Diff between ext2 & ext3, ext4
Extended n file system ext2 : - Introduced with kernel 1.0 in 1993 - Flexible can handle upto 4TB - super block feature increase file system performance - ext2 reserve 5% of disk space for root - ext2 is popular on USB and other solid-state devices. This is because it does not have a journaling function. so it generally makes fewer reads and writes to the drive, effectively extending the life of the device . - NO journalalizm ext3 : - Provide all the feature of ext 2 + journaling and backward compatibility . - can upgrade ext2 to ext3 without loss of data. - journaling feature speed up the system to recover the state after power-failure or improper mount unmount etc. - Example: In ext2 in an improper unmount or in-between power-off etc.. so in time of receiver it checks whole file system . But in ext3 it keeps record of uncommitted file transactions and checks applied on on them so system will come back up in fa...