Backup a partition dd command can back up a partition if we specify the partition in the input file, and the output file can be the target path or image file. Backup the entire hard disk dd command can back up an entire copy of a hard disk to another hard disk connected to the same system. Some of the most common uses of the dd command are:ġ. conv - This option is used so that the process of copying continues even if there are any read errors.

count - This option is used to specify the number of blocks to be copied (by default, the dd command copies the entire file or disk)ĥ. bs - This option is used to specify the block size, i.e., number of bytes or kilobytes(k) or megabytes(m)Ĥ. if - This option is used to specify an output file or deviceģ. If - This option is used to specify an input file or deviceĢ. The basic dd command syntax consists of the following:ġ. By default, the dd command reads from stdin and writes to stdout these can be modified using its input file and output file options. The dd command's syntax differs from various other Unix programs, as it uses syntax option=value rather than the standard syntax -option value or -option=value formats. The result was that the usb was not bootable - in the loading screen pressing alt button - the usb does not show.Dd is a command-line utility for Linux and Unix systems whose primary purpose is to convert and create low-level file copy. The result was the expected message that usb could not be read.Ħ) ejecting the usb with: diskutil eject /dev/disk2 I also tried to us UDTO instead of UDRW.ģ) finding my usb location using diskutil list, it was /dev/disk2Ĥ) unmounting the usb: diskutil unmountDisk /dev/disk2ĥ) dding the image: sudo dd if=debian-8.4.0-i386-DVD-1.img of=/dev/disk2 bs=1m Any advice how can I debug why my usb did not becamse Debian bootable after those procedures.ġ)erase usb drive using disk utils and create FAT partition(i tried also exFAT and OSX Extended).Ģ) downloaded the iso and converted it to img: hdiutil convert debian-8.4.0-i386-DVD-1.iso -format UDRW -o debian-8.4.0-i386-DVD-1.imgĪnd renaming the result to remove the '.img' from name. Other distos have large amouts of troubleshooting this issue, but not debian.

It also seems seems several years old and outdated. Does not work(everything goes fine but usb does not become bootable).

How to create bootable usb mac on linux