Dhayi dzose uye madhiyo akaoma zvakakamurwa kuva maduku maduku. Nzvimbo yekutanga inonzi bhoot sector uye ine Master Boot Record (MBR). Iyo MBR ine ruzivo pamusoro pekugovana kwezvikamu pamusana wekutya uye kuverenga kwebato rekushandisa rinoshandiswa. Munguva yebhootup sequence pane DOS-based PC, BIOS inotsvaga mamwe mafaira ehurongwa, IO.SYS uye MS-DOS.SYS. Apo mafaira aya ave akawanikwa, BIOS inotsvaga iyo yekutanga pane iyo disk kana kuti motokari uye inotakura zvidzidzo zveBhuku raMadzi Boot rinodiwa mumusoro. BIOS inopfuurira kutora purogiramu muBMBR iyo inotakura IO.SYS. Iyi yekupedzisira faira inoshandiswa pakuteerera zvakasara zvehutano hwekushandisa .
Chii chinonzi Boot Sector Virus?
Ivharesi yebato rekudzivirira ndeyeyo inokonzera chikamu chekutanga, kureva chikamu chebhoti , ye floppy disk kana dhigori. Zvirwere zvepamuviri zveBoot zvinogonawo kutapudza MBR. Chekutanga PC virusi mumusango yaiva Brain, chirwere chebato rekudzivirira chinoratidza maitiro ekunyengera kuti arege kuonekwa. Ubongo hwakashandurawo ivheti yeti disk drive.
Nzira Yokudzivirira Bhoot Sector Viruses
Kazhinji, zvipembenene zvine utachiona uye hutachiona hwehutachiona hwehutachiona hunokonzerwa ne "vakagovana" diskettes uye pirated software applications. Izvo zviri nyore kudzivirira mavhamusi emabhoot. Yakawanda inopararira apo vashandisi vasingazivi kuti vanosiya floppy disks mumotokari - izvo zvinoitika kuti vane utachiona hwehutachiona hwehutachiona . Nguva inotevera pavanotanga PC yavo, hutachiona hunopinza gwara remukati. Nenzira dzakawanda dzinobvumira vashanduri kuchinja mararamiro ehutano kuitira kuti urongwa hunoedza nguva dzose kutanga boot kubva kunzvimbo yakananga yedhira (C: \) kana CD-ROM motokari.
Kuchengetedza Dhizinesi Boot Sector Viruses
Boot sekugadzirisa sarudzo inopedzerwa nekushandiswa kwehutachiona hwemapurisa . Nemhaka yokuti mamwe mavharesi emakotanga anoshandisa MBR, kubviswa kusina kunaka kunogona kukonzera motokari isingasvikiki. Zvisinei, kana uri chokwadi kuti hutachiona hwave hunochinja hutachiona hwehutachiona uye hahusi hutachiona hwekuvhara, mutemo weDOS SYS unogona kushandiswa kugadzirisa chikamu chekutanga. Uyezve, mutemo weDOS LABEL unogona kushandiswa kugadzirisa dambudziko rakaparadzwa uye FDISK / MBR ichadzorera MBR. Hapana imwe yenzira idzi inokurudzirwa, zvakadaro. Antivirus software inoramba iri chinhu chakanakisisa chekushandisa zvakachena uye zvakanyatsobvisa mavhamusi emabhiotisi nekutyisidzira kudhe data uye mafaira.
Kuumba Dhidhi Disk
Paunenge uchiita majekiseni chirwere chebhoot sector, chirongwa chacho chinofanira kugara chichibva pane inozivikanwa yakachena disk. Pane DOS-based PC, bhootable system disk inogona kusikwa pane yakachena system inoshandisa iyo chaiyo yeDOS sePC inotapukira. Kubva paDOS nokukurumidza, tanga:
- SYS C: \ A: \
uye chengetedza kupinda. Izvi zvichafananidza mafaira emasitemu kubva munzvimbo yakananga dhirairi (C: \) kuenda ku floppy drive (A: \).
Kana iyo diski isati yasimbiswa, kushandiswa kweFOMMAT / S kuchagadzirisa disk uye kuendesa mafaira emasikirwo anodiwa. PaWindows 3.1x system, diski inofanira kusikwa sezvinotsanangurwa pamusoro apa yeDOS-based PC. PaWindows 95/98 / NT nyanzvi, tanga Start | Zvirongwa | Control Panel | Wedzera / Bvisa Zvirongwa uye sarudza Startup Disk tab. Zvadaro chofa pa "Dza Disk". Vashandisi veWindows 2000 vanofanira kuisa Windows 2000 CD-ROM mumutambo weCD-ROM, tanga Start | Mhanya uye taura zita rekufambisa rakateverwa na bootdisk \ makeboot a: uye ipapo tora OK. Semuyenzaniso:
- d: \ bootdisk \ makeboot a:
Tevera chinyorwa chinokurudzira kupedza kugadzira bootable system disk. Muzviitiko zvose, mushure mekusikwa kwebhootable system disk, disk inofanira kunyorwa-kuchengetedzwa kuti isapinda utachiona.