How do is clean my external drive from mac?

I inserted my external drive and it won't open in mac. Someboy suggested to download a cleaner or anti virus. what is the best for mac?

Did you install this HDD in the MBP or just connect it to the MBP? Have you formatted this HDD? Does it have an OS installed on it? Does it appear in Disk Utility? What settings do you have in Finder Preferences?
Ciao.
You do not need any anti-virus or cleaner program for your MBP.
Message was edited by: OGELTHORPE

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Format an external drive from mac to pc

How do I format an external drive (My Passport) from mac to pc (iOS Snow Leopard) without losing my data?

kwnola wrote:
How do I format an external drive (My Passport) from mac to pc (iOS Snow Leopard) without losing my data?
1: Remove the data off the drive
You can do this by installing MacDrive on the Windows PC to access the Mac HTFS+ format
Or you can use a Mac to remove the data.
2: Format the drive on the PC (preferably) by right clicking on the drive and choosing format
A: If data on the drive will have larger than 4GB sized files, then the format you want is exFAT
(if your using Windows XP, you can download exFAT from Microsoft)
B: If the data on the drive will always have less than 4GB sized files, then you should choose FAT32 for most compatibility with all other machines.
3: If you can only format the drive on the Mac then open Apple's Disk Utility in the Utilities folder
Select the drive on the far left, it should have the makers name and a size, then click Partition.
Now select the box and click Options: MBR Then select Format: exFAT or MSDOS (FAT32) and click Apply.
4: If any chance you need to secure delete any data remaining on the drive form being recovered, use the Erase with Zero (or 7x for very secure) before formatting.
Note: Formatting a drive on the PC there will be a option for NTFS, this is for access by Windows only, but software can be installed on the Mac to read/write this format.
If you use exFAT or FAT32, the Mac can read and write this format just like Windows can, no need for extra software.
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Transferring my external drive from mac to windows

Hi,
I have been having problems w/my itunes (taking forever to update my library). I have and use my iMac. Since Apple doesn't help with this problem (based on my seaches through apple support here), I called Geek Squad through Best Buy. They were able to identify the file that is causing the problem. The file is on my external hard drive, which is also where I store all my music. She attempted to take it from my external and drag it into the garbage, but it won't allow for that b/c my external has to be reformatted (another error message I have had for a while). Her suggestion was to hook up my external hard drive to a windows computer to get that problem file off and then re-hook it up to my Mac computer. This wont' reformat the external drive (I have to figure out this problem later) but she said if I can get rid of this on a PC, I should be able to access my itunes w/out waiting hours for the library to be updated.
So, my question is this: If my external hard drive has been formatted for an apple computer and has only been used on an apple computer, is it going to damage anything if I hook it up to a PC? I have all of my songs on this (they aren't on my iMac hard drive) and I don't want to damage these. I am also considering just buying another external hard drive and transferring these tunes to that new one. Thanks.

cjmandel wrote:
I don't know if I understand how to tell waht size the internal drive is. When I click on the "About this Mac" option, I see that this says " 2GB 800 MHz" I don't know if this answers the question correctly though.?
Compressing my music using the default itunes setting? How would I know if I am doing this?
Thanks for the help!
To tell what size the internal HD is open a new Finder window and on the left look for a drive probably called iMac HD then type Command I (I as in Ivan) and Command is the key next to the spacebar on your keyboard. It will tell you the capacity and look similar to:

Reformat external drive from mac os to windows

the windows partition on my mac book pro is close to full.
i would like to use an external drive formatted for windows for my growing number of pc games (gw,tdu,fsx,dirt - which run great on the mac book pro windows partition btw).
i tried to reformat a mac formatted external drive using disc utility, erase, format volume, but only choices were mac os extended and unix - no fat32, dos, or windows choices.
if i start up my mac book pro using windows, the drive does not show up in the 'hard drives' section of 'my computer'
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thanks

Hi Stefan, Turns out my old ext hd was corrupt. Bought a new 300G G-Drive and got a brand new problem which you may have heard of - the dreaded hal.dll crash. My windows partition crashed and after much effort I finally have everything working.
Had to go to the mac store to get a boot camp 1.4 disk (mine was the original) was able to save files from the corrupt windows partition to my mac partition. next i used boot camp to revert to a single partition on my internal drive, saving my mac system and files. next used boot camp to partition the internal drive into big mac and 31G windows. reinstalled windows. next using disk utility i split my 300G external into 10 30G partitions using your GUID suggestion and formatting in ms-dos(fat32) so my mac could read/write to it. dragged the files i saved to the 30G partitions and they work fine. loaded more games into the 30G partitions and they also are working fine.
could not have done it without your pointing out the GUID option.
vielen dank, john

