Reformat external hard drive for Windows machine using disk utility

I have a Maxtor 160GB dual-interface external HD. I used it for my Mac OS X. I erased and reformated the hard drive on my Mac to MS-DOS using Disk Utility for use on my fathers Windows XP. I hooked the hard drive up to the Windows machine and the hard drive was visible in both Windows Explorer and on the task bar. I right clicked on the hard drive and selected Format. The formatting takes a while but at the end an error appears indicating the hard drive was not formattable. How can I get a MS-DOS formatted hard drive (from a Mac) to be used on a Windows XP machine with a NTFS format?

Turns out it is possible:
Maxtor Support..
I would use your Disk Management utility within Windows to repartition and reformat the drive. To access Disk Management, right click on My Computer, go to Manage, and then choose Disk Management. Within Disk Management the drive should show in your list of disks (Disk 0,1,2 etc etc). I would delete any partitions that are on the drive. To delete a partition, just right-click on the partition and choose delete. Make sure you’re deleting the correct drive. Once the entire drive says unallocated then the drive should be ready to partition and format. Just right click within the Unallocated Space on the drive and choose the New Partition or New Volume option to set up the drive.
I followed the instructions and everything worked.

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Need to reformat external hard drive for time machine?

Hello,
We recently purchased an external hard drive for our family iMac after we had to have a new hard drive put in. We picked up a Western Digital 1tb My Book (http://www.wdc.com/en/products/Products.asp?DriveID=725). I set up the external hd with time machine and all was fine for about a month.
An error message of "The backup volume is read only" started appearing. I attempted to repair the disk through these directions http://support.apple.com/kb/HT3275#1 but when I was trying to follow the steps, I think I disconnected the external hd without dismounting it, so now I'd assume I need to reformat the external hd. I can't seem to find instructions on how to do this. Where should I look for reformatting my external hard drive?
Any other tips or suggestions would be greatly appreciated.

Hard Drive Preparation
1. Open Disk Utility in your Utilities folder.
2. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Click on the Partition tab in the DU main window.
3. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, set the partition scheme to GUID (for Intel Macs) or APM (for PPC Macs) then click on the OK button. Click on the Partition button and wait until the process has completed.
Message was edited by: Kappy

External hard drive not recognised after using disk utility to format

i formatted two external hard drives using disk utility on my mac mini, now they do not show in finder. they can be seen in disk utility but the repair options etc are greyed out?

Try http://pondini.org/OSX/DU1.html
Allan

I bought an external hard drive for backups to use with Time Machine, but however when I try to connect it with the other windows laptop it doesn't work ? intact it doesn't work on any other device except my MAC ?

I bought an external hard drive for backups to use with Time Machine, but however when I try to connect it with the other windows laptop it doesn't work ? intact it doesn't work on any other device except my MAC ?

Do not worry about it.
Time Machine needs that your external drive is formatted in HFS+, or better known as "Mac OS Extended (Journaled)". This filesystem is used by Apple on Macs and Windows cannot read or write drives formatted with this filesystem, being this the reason why all your devices do not read the external drive except your Mac.
You can only use your external drive to make Time Machine drives. If you store anything different, you may damage the Time Machine structure, so it is better not to use it as a drive to store other data. Instead, get another external drive to do it or create a second partition on the external drive formatted in FAT32 by using Disk Utility > http://pondini.org/OSX/DU3.html FAT32 can be read by Windows PCs

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.

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.

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.

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.

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

I have an external hard drive that shows up in disk utility but Verify and Restore are greyed out.

I have an external hard drive that shows up in disk utility but Verify and Restore are greyed out. I am trying to determine what is wrong with the drive.
I need the data on the drive and it won't show up in Disk Warrior. I have tried different Mac's and different USB cords only to find the same outcome. When selected in Disk Utility the information read as such...
Disk Description : WD Elements 1023 Media                      Total Capacity : 500.11 GB (500,105,740,288 Bytes)
Connection Bus : USB                                                               Write Status : Read/Write
Connection Type : External                                                     S.M.A.R.T. Status : Not Supported
USB Serial Number : 575837314135304D36373132        Partition Map Scheme : Unformatted
As the drive shows in Disk Utility there must be some life left in it surely. There is a possibilty that the physical connection between the USB cord and the external drive is damaged but since the drive shows up I believe it's unlikely... before I give it to the pro's is there anything else I can do to diagnose the issue?

Hello,
I have just experienced the same thing!
Although my external drive shows in Disk Utility, it does not show in Finder.
And the Verify/Repair buttons are also greyed out.
Also, although the drive is 2TB. DU shows it as having Total Capacity of only 4.14GB! (Which should be the Free Space).
I was wondering if you solved your problem, & if so, would you share your solution.
I´m afraid to Erase in case I lose all my Data on the drive.
Thanks in advance for your reply!

Using External Hard Drive For Time Machine

Hi. I will be buying a new iMac and plan to use an external hard drive by Lacie for Time Machine backups. I haven't used an external hard drive for this purpose before -- previously I've always used Apple's Time Capsule. So, I don't know if I can leave the Lacie hard drive unejected and powered on even when I've shut the computer down. The Time Capsule never needs ejecting from the desktop and is always on, but I'm not sure if the same can be done with an external hard drive when using it for time machine backups.
So, I just need to know if, when using an external hard drive such as a Lacie for Time Machine backups, I can 1. leave it unejected even when I shut down the computer? and 2. Can I also leave the hard drive powered on even when I shut the computer down? It would be good if I could do this because then it would just always be on and ready for hourly time machine backups without my having to remember to turn it on and the eject it when it's finished for the day.
I'd appreciate any advice or information.
Thanks in advance.
John

pulp3au wrote:
1. leave it unejected even when I shut down the computer?
What are you referring with "unejected"? You should know that LaCie drives have got three modes: "On" (permanently turned on), "Auto" (when you turn off your computer, your external disk turns off or you unmount it) and "Off". Choose the one you want.
pulp3au wrote:
2. Can I also leave the hard drive powered on even when I shut the computer down? It would be good if I could do this because then it would just always be on and ready for hourly time machine backups without my having to remember to turn it on and the eject it when it's finished for the day.
Of course. You can leave the external disk turned on when your Mac is turned off without any problem. In "Auto" mode you won't have to do anything in order to turn it on again

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.

IMac can't find my attached external hard drive for Time Machine. Any ideas?

I have a Seagate for Mac external hard drive I have been using for my Time Machine backups. Last week it was no longer backing up. I unplugged it, reattached but Time Machine doesn't seem to be able to find it.

Sounds like the external disk drive has died.
If you have access to another computer, try testing it there. If not, you might be able to get the Apple Store to test it for you.

External hard drive for time machine back-ups

Can anyone please suggest the best external hard drive to use for time machine back-ups on my iMac?
I also use a 1TB external hard drive for my iTunes library, but I've noticed that it can be slower to access the music than if I used the iMac hard drive......any suggestions? My iTunes library is currently sitting at around 200GB.
Thanks.
Brian

i'd recommend a firewire 800 drive. many folks here speak highly of drives supplied by [OWC|http://eshop.macsales.com/shop/firewire> and [LaCie|http://www.lacie.com/us/products/product.htm?pid=11156].
JGG

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

Reformat external hard drive for Windows machine using disk utility

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