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best external hard drives with mac image
Chloe
I have an external hard drive that my macbook recognize and it shows up on the desk top but for some reason I can't add anything into the external hard drive. I can remove items from my external hard drive into my mac book.
I tried to format it but it continually says:
Volume Erase failed with the error:
Could not modify partition map
I have no idea what to do to fix this problem, so please any help would be most appreciative!!
Answer
Was your external hard drive set up on or for a Windows machine? If so, it may be formatted as NTFS. Natively, OS X can read from but not write to NTFS discs. Disk Utility should be able to tell you the current format. If it is NTFS, your options will be obtain a utility that lets you write NTFS discs, reformat as FAT32 if you want to be able to read and write on both OS X and Windows â this will result in some restrictions on file size under FAT32â or reformat as an OS X Extended disc if you never have to exchange with Windows. You'll need to repartition the whole disc, not just attempt to reformat the individual partitions, I think.
Was your external hard drive set up on or for a Windows machine? If so, it may be formatted as NTFS. Natively, OS X can read from but not write to NTFS discs. Disk Utility should be able to tell you the current format. If it is NTFS, your options will be obtain a utility that lets you write NTFS discs, reformat as FAT32 if you want to be able to read and write on both OS X and Windows â this will result in some restrictions on file size under FAT32â or reformat as an OS X Extended disc if you never have to exchange with Windows. You'll need to repartition the whole disc, not just attempt to reformat the individual partitions, I think.
What format should my external hard drive be formatted to work on a Mac and also hold files bigger than 4GB?
Alekz
I can't modify my external hard drive on my Mac because it's formatted on NTFS.
Then, What format should it be formatted if my files are bigger than 4GB? Fat32 doesn't let me save files any bigger than that! Any solution?
Answer
Well, you have encountered the limitations of using a PC formatted drive on a Mac. Is there any reason you're not wanting to format it as a Mac drive?
The normal reason for not doing this is because you want to share the drive with a PC. You haven't mentioned this situation and your question, but it's the only possibility I can think of.
So the bottom line, at least as far as I can see, is that if you want to share the drive with a PC then you aren't going to be able to do files over 4 GB. If you don't want to share it with a PC, then just reformat it as a Mac OS extended volume.
Well, you have encountered the limitations of using a PC formatted drive on a Mac. Is there any reason you're not wanting to format it as a Mac drive?
The normal reason for not doing this is because you want to share the drive with a PC. You haven't mentioned this situation and your question, but it's the only possibility I can think of.
So the bottom line, at least as far as I can see, is that if you want to share the drive with a PC then you aren't going to be able to do files over 4 GB. If you don't want to share it with a PC, then just reformat it as a Mac OS extended volume.
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Title Post: How to reformat an external hard drive to a mac book?
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