36.4GB drive formats out to 32.8GB? what am I missing please
grep sectors /var/run/dmesg.boot
lists at dylangoss.com
Sun Jun 12 21:48:54 GMT 2005
> 36.4pseudomarketblahgigabytes=36400000000 bytes
> 1 real gigabyte is 2^30=1073741824 bytes and that's means your disk
> has 33.9 real Gigabytes.
> rest are what's used up by inodes and bitmaps.
Thank you Wojciech - this is clear for me now.
> please show the output of
> grep sectors /var/run/dmesg.boot
da2: 34715MB (71096320 512 byte sectors: 255H 63S/T 4425C)
da0: 17357MB (35548320 512 byte sectors: 255H 63S/T 2212C)
da1: 34715MB (71096640 512 byte sectors: 255H 63S/T 4425C)
The IBM drives I'm playing with are da1 and da2. Soon they will be
part of a RAID-5 array with four of these. da0 will go away as it's
U160/7200RPM and newer driver on bus are U320/15kRPM.
> In addition to that filesystem building, manufacturer's "formatted"
> is given in decimal so a Gigabyte...
> Then the system, by default reserves 8% of the filesystem for
> system overfill.
Thanks Jerry also for the explanation.
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