how to erase a GPT partition table under linux

Install sgdisk if you don’t already have it:
```
apt-get install sgdisk
```
Figure out which disk you are working on (here we assume sdb):
```
dmesg|grep sd
umount /dev/sdb*
```
To just get rid of the GPT:
```
sgdisk -z /dev/sdb
```
To get rid of the GPT and MBR:
```
sgdisk -Z /dev/sdb
```

Published by neil