On Wed, Mar 28, 2012 at 1:10 PM, John Austin <ja at jaa.org.uk> wrote: >> > I have been using gdisk for at least a year on Centos and F15/F16 But that doesn't seem happy with MBR type disks. You don't need GPT unless the disk is bigger then 2 Gigs and 4k-sector drives start at 750G, at least in the laptop sizes. gdisk -l says this about a layout created by the Centos installer: Partition table scan: MBR: MBR only BSD: not present APM: not present GPT: not present *************************************************************** Found invalid GPT and valid MBR; converting MBR to GPT format. *************************************************************** Warning! Secondary partition table overlaps the last partition by 33 blocks! You will need to delete this partition or resize it in another utility. Disk /dev/sda: 262144000 sectors, 125.0 GiB Logical sector size: 512 bytes Disk identifier (GUID): 4E46CCD4-4010-401E-84A8-020B674DA64B Partition table holds up to 128 entries First usable sector is 34, last usable sector is 262143966 Partitions will be aligned on 2048-sector boundaries Total free space is 2014 sectors (1007.0 KiB) Number Start (sector) End (sector) Size Code Name 1 2048 1026047 500.0 MiB 8300 Linux filesystem 2 1026048 262143999 124.5 GiB 8E00 Linux LVM Is something really wrong with it?