Re: Rescue disk with parted utility for GPT label

[Rod Smith]

On 05/22/2012 12:00 PM, address@hidden wrote:
> Hello,
>
> I have one USB disk of 3 TB. It is devided into 2 partitions, 1.5 TB each
> with Linux type (id 83). When using fdisk I can see 2 partions as follows (*
> 1)*
> *Device         Boot    Start      End       Blocks            Id     System
> *
> /dev/sdb1               1           30000        ......
> 83      Linux
> /dev/sdb2               30001     45600      .......
> 83      Linux
>
> But when using the command "parted /dev/sdb1" in which I run "mklabel gpt
> /dev/sdb1", the last result I have as follow:
>   *Device         Boot    Start     End         Blocks         Id     System*
> /dev/sdb1
> 1       456001       ........           ee    EFI  GPT
>
> It looks like the second partion 2  (/dev/sdb2) is disappeared and the
> partition 1 become the whole disk with GPT label.

It appears that you applied your first (fdisk) command correctly to the 
whole disk device (/dev/sdb); but it appears that you applied your 
second (parted) command to the first partition on that device 
(/dev/sdb1). You need to apply parted to /dev/sdb.

That said, the "mklabel" command creates an entirely new partition 
table, so you shouldn't be using that command if you want to preserve 
your existing partitions.

--
Rod Smith
address@hidden
http://www.rodsbooks.com