Parapanw, eidame oti th domh toy MBR (tomeas 0): kwdikas toy fortwth akoloy8oumenos apo 4 eggrafes katatmhsewn 16 byte h ka8e mia, akoloy8oumeno apo to AA55 apotupwma. Katatmhseis tupoy 5 h F h 85 (dekaejadiko) exoyn eidikh shmasia: perigrafoyn ektetamenes katatmhseis: kommatia toy diskoy poy 8a katatmh8oun se logikes katatmhseis. (Etsi, mia ektetamenh katatmhsh einai apla ena doxeio, de mporei na xrhsimopoih8ei apo monh ths, alla mesw twn logikwn katatmhsewn poy periexei.) Mono h topo8esia toy prwtoy tomea mias ektetamenhs katatmhshs einai shmantikh. Aytos o prwtos tomeas periexei enan pinaka katatmhsewn me 4 eggrafes: mia logikh, mia ektetamenh kai dyo axrhsimopoihtes. Me ayton ton tropo mporei na dhmioyrgh8ei mia alysida pinakwn skorpismenh pantou ston disko, opoy o prwtos pinakas perigrafei treis prwtarxikes katatmhseis kai mia ektetamenh, kai ka8e epomenos pinakas perigrafei mia logikh katatmhsh kai ton tomea toy epomenoy pinaka.
Einai shmantiko na to katalabete ayto: Otan kapoios xrhsths kanei kapoia blakeia xwrizontas ton disko toy, 8elei na jerei: Einai ta dedomena moy akoma ekei; H apanthsh einai synh8ws nai. Alla an dhmioyrgh8hkan logikes katatmhseis, tote oi pinakes poy perigrafoyn tis katatmhseis aytes grafthkan sthn arxh twn katatmhsewn aytwn kai ta dedomena poy yphrxan ekei xa8hkan.
To sfdisk 8a deijei olh thn alysida. p.x.,
# sfdisk -l -x /dev/hda
Disk /dev/hda: 16 heads, 63 sectors, 33483 cylinders
Units = cylinders of 516096 bytes, blocks of 1024 bytes, counting from 0
Device Boot Start End #cyls #blocks Id System
/dev/hda1 0+ 101 102- 51376+ 83 Linux
/dev/hda2 102 2133 2032 1024128 83 Linux
/dev/hda3 2134 33482 31349 15799896 5 Extended
/dev/hda4 0 - 0 0 0 Empty
/dev/hda5 2134+ 6197 4064- 2048224+ 83 Linux
- 6198 10261 4064 2048256 5 Extended
- 2134 2133 0 0 0 Empty
- 2134 2133 0 0 0 Empty
/dev/hda6 6198+ 10261 4064- 2048224+ 83 Linux
- 10262 16357 6096 3072384 5 Extended
- 6198 6197 0 0 0 Empty
- 6198 6197 0 0 0 Empty
...
/dev/hda10 30581+ 33482 2902- 1462576+ 83 Linux
- 30581 30580 0 0 0 Empty
- 30581 30580 0 0 0 Empty
- 30581 30580 0 0 0 Empty
#
Einai dynaton na dhmioyrgh8oun xalasmenoi pinakes. Polloi pyrhnes mpainoyn se kuklo an kapoia ektetamenh katatmhsh deixnei pisw ston eayto ths h se prohgoumenh katatmhsh sthn alysida. Einai dynaton na yparxoyn duo ektetamenes katatmhseis se kapoion pinaka wste h alysida na xwrizei. (Gia paradeigma, ayto mporei na symbei an ena fdisk den anagnwrizei ta 5, F, 85 ws ektetamenoys tupoys kai dhmioyrghsei ena 5 dipla se ena F.) Kanena koino fdisk de mporei na xeiristei tetoies katastaseis, opote xreiazetai ligh doyleia me to xeri gia na dior8w8oun. O pyrhnas toy Linux 8a dextei mia xwrismenh alysida se ejwteriko epipedo. Dhladh, mporeite na exete dyo alysides gia logikes katatmhseis. Merikes fores ayto einai xrhsimo, afou mporeite na exete tupo 5 gia to DOS kai tupo 85, aorato sto DOS, gia to Linux, wste to fdisk toy DOS na mhn kollhsei epeidh oi katatmhseis sas einai peran twn 1024 kylindrwn.