4 ms·
It’s considerably older than Ext4 though.
by achamayou 9y ago
It’s considerably older than Ext4 though.
- microcolonel 9y agoExt2 (closest equivalent to the first version of HFS+, which shipped in 1998 with no journaling support on Mac OS 8.1) was released in 1993. Ext3 could be considered an equivalent jump to the first HFS+ version with journaling. Both HFS+ and Ext3 extended a previously non-journaling filesystem with journaling. Ext4 is fully compatible with Ext3 images (and is in fact the default codebase for mounting Ext3 volumes on linux), but Ext3 is not fully compatible with all Ext4 images (but potentially compatible with some). Likewise, HFS+ tends to be backwards compatible with images, but old HFS+ is not forward compatible. I think it's a fairer comparison than you might imagine.