On 04/22/2016 10:19 AM, Robert Nichols wrote: > On 04/22/2016 09:43 AM, g wrote: >> ]$ sudo blockdev --getalignoff /dev/sdc1 >> 0 >> ]$ sudo blockdev --getalignoff /dev/sdc2 >> 0 >> ]$ sudo blockdev --getalignoff /dev/sdc5 >> 2560 >> ]$ sudo blockdev --report /dev/sdc1 >> RO RA SSZ BSZ StartSec Size Device >> rw 256 512 4096 2048 838860800 /dev/sdc1 >> ]$ sudo blockdev --report /dev/sdc2 >> RO RA SSZ BSZ StartSec Size Device >> rw 256 512 4096 1640448 1048576000 /dev/sdc2 >> ]$ sudo blockdev --report /dev/sdc5 >> RO RA SSZ BSZ StartSec Size Device >> rw 256 512 4096 33848955 328282081792 /dev/sdc5 >> >> so, blockdev does not show end, but does confirm sdc5 start is off >> by 2560, same as fdisk. >> >> all of which indicates i should repartition drive with fdisk. >> >> is there any easier way such as using gparted or sparted so that >> partitioning will be by cylinder and not sector? > > You do not want to partition by cylinder. The CHS geometry that > fdisk reports has been meaningless on hard disks for at least the > last 10 years and bears no relationship to the actual cylinders on > the drive. At that arbitrary 255 heads 63 sectors/track geometry, > you might have to skip over 7 full "cylinders" to find one that > starts on a 4096-byte boundary. The version of fdisk in CentOS 6 > is old, and still defaults to the deprecated cylinder units. You > should always switch to sector units when using it. The warning > about partitions that do not start or end on a cylinder boundary > should be ignored. > ===> Robert, apologies for delay in replying. in checking back thru old threads before archiving, i found that i failed to thank you for reply. my apologies and thank you. -- peace out. CentOS GNU/Linux 6.8 tc,hago. g . =+= Tired of having your microsoft os hacked? Change to Linux os, used by microsoft hackers. =+= in a world with out fences, who needs gates. =+=