How can I determine the space/size of my drive programatically? Both in LInux and on Windows

Question

That is : How can I check the drive size which is not formatted... Don't consider the formatted drives...just unformatted drive.

Answer 1

Under Linux, if you want the size of the entire drive, read /sys/block/sda/size.

To find the size of a partition, read /sys/block/sda/sda1/size.

Replace sda, sda1 with names of your devices/partitions.

Or, if you can open the raw device file, you can use the BLKGETSIZE ioctl.