0
If I run:
sudo dd if=/dev/sda1 of=~/image.img bs=1M
Will the image.img (which is located on /dev/sda1) be continuously copied onto itself? As it gets bigger from data, will that additional data be written in the image and continue forever?
agz
Posted 2013-01-13T03:55:48.200
Reputation: 6 820
1
No, you will run out of disk space before the operation completes. The disk image image.img will be unusable.
Michael Hampton
Posted 2013-01-13T03:55:48.200
Reputation: 11 744
0
Imagine an object trying to eat itself. To contain itself in addition to itself it must be at least twice as big.
Nothing can be twice as big as itself. :) – Michael Hampton – 2013-01-13T19:22:50.247
Hence we have a contradiction! – None – 2013-01-13T21:35:06.937
Oh! Wow i completely overlooked that. But technically if lets say the image.img was stored near the beginning of the block of the hard drive, would the image copy itself, or is there a RAM buffer of sorts – agz – 2013-01-13T18:49:59.000
1Yes, you might get a partial copy of
image.imgin the image itself. No, it won't go on indefinitely. – Michael Hampton – 2013-01-13T18:55:37.207