After using SSD on one of my PC and missing the blazingly fast speeds of it on my Apple Mac computer, I finally decided to get the iMac upgraded to SSD. To get data migrated from the old iMac Disk to my new Samsung EVO 850 SSD, I connected both to my other system running Windows 10. I installed and tried 3 popular data migration utilities on the Windows 10 PC which claimed to get the HDD to SSD migration job done, but all of them failed to recognise and clone the HFS+ (Mac OS X Partition) from the Bootcamped dual-boot configured iMac HDD.

Luckily, my memory served me on time and I went ahead using excellent, free "HDD Raw Copy Tool" utility for Windows to get the old HDD disk cloned as an exact one-to-one copy without any partition issue. We have used the same tool earlier to make compressed backup copies of Raspberry Pi SD-Card.

Once fully configured according to your custom needs it's a good idea to create an raw image backup of your Raspberry Pi SD Card setup, once backed-up a user simply need to re-image the card in-case the underlying operating-system or filesystem gets corrupted. There are various methods to backup and restore the Raspberry Pi SD card, we reviewed all and here are the best options to get the task completed in shortest time with smallest file-size.

The most widely used Windows utility for RAW image backups and restores Win32 Disc Imager is an easy to use option but the resulting file-size is bigger as it is uncompressed, using any popular compression format results in smaller backup size as shown below. However, this approach consumes more time and requires manual efforts twice.