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I have a Maxtor One-touch that I need to back up a bunch of data for a Windows XP user. After some research, I thought that formatting the drive in the MS-DOS (FAT) format would do it, however, after doing so and moving all of the data, I have tried the Harddrive on a PC running Windows XP. The drive doesn't mount.
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Hi Christopher,
follow either Templetons advise or (if not possible) use Disk Utility and set the partition scheme (behind the Options button) to MBR (Master Boot Record) and use MS-DOS (= FAT32) as file system.
That should also do the trick.
The 'standard' partition scheme on Intel Macs is GPT (GUID Partition Table) which can sometimes lead to the effect with Windows PC that you observed.
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Hey idw3,
Welcome to Apple Support Communities, and thanks for the question. Follow the instructions on this article to move your iTunes Media folder to an external hard drive:
iTunes for Windows: Moving your iTunes Media folder
http://support.apple.com/kb/HT1364
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In time machine I also backup to an external drive. I recently bought a new external drive and thats working fine. However, it still wants to backup to my previous drive which I dont want to use. In time machine preferences I see the old and new drive listed. Both are greyed out so I cannot deselect the older drive.
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mhattonmd wrote:
So when I open time machine preferences I see time machine and both external drives listed. If I click on options I see both external drives but I cant select either as they are both greyed out.
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Can't save multiple folders to external drive. Get: "The operation can't be completed because you don't have permission to access some of the items." when dragging large folders to mac os extended journalled external drive from OS 10.6.8

Hi
I am feeling VERY desperate!
After losing an external drive [dont ask....] -   I got another one : 2TB WD formatted properly [ OS extended journalled for mac ] ready for action to move my thousands of files and images and ppts in hundreds of folders across from the laptop to this drive because I travel a bit with the laptop and this is too risky not to back up at home.
But this message came up after starting on moving folders across [** and not straight away, sometimes after moving a folder when 4 of 6 gb of files across then the message comes up = very frustrating]:
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I have dragged-copied various small folders and files across successfully, but it is only working 50:50 and I can't leave machine with the idea of things copying eg: overnight - it just won't work....
I have been browsing google and find some people describing in CODE how they overcome this 'message'   .... but I [and I guess some other viewers of this in future & also in desperation] would need instructions for beginners.... to try this type of thing. I don't know any code.
How can this be happening - I feel ANGRY at APPLE !!!! for not posting easy fix instructions yet re; this, or better still updating software so it doesn't happen [ that I can find at least !!! ] .   There seem to be hundreds of people stuck with this stupid message and inability to back up their projects etc.
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hi Samberl
thanks a lot for the fast reply.
I was dragging folders from main folders on the laptop-desktop onto the external drive icon - to copy them across....
Your suggestion sounds very promising - I didn't know about 'cloning'.
Yes the idea is to backup the laptop -    I thought I would just move it all now, new - and then keep saving/dragging physically   across to the new drive myself each day or two...
Would this be the sizeof the internal hard drive = c.500 gb ?   =   under the HD icon on desktop is written :
" 499.76gb , 311.5 gb free "
I can erase and start agin on the new external drive - so this plan is to make two partititions, rather than the one at present, and make one of them 500 gb ?
I have found CCC [carbon copy cloner] googling - looks good.
When CCC site says it backs up the hard drive - would this mean all my files [over 100 gb] that are mostly in folders on the desktop, plus the others in itunes, iphotos etc found in the HD icon, would all copy across successfully [wherever they are in the computer ] ?
thanks again, hope you can clarify these things and then I will go for it.
It would be great and amazing if this 'lack of permission' message doesn't show up in the process of doing this ccc transfer - hopeful!
Julie

How to move all or partial data from Mac to an external hard disk?

Hei,
I need to learn how to move the movies/projects/events from mac hard drive to another external hard drive.
So basically, I have always imported all events from my video camera (the original clips) to iMovie located in my MacBook Pro hard drive. But after videoing for one year, the hard disc is starting to get full, and I cannot continue using only the laptop's hard drive.
So I would like to move part OR all of my iMovie related stuff to another external disk drive (connected with USB wire). How do I do that? Is it possible to have some events located in Mac's own hard drive, and some clips/projects in the external hard disk? How to arrange all this?
I know that "projects" are linked to the original event clips, so if I would be able to export some part of my iMovie data to the external hard drive, I should export both, for example, everything from the same year (the events) which is linked to the projects that are using those data.
Any tips would be greatly appreciated.

ok First with IM9, you can easily move stuff around. Here are some lessons learned from my experience managing projects across 6 different drives.
1. All Drives must be formatted macos extended journaled
2. The large terabyte drives are great for long term storage of events
3. When you are working on a project, if possible, try to move the clips the current clips you will need to your internal hard drive. This is only necessary if you care about any time machine back ups.
4. I have also worked on project straight from the external drives. I also use portable drives such as WD passports. These are small 500 gig drives that can travel with you. I have three of those. LOVE THEM.
5. One way to move projects and clips and keep things organized is to move the project using command drag. It will ask, do you want to move just the project or project and clips. Then voila all clips and project are then moved to that drive!
6. REMEMBER...MOVE WITHIN IMOVIE using COMMAND Drag. NEVER EVER USE THE FINDER. This is for both projects and events. Using the Command Key will ensure the projects are moved and not just copied!
7. Last but not least, if you have changed the dates of events using change date function in imovie....For some reason, there is a bug. It inconsistently will change the date. Don't know why and have reported the issue, but it is still not fixed!
But its still a great little app!

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How do is clean my external drive from mac?

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