topic Quote:NAGA VENKATA RAGHU in Software Archive

Error creating Live USB

NagaVenkat_K_Intel — Sun, 16 Mar 2014 09:09:14 GMT

Hi,

I have created a Live USB using dd and after a while the USB died. I tried using a different pen drive and while booting it always displays MBR 1FA. I tried reformatting but still not able to succeed. Tried googling but no success. Is the problem with USB or am I doing something wrong?

Regards,

Raghu Kona

Quote:NAGA VENKATA RAGHU

Brendan_L_Intel — Sun, 16 Mar 2014 10:55:43 GMT

NAGA VENKATA RAGHU KIRAN K. (Intel) wrote:

I have created a Live USB using dd and after a while the USB died. I tried using a different pen drive and while booting it always displays MBR 1FA. I tried reformatting but still not able to succeed. Tried googling but no success. Is the problem with USB or am I doing something wrong?

Can you post the exact dd command you are using? Few common issues:

no conv=fsync dd option and no `sync` done before unplugging USB stick for writing
wrote to partition instead of directly to device node (/dev/sdX1 vs correct /dev/sdX)
Image was not uncompressed (it's bz2 compressed so you need to `bunzip2` before writing
USB stick is too small
Image not fully downloaded

I am using this command

NagaVenkat_K_Intel — Mon, 17 Mar 2014 04:44:47 GMT

I am using this command

sudo dd if=devkit-live-img-final.binblob of=/dev/sdX bs=8M conv=fsync

Now I am getting a different error

dd: fsync failed for ‘/dev/sdb1’: Input/output error
955+0 records in
955+0 records out
8011120640 bytes (8.0 GB) copied, 692.881 s, 11.6 MB/s

- check the filesize of the

Matthias_H_Intel — Mon, 17 Mar 2014 05:22:16 GMT

- check the filesize of the image (ls -la devkit-live-img-final.binblob) and compare with the size of your flashdrive (sudo fdisk -l /dev/sd<X>)

> is you your flashdrive sufficiently large at all?

- I would need to check - but the bunzipped bz2 image I downloaded was about 4GB as far as I remember. I am a bit puzzled your image is that large

- it looks like you dd'ed to /dev/sdb1 rather than to /dev/sdb (" ‘/dev/sdb1’: Input/output error") which would be wrong

The size of the devkit-live

NagaVenkat_K_Intel — Mon, 17 Mar 2014 06:39:34 GMT

The size of the devkit-live-img-final.binblob file is 8011120640 my flash drive size is 16 GB (14.9).

The downloaded unzipped file size is 4521773191

When i type the command df -h, USB is represented as

/dev/sdb1 15G 1.1M 15G 1% /media/raghu/C065-8342

so I used /deb/sdb1

that means your flashdrive is

Matthias_H_Intel — Mon, 17 Mar 2014 06:43:13 GMT

that means your flashdrive is automounted. Pls unmount first (sudo umount /dev/sdb1) and then dd over to /dev/sdb rather than /dev/sdb1.

In order to use all your 16 GB you will have to resize the partition after dd'ing which is described in another IoT threa (e.g. using gparted)