hdc: [PTBL] [2495/255/63] hdc1, what is PTBL?

["Egor Tur" <worldeb@ukr.net>]

Hi.
I see when my system boot  up:
hda: 19932192 sectors (10205 MB) w/426KiB Cache, CHS=1240/255/63, UDMA(66)      
hdb: 44150400 sectors (22605 MB) w/1966KiB Cache, CHS=2748/255/63, UDMA(33)     
hdc: 40088160 sectors (20525 MB) w/1961KiB Cache, CHS=39770/16/63, UDMA(33)     
Partition check:                                                                
 hda: hda1 hda2 hda3 < hda5 hda6 hda7 hda8 hda9 hda10 >                         
 hdb: hdb1                                                                      
 hdc: [PTBL] [2495/255/63] hdc1
         ^^^^^
     what is this?
Thanx.