My computer was reading my external when one day it stopped reading it. I have a mac computer. All I have on this external is music and pictures. I plug it in to the computer and the wall like before but now the computer wont even recognize it. help??
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Mac's won't read windows format disc, even if it's capable of reading the files wich I believe Newer Mac Operating Systems CAN DO, it can not read the file SYSTEM used to place them on the disc. You need a third computer. Put the files on a nother computer or two if you need the room or on another media or pocket drive. Use a program that VERIFIES the were moved without errors while copying them, the use the Mac to format the now empty disc drive and download Mac Pooler, or File Stuffer, and copy the files back onto the disc. Now the Mac will be able to read the drive they're on.
If the external hard drive has been formatted on a PC in NTFS file format then the MAC cannot read data off this hard drive. The FIX.. Connect the USB external hard drive to a Windows computer and copy your data off this hard drive to the computer. Then format the external hard drive in FAT32 file format. (the MAC can read and write to data to and from a Windows PC) Now copy the your data from the computer back onto the external hard drive. Now you can connect the external hard drive to the MAC and download your data to the MAC.
If the Buffalo had been formatted on a MAC their file format is HPFS and is not compatible with Windows. To be able to exchange data between the Mac and Windows the Buffalo external drive needs to be formatted on Windows XP in FAT 32 (not NTFS). Then the Mac can read and write data on this external drive as well as Windows XP.
If the hard drive was formatted on the MAC then the hard drive need to be reformatted using the Windows. If you format as a primary drive in FAT32 then the MAC can read and download files on this external drive so that a Windows PC or laptop can read. These files can be exchanged between MACs and PCs.
The Mac disk format cannot see or read by a PC, the PC can see the external drive as a device only.
The way around this problem is to format the external drive with the PC, now you can fransfer/copy files to the external drive and when you plug it into the Mac, the MAC can read PC file formats, this also applies to USB memory sticks.
You did not mention which Windows or Mac version you are running, but "in the good old days", all I did was to format the drive either as FAT32 (in Windows) or as MS-DOS (in Mac). Keep
volume/folder file names following Windows naming rules. Don't erase
any of the invisible files that will be visible on the opposite system
when running. MP3's will write/read fine for both OS.
You have not yet formatted the drive to work with you MAC. You will need to use your MAC's Disk Utility to format the drive in order to write to the drive, but be aware that formatting will erase everything already on the external drive, so back up anything on the drive you want to keep first.