go bad, so I am thinking I could just use it this one time to make sure I have a clean backup. If this is possible, then can I set up Time Machine again later when I have an external drive?
Also, I have 2 cores on my Mac, but I have no idea how to use the 2nd core.
I'm also not sure if I need to purchase a specific external drive because I have a mac.
Thanks for the help.

If you only need to make a full backup prior to upgrading, I would suggest using SuperDuper, which for creating a full, bootable clone is free. (It is not free when you start needing to make incremental backups, but you won't be doing that, at least not right now.) For a bootable clone, you only need a Flash drive (or external drive) as big as the total size of the utilized space on your hard drive right now, not as big as whatever the entire drive size is.
In the past, I would have recommended Carbon Copy Cloner for this, but it's no longer free or donation-ware and you don't have the budget for both that and some kind of external or Flash drive.
http://www.shirt-pocket.com/SuperDuper/SuperDuperDescription.html
You might also want to look around newegg.com for inexpensive USB external drives, or even large enough Flash drives. You'll probably find a much less expensive external hard drive than a Flash drive for this purpose.
You do not need to use Time Machine, but even if you did you could just make one full backup to a Flash or external drive and then unmount and disconnect it. An external for TM only needs to be so large because it's constantly taking snapshots of your drive and those add up. But you won't be using it that way.
Anyway, I think you're much better off with a bootable clone, should you need to restore that.
Don't worry about having 2 cores; that's nothing to do with backing up.

Can't use a 3 TB drive?

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