Ukuthola I-Medical Imaging (ama-DICOM CDs) kanye Nezingobo Zomlando Zomndeni ezivela Kumadiski Angafundeki¶

Kumbalwa ukwehluleka kwezobuchwepheshe okucindezela kakhulu kunokuya ku-oncology ephuthumayo, i-neurosurgery, noma ukubonisana namathambo ephethe i-CD-R eshiswe esibhedlela noma i-DVD-R ye-MRI, CT, noma i-PET scan yakho, kuphela ukuze ikhompuyutha kadokotela iqandiswe, igaye i-optical drive yayo, futhi ivele "I-Cyclic Redundancy Check (CRC) Iphutha Ledatha," "Idiski oyifakile ibingafundeki yile khompyutha," noma ibonise okungenalutho ngokuphelele 0 Bytes idiski. Usizi olufanayo luhlasela imindeni edonsa i-DVD-R yomshado eneminyaka engu-15 ubudala, i-MiniDVD yefilimu yasekhaya ku-camcorder, noma ikhophi yasenqolobaneni ye-Blu-ray ekhabetheni bese ithola ukuthi imihuzuko, iseshini engaphothuliwe, noma i-organic dye oxidation ("i-disc rot") ivimbela i-Windows Explorer ne-macOS Finder ekukopisheni amafayela.

Ungalilahli idiski, ungalisuli libe yindilinga ezungeze iringi, futhi ungalokothi ugcobe umuthi wamazinyo wasendlini, amakhasi kabhanana, noma i-acetone endaweni ye-polycarbonate. Abaphathi befayela besistimu yokusebenza ejwayelekile (explorer.exe futhi Finder) khipha lonke ifayela le-multi-gigabyte ukudlulisa ngokushesha lapho lishaya elingafundeki 2,048-byte sector, kanye namadrayivu e-USB optical aphathwayo amancane anezithonjana ze-laser ezinamandla aphansi eziyeka kalula. Ngokuqonda ukuthi izingqimba ze-optical disc zisebenza kanjani, ukuhlanza ngokushintshashintsha ukusuka kuhabhu kuye kunqenqema, kusetshenziswa i-multi-drive pass ukuhlanganisa ne-GNU ddrescue, IsoBuster, noma dvdisaster, nokubuka ezokwelashwa ezisindisiwe .DCM (DICOM) izingcezu kusibukeli esizimele lapho isibhedlela sihlanganisiwe .exe ukuphahlazeka kwezibukeli, ungabuyisa amaphesenti angama-95 kuye kwayi-100 wokuskena kwakho kwezokwelapha noma izingobo zomlando zomndeni.

