Create a Bootable USB on OS X

[Moogs]

Not sure if this has even really been documented here before but to create a USB on OS X do the following. I've had to create these for Ubuntu and other XPE* bootloaders.

 

1. Download the fat img of the bootloader of choice, I believe ext2 fs is also ok, for say Nanoboot. Make a note of its path. In this example we'll say it's saved to the Desktop and we'll use NanoBoot-5.0.2.4-fat.img

2. Plug your USB drive in. It may behoove you to use disk utility to create a FAT formatted partition to ensure there aren't any funky old parition schemes on there.

 

Make it MBR:

 

Choose the following options:

 

Open terminal

 

1. Run

diskutil list

2. Locate your USB drive:

 

 

On the command line run:

 

pwd

should = /Users/

 

Unmount nanoboot parition:

 

diskutil unmount /dev/disk2s1

(changed disk2s1 to whatever is listed as the DOS_FAT_32 NANOBOOT disk, not partition.).

 

sudo dd if=~/Desktop/NanoBoot-5.0.2.4-fat.img of=/dev/disk2 bs=1m

 

15+1 records in

15+1 records out

16384000 bytes transferred in 21.031898 secs (779007 bytes/sec)

[Trantor]

Thanks

Sticky and moved to How to / Guide section

[Kanedo]

for faster writes, use /dev/rdisk# instead of /dev/disk# for the dd command

 

https://github.com/abock/image-usb-stick/issues/5

http://superuser.com/questions/631592/m ... n-dev-disk

 

From "man hdiutil"

DEVICE SPECIAL FILES
    Since any /dev entry can be treated as a raw disk image, it is worth not-
    ing which devices can be accessed when and how.  /dev/rdisk nodes are
    character-special devices, but are "raw" in the BSD sense and force
    block-aligned I/O.  They are closer to the physical disk than the buffer
    cache.  /dev/disk nodes, on the other hand, are buffered block-special
    devices and are used primarily by the kernel's filesystem code.

 

Example:

sudo dd if=~/Desktop/NanoBoot-5.0.2.4-fat.img of=/dev/rdisk2 bs=1m

[frozenstitches]

How can I either mount the .img or the USB disk for DSM 6 so I can edit the grub.cfg?

[Polanskiman]

frozenstitches said:

How can I either mount the .img or the USB disk for DSM 6 so I can edit the grub.cfg?

 

It's mentioned in the tutorial I created. Here is the link to the specific post: https://xpenology.com/forum/topic/6375-tutorial-installmigrate-dsm-52-to-60-juns-loader/?do=findComment&comment=57940

[fjf]

Polanskiman, the link to your post no longer works.  Can you fix it?.  Thanks.

On 3/18/2017 at 7:33 AM, Polanskiman said:

 

It's mentioned in the tutorial I created. Here is the link to the specific post: https://xpenology.com/forum/topic/6375-tutorial-installmigrate-dsm-52-to-60-juns-loader/?do=findComment&comment=57940

 

[Polanskiman]

Yes we are fixing all the links from the old forum.

[Polanskiman]

Link has been updated.

[Tensol]

I have used Etcher without any problems whatsoever on 3+ XPEnologies that I created myself or helped friends. Worth noting that I modified PID and VID by pressing "C" on the bootmenu of the loader.

 

https://etcher.io

 

Official website.

 

Disclosure: I`m have no affiliations or anything with them.