What is a file system which has r/w on all OSes like windows, linux and Mac.
Windows comes with FAT and NTFS support and EXT3 support can be added. Never heard about Mac OS Extended on Windows .
Linux comes with EXT3/4 support and FAT and NTFS support can be added. Mac OS Extended w/o journaled has support according to the documentation, but only works as root user.
Mac comes with FAT and Mac OS Extended Support. and experimental NTFS support can be added (which does not work quite well. Knew it first hand) . There is no ext4 support for Mac. Unsure about ext3 .
I would like to know the best file system I could use my external hard disks, so that it works with r/w capabilities on Windows, Linux and Mac or at least Linux and Mac.
Answer
FAT32 would probably be your best bet, compatibility-wise. The only restriction is the ~4GB file size limit. With that aside, NTFS would be the best option if you planned on using file sizes > ~4GB, as r/w support is easily achievable on each of these operating systems and removes the low file size limitation.
- With Windows, you're already in the clear
- With Linux, most newer distributions come with the ntfs-3g driver as it is included in kernels 2.6 and above
- With Mac, you can install ntfs-3g
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