Lub rooj muab faib tus tswv yog ib feem ntawm cov ntaub ntawv sau npe / ntu uas muaj cov lus piav qhia ntawm cov partitions ntawm lub hard disk drive, zoo li lawv hom thiab ntau thiab tsawg. Lub rooj muab faib ua ke nrog rau daim disk kos npe thiab tus tswv boot code los tsim cov ntaub ntawv sau tus tswv.
Vim qhov loj me (64 bytes) ntawm lub rooj muab faib tus tswv, qhov siab tshaj plaws ntawm plaub ntu (16 bytes txhua) yuav raug txiav txim siab ntawm lub hard drive. Txawm li cas los xij, cov partitions ntxiv tuaj yeem teeb tsa los ntawm kev txhais ib qho ntawm lub cev partitions ua ib qho kev faib txuas ntxiv thiab tom qab ntawd txhais cov ntsiab lus ntxiv rau hauv qhov txuas ntxiv ntawd.
Free disk faib cov cuab yeej yog ib txoj hauv kev yooj yim los tswj cov kev faib tawm, kos cov kev faib ua "Active," thiab ntau dua.
kab hauv qab
Lub rooj muab faib tswv yog qee zaum hu ua lub rooj muab faib lossis faib daim ntawv qhia, lossis tseem hu ua MPT.
Master Partition Table Structure and Location
Cov ntaub ntawv khau raj tus tswv suav nrog 446 bytes ntawm cov lej, ua raws li cov lus muab faib nrog 64 bytes, thiab qhov seem ob bytes tau tshwj tseg rau daim disk kos npe.
Ntawm no yog cov dej num tshwj xeeb ntawm txhua 16 bytes ntawm lub rooj muab faib ua tswv:
| Size (Bytes) | |
| 1 | No muaj daim ntawv khau raj |
| 1 | Pib taub hau |
| 1 | Pib ntu (thawj rau lub ntsis) thiab pib lub tog raj kheej (siab dua ob qhov) |
| 1 | Lub byte no tuav qis yim ntawm lub tog raj kheej pib |
| 1 | No muaj hom muab faib |
| 1 | |
| 1 | Ending sector (thawj rau lub ntsis) thiab xaus lub tog raj kheej (siab dua ob ntsis) |
| 1 | Lub byte no tuav yim qis ntawm lub tog raj kheej kawg |
| 4 | Lwm sectors of partition |
| 4 | Number of sectors in the partition |
Daim ntawv lo khau raj yog qhov tshwj xeeb tshaj yog thaum muaj ntau tshaj ib qho kev khiav hauj lwm nruab rau ntawm lub hard drive. Txij li thaum muaj ntau tshaj ib qho kev faib ua feem, daim ntawv khau raj tso cai rau koj xaiv qhov OS rau khau raj rau.
Txawm li cas los xij, lub rooj muab faib ib txwm ua raws li ib qho kev faib tawm uas ua haujlwm raws li "Active" ib qho uas tau booted rau yog tias tsis muaj lwm txoj kev xaiv.
Cov kev faib faib ntu ntawm lub rooj muab faib yog hais txog cov ntaub ntawv hauv qhov muab faib, qhov twg 06 lossis 0E muab faib ID txhais tau tias FAT, 0B lossis 0C txhais tau tias FAT32, thiab 07 txhais tau tias NTFS lossis OS/2 HPFS.
Nrog ib qho kev faib uas yog 512 bytes rau txhua qhov chaw, koj yuav tsum tau muab cov lej tag nrho los ntawm 512 kom tau tus lej ntawm bytes ntawm tag nrho cov muab faib. Tus lej ntawd tuaj yeem muab faib los ntawm 1, 024 kom tau tus lej rau hauv kilobytes, thiab tom qab ntawd dua rau megabytes, thiab dua rau gigabytes, yog tias xav tau.
Tom qab thawj qhov kev faib tawm, uas yog offset 1BE ntawm MBR, lwm qhov muab faib cov rooj rau qhov thib ob, thib peb, thiab thib plaub thawj faib, yog ntawm 1CE, 1DE, thiab 1EE:
| Hex | Length (Bytes) | ||
| 1BE - 1CD | 446-461 | 16 | Pib Partition 1 |
| 1CE-1DD | 462-477 | 16 | Pib Partition 2 |
| 1DE-1ED | 478-493 | 16 | Pib Partition 3 |
| 1EE-1FD | 494-509 | 16 | Pib Partition 4 |
Koj tuaj yeem nyeem hex version ntawm tus tswv muab faib lub rooj nrog cov cuab yeej xws li wxHexEditor thiab Active@ Disk Editor.