Yenza lokhu manje¶

1. Khipha idiski ngokushesha bese uliphakamisela ekukhanyeni kwegumbi elikhanyayo noma isibani sosilingi ukuze uhlole ukuthi "Amaphinikhodi e-Foil Aseceleni Okuphezulu" vs. "Iziklwebhe zePlastiki Eseceleni Ezansi." Ku-CD evamile noma i-CD-R, ungqimba lwensimbi olubonakalayo oluntekenteke nedatha luhlala ngaphansi kwesokudla ngaphansi kwelebula ephezulu ephrintiwe (kuphela 0.01 millimeters / 0.0004 inches ukujula), kanti uhlangothi olungezansi olucwebezelayo luwugqinsi 1.2 millimeter (0.047 inch) sula i-polycarbonate lens. Uma ukukhanya kukhanya ngokuklwebheka ku-uhlangothi lwelebula eliphezulu lwe-CD, ungqimba olukhanyayo alukho kulezo zindawo futhi akumele lungenwe; uma imihuzuko iku-uhlangothi oluphansi olucwebezelayo, i-laser imane ihlehle i-scuff yepulasitiki engadlulwa ngokubona noma ipholishwe.
2. Yeka ukuzama ukuhudula bese uwisa amafolda ku-Windows File Explorer noma i-macOS Finder. Uma i-File Explorer ihlangabezana nomkhakha owodwa oklwetshiwe (2 KB) phakathi nendawo a 500 MB ividiyo noma uchungechunge lwe-DICOM, iphinda izame indawo efanayo izikhathi ezingu-10, ishise idiski, ilengise ikhompuyutha yakho imizuzu emi-5, futhi isuse ingxenye yekhophi ngokuphelele. Kumelwe usebenzise umfanekiso we-forensic oweqa umkhakha (GNU ddrescue noma i-IsoBuster*) ekopisha wonke amaphesenti angu-99.9 emikhakha enempilo kuqala futhi igcwalise igebe elincane elingu-2 KB ngoziro ukuze izingcezu zakho zezokwelapha noma amavidiyo asale evulekile.
3. Sula indawo engezansi ecwebezelayo ngokuqinile emigqeni eqondile ukusuka embotsheni emaphakathi ukuya ngaphandle ukuya onqenqemeni olungaphandle (njengezipoki zesondo), UNGALOKOTHI ngokunyakaza okuyisiyingi. Amathrekhi edatha abonakalayo agijima ngokujiya okugxilile okuqinile kusukela kuhabhu engaphakathi ngaphandle. Ukwesula embuthanweni kudala ukuklobha okude okugobile okulandela ithrekhi yedatha eyodwa ezinkulungwaneni zamabhithi alandelanayo, kucekele phansi idrayivu Ikhodi Ephambanayo Yomhlanga-kaSolomoni (CIRC) ukulungiswa kwephutha. Ukuklwebheka kwe-radial eqondile kweqa ithrekhi ngayinye ngama-micrometer ambalwa kuphela, lapho ukulungiswa kwephutha lezingxenyekazi zekhompuyutha kulungiswa ngokuzenzakalelayo.
4. Uma i-CD ye-Medical Imaging yasesibhedlela (DICOM) ivula kukhompuyutha yakho, noma uma kuphela izinqwaba Autorun / Viewer.exe uhlelo luyaphahlazeka ku-Windows 11 noma i-macOS, shaya indiva uhlelo lokubuka esibhedlela ngokuphelele. Yonke i-MRI, i-CT, ne-X-ray yasesibhedlela igcina izithombe zakho zangempela zezokwelapha njengezingajwayelekile .DCM amafayela (noma amafayela anezinombolo ezingenasandiso) ngaphakathi kwefolda ebizwa DICOM, IMAGES, noma EXPORT eceleni kwefayela lenkomba eliyinhloko elibizwa ngokuthi DICOMDIR. Kopisha leyo folda uyisuse kudiski bese uyivula kusibuki sesimanje somtholampilo samahhala (Horos ku-macOS, MicroDicom noma RadiAnt ku-Windows, noma Weasis cross-platform).
5. Shintsha kusuka kudrayivu eshibhile encane ye-USB yekhompuyutha ephathekayo uye kudrayivu yokubona ye-SATA yedeskithophu enosayizi ogcwele engu-5.25-intshi (noma hlola kumadrayivu emikhiqizo ehlukene angu-2 ukuya kwangu-3). Amadrayivu e-USB aphathekayo amancane asebenzisa amalensi epulasitiki amancane nama-lasers e-compromise ane-wavelength eyodwa. Idrayivu yedeskithophu enosayizi ogcwele (LG, Pioneer, ASUS, Plextor) inama-servos okulandelela aqinile, ukulungiswa okungcono kakhulu kwe-laser, kanye nama-algorithms e-firmware ahluke ngokuphelele okuthola amaphutha, ngokuvamile afunda idiski "elifile" emzamweni wokuqala.
6. Uma idiski kuyi-CD ye-DICOM Yesibhedlela edingekayo ukuze uhlinzwe namuhla futhi i-disc ngokwayo iqhekekile noma yehlisiwe yiyo yonke idrayivu, shayela isikhungo sokuthwebula izithombe. Film Library / Radiology Medical Records ngokushesha bese ucela i-electronic PowerShare / Ambra / LifeImage / Patient Portal isixhumanisi samafu. Cishe zonke izibhedlela zesimanje ze-PACS (Picture Archiving and Communication System) ingaphusha isifundo sakho sangempela se-DICOM nge-elekthronikhi esibhedlela sikadokotela ohlinzayo ngemizuzu eyi-10 ngaphandle kokudinga i-CD yangempela.

