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First when you attach it to your USB port it should come up as an external drive in any Finder window. If not then you need to run Disk Utility, found in Utilities in the Applications folder or just search in Finder for it. Select the external drive and make sure it says or and Partition Map Scheme : Apple Partition Map if it was formatted in 10.4 or earlier (you didn't say) or Partition Map Scheme : GUID Partition Table if formatted in 10.5 or later. If not formatted so, for example, it's Fat32, then it is set for a PC.
Assuming the last and that this is a new drive, you will need to format it for a Mac to be able to write. Select the Erase heading and for Format select Mac OS Extended (Journaled) in 10.5 or later or Apple Partition Map in earlier versions. Name the disk. Press Erase, knowing that the drive will be cleared of data. You can also choose to partition the disk, usually not needed nor desireable.
You can then return to First Aid and Repair Disk and after that Fix Permissions. If your disk had data already (you seem to say so) then this is where you would start making sure it says Write Status : Read/Write.
If the Partition Map is not as given above and thus the disk is read-only, then you will need to transfer the data to your internal or another external with the right map.
You may need a new Hard Drive. It sounds as if you have the old Mac. Mini. If so? look on line for Mac Mini 4,1 "Core 2 Duo" 2.4 (Mid-2010) you can find good deals on one, that would cost as much to repair your unit. eBay is one place to look
cruzer micro 4GB, loaded with data. works perfectly in all systems except my xp. Problem didn't originate until after ghosting system to correct different problem. Now, error message states flashdrive not recognized. must then get behind pc, and gently work with it until i can hear the shift in the duo core processors and the orange light on the flashdrive comes on. Please help.
Format your hardrive for Mac OS: Go to Disk Utilities under the go menu in your finder. Select the external drive and click on the erase tab. Clikc erase again and it formats the drive. You can now copy files onto the drive.
I have several drives backed up and they work fine whenever they are imaged. anyway..
These drives are made for use in Windows and Mac enviorments. It is usually MAC users that have this problem.They are usually preformatted using fat32. because the drive is usually for storage fat32 is sufficent...but there are certain characters that fat32 dosen't care for...Do you have file naming scheme that uses odd characters? if so Those are the file names the error is refferring to. You may choose to reformat the drive using fat32(again) or NTFS(note fat32 has a better chance of data recovery just in case)your main hard drive might be NTFS.
The rest is only important if you use a MAC
Now if you have a MAC see below.
How do I initialise the external drive for Mac OS X?
Preparing the Seagate/Maxtor external hard drive in Mac OS X
Mac OS X cannot mount a FAT32 partition larger than 137 GB (128 GB binary value). Our partiton is 160 GB (149 GB binary value). Since your external drive comes with a large FAT32 partition preinstalled you will need to initialise the drive to use it in Mac OS X.
WARNING: Initialising or partitioning the drive will erase all data on the drive. If you have used this drive on another computer take the drive back to that computer and copy all data off of the drive before proceeding.
When the drive was plugged into the Macintosh you probably noticed a message reporting an error that it cannot read the volume. At this point you have the option to initialise the drive. If you missed that message you can initialise the drive manually.
Initialising the drive in OS X
If you see the volume error, you can click the Initialise option. If you do not see it, then go to Finder > Applications > Utilities > Disk Utility.
In Disk Utility: Select the external drive (149.05 GB). Be sure you select the correct drive before proceeding. If you have more than one 160 GB drive then be sure to select the correct one.
1. Go to the Erase tab.
2. Choose the type of partition (Mac OS Extended).
3. Type a volume label.
4. Tick the box that says "Install Mac OS 9 drivers". If this option is not selected, this device cannot be used by a computer running Mac OS 9. This option does not affect Classic.
5. Click Erase.
6. Read the prompt and Click on Erase again if you agree to erase all the data and you are sure the correct drive is selected.
7. The drive will now show on the desktop with a Firewire icon and the volume label as the name.
For more information on the FAT32 partition size limit in Mac OS X please read document number 107483 on Apple's support web site.
For more information about formatting drives in Mac OS visit Apple's support web site.
For more information about decimal versus binary capacity values visit our FAQ on the subject.
Let me know what happens.