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Sent from my iPhone
> On 6 Jun 2015, at 09:02, Eion MacDonald <eionmac@xxxxxxxxxxxxxx> wrote:
>
>
>
>> On 05/06/2015 20:29, alex wrote:
>> not sure if this would work but it might be worth a try,i have never
>> used on a usb key
>>
>> http://hddguru.com/software/HDD-LLF-Low-Level-Format-Tool/
>>
>>> On 05/06/2015 20:27, alex wrote:
>>> not sure if this would work but it might be worth a try,i have never
>>> used on a usb key
>>>
>>> http://hddguru.com/software/HDD-LLF-Low-Level-Format-Tool/
>
> Tried, a number of low level format tools including HDDGURU. No joy,
> These report 'unable to access disc' 'locked file system'
> --
a) is there a physical switch on the device, like a small slider or dip switch -
some devices like mmc:sdcards have these to force copy protection.
b) are trying to use these tools on the unmounted device ? ie plug in deivices show
as (commands to manage a raw disk wont work if its mounted)
/dev/sdXY (XY beign specific to your use case)
mounts to. for example. /media/myusb
Thus {all commands should be run as root}
run umount /dev/sdXY
cfdisk /dev/sdXY
or fdisk /dev/sdXY
print the partition table take note of layout
delete all partitions on the disk
go into expert mode , find the option to (re)create a dos partition table - do it -
this ensures any coruption in the table is removed,
write the changes to disk
wait a few mins then reboot - leave the disk inserted
as root again
type df to check nothing magic happened and the usb should not be mounted.
go back to cfdisk or fdisk /dev/sdXY
create 1 partition the full size of the disk
write it
reboot (keep disk in machine)
log in as root again
format the disk as vfat = extended dos ... if < 1gb
if > 1gb and only using on linux machines ext4 should work or brtfs
if > 1gb and using on multiple machines format the partition via windows for a more
consistent end result.
i dont recall the exact command but its something like this
mkfs.vfat /dev/sdXY
once formated you can then
mount /dev/sdXY -t vfat /media/myusb
ps on windows there is this command
format /mbr <driveletter>
which will do all of the above for you.
> regards
> Eion MacDonald
>
> --
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