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I just attempted to create a USB key for Chrome OS. I followed the instructions found here. This is what I did:

1- Downloaded a .zip version of the build.

2- Extracted the .zip file which gave me a .img file.

3- Tried to burn the .img file to the USB key with the following command:

dd if=ChromeOS-Vanilla-3812.0.2013_03_08_1632-r10c5647c.img of=/dev/sdc1 bs=4M

4- That gave me a Permission denied error so I tried:

sudo dd if=ChromeOS-Vanilla-3812.0.2013_03_08_1632-r10c5647c.img of=/dev/sdc1 bs=4M

which seemed to work (at least it ended with a message that ~2.5Gb had been copied to the device)

But now if I insert the USB key the system does not recognize it anymore. I tried booting my laptop with that USB inserted but it did not pick it up either. Did I just destroy my 16Gb USB key?? Cheers.


Update: the Disk utility does recognize when the device is inserted. I tried to format the USB key with this app but got the error:

Error synchronizing after initial wipe: Timed out waiting for object (udisks-error-quark, 0)

Update 2: fdisk apparently also recognizes the device. The command sudo fdisk -l returns:

Dispositivo Inicio    Comienzo      Fin      Bloques  Id  Sistema
/dev/sdc1   *          32    31270911    15635440    c  W95 FAT32 (LBA)

(my system is in Spanish)

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1 Answer 1

Ok just fixed it. Found the answer in this question. I just had to run:

sudo mkfs -t vfat /dev/sdc1

and the USB key was recognized again.

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