Currently Being ModeratedFeb 27, 2012 8:37 AM (in response to gammill)
Select the hard drive and choose Get Information from the File menu. At the very bottom of the Get Info dialog box is a checkbox: Ignore ownership on this volume. I suspect this is what you are looking for.
Currently Being ModeratedFeb 27, 2012 9:05 AM (in response to gammill)
If, on the otherhand, you are trying to write to a drive that is formatted NTFS (for Windows), and can't.
You have two choices...
1. Reformat the drive. Either Mac OS format, if you are using this only on your Mac. Or ExFAT, or FAT 32 if you intend to use it on both a Mac OS computer and a Windows unit. note: ExFAT is not suported by XP.
2. Install one of the drivers necessary for the Mac to write to a NTFS volume. Unless you want the experience of having the support for this being one that is sporadic, avoid this. I used to be a strong proponent of NTFS-3G, until I started having the problems with Lion, that many users warned us about. Go this route only if you find you must use NTFS on your drive. Paragon and Tuxtera are the sources for these.
Currently Being ModeratedDec 6, 2012 12:03 PM (in response to dwb)
There is no such checkbox. It does not exist
Currently Being ModeratedJan 18, 2013 5:19 PM (in response to br121)
This is because the drive is probably formatted as NTFS. See SP Forsythe's post.