[SOLVED] Seagate 2TB Expansion Drive suddenly read-only. How Do I fix this?

[laluna]

I have a Seagate 2TB Expansion Drive. I use a MacBook. Up until 2 days ago I was able to save files on there, then midway through a download I got an error message saying that my drive was read-only. I've contacted Seagate but they have been just about useless as they told me that they have never heard of that happening before. I can drag my files out of the EHD onto my desktop & they are fine, I just can't save anything. Does anyone know how I can fix this(please keep in mind I'm ok with computers but I need explainations in plain english please!)? Seagate have told me that I can't use their EHD on a Mac but I've been using it for a year & the place I bought it from, as well as a zillion Google results tell me that you can. Will all my stuff be lost in order to fix this issue? Thanks

 

[iskra]

Drive is probably NTFS. You probably had some kind of NTFS hack on your Mac that stopped working.
Copy files from drive to another HDD and format it to HFS+ if you are only going to use it with a Mac (or/and want Time Machine on it) or format it to exFAT for compartibility between OS X and Windows.

 

[Ijack]

Read the first sticky at the top of this forum for more details.