flowchart TD
    A["I-CD engafundeki, i-DVD, i-Blu-ray, noma iDiskhi ye-DICOM Yesibhedlela"] --> B{"Ingabe i-disc iphukile ngokomzimba kusuka kuhabhu ephakathi?"}
    B -->|"Yebo: Ukuqhekeka kwe-radial yesakhiwo"| C["UNGAFIKI kunoma iyiphi idrayivu: Isivinini esiphezulu (10,000 RPM) sizophahlaza idiski ngaphakathi kwedrayivu."]
    B -->|"Cha: Idiski ye-polycarbonate eqinile"| D["Hlola ngokumelene nokukhanya + Hlanza ngokukhazimulayo (maphakathi kuya onqenqemeni olungaphandle) ngensipho ethambile, amanzi, ne-microfiber"]
    D --> E{"Ingabe lesi i-Hospital Medical Scan (i-MRI / CT / X-Ray DICOM CD)?"}
    E -->|"Yebo: I-CD ye-DICOM yasesibhedlela"| F{"Ingabe idiski ifakwa kudrayivu, noma i-Viewer.exe kuphela ehlulekayo?"}
    F -->|"I-Disc iyakhweza, kodwa i-Viewer.exe iyehluleka noma uku-Mac"| G["I-Bypass Viewer.exe: Vula ifayela le-'DICOMDIR' noma ifolda ethi 'DICOM/' ngokuqondile ku-Weasis, Horos (Mac), noma i-MicroDicom (Windows)"]
    F -->|"Idiski ngeke ikhwezwe noma yehluleke phakathi nekhophi ngephutha le-CRC"| H["Imikhakha yesithombe eluhlaza kusetshenziswa i-GNU ddrescue (-b 2048) noma i-IsoBuster kuwo wonke amadrayivu optical angu-1 ukuya kwangu-3"]
    E -->|"Cha: I-DVD yomndeni, i-Camcorder MiniDVD, iCD yesithombe, noma i-Blu-ray"| H
    H --> I["Khipha noma ukhiphe isithombe se-.iso esisindisiwe nge-IsoBuster / 7-Zip / VLC / dvdisaster"]

I-matrix yokuxilonga: ukuqonda i-optical disc anatomy nezindlela zokwehluleka¶

Akuwona wonke ama-optical discs akhiwe ngendlela efanayo. Ngaphambi kokuzama noma yikuphi ukuhlanza ngokomzimba noma ukupholisha, thola ukuthi ingabe uphethe CD, DVD, noma Blu-ray (BD), ngoba ukujula kwesendlalelo sedatha yabo nokuba sengozini kokupholishwa kwendawo kuphambene ngokuphelele:

Isigaba 1: Ukusindisa Ama-CD Esithombe Sezokwelapha Esibhedlela (DICOM I-MRI, CT, PET, nama-X-Ray Discs)¶

Iziguli ngokuvamile zinikezwa i-CD-R noma i-DVD-R ngemva kwe-MRI, i-CT scan, i-ultrasound, noma i-mammogram futhi zitshelwe ukuthi ziyilethe ekuqokweni kwazo okukhethekile. Uma ufaka lelo disiki lesibhedlela kukhompyutha yakho ephathekayo yasekhaya noma i-PC yehhovisi likadokotela, kuba nezinkinga ezintathu ezihlukene, futhi ezimbili zazo azihlangene nalutho nediski eyonakele:

Inkinga 1: Ufake I-CD Yesibhedlela ku-Apple Mac (noma i-Windows 11 PC), futhi Uhlelo Lwezibukeli Ngeke Luvule.¶

Amaphesenti angama-95 wezibasi ze-CD zasesibhedlela (i-Codonics, i-Rimage, i-Epson PP-100, i-PacsGear) ishisa uhlelo oluncane lokubuka lwe-Windows lwe-32-bit (Viewer.exe, eFilmLite.exe, Carestream.exe, Sectra.exe, noma Philips iSite) kumsuka wediski. * Ku-macOS: Ama-Mac awakwazi ukusebenzisa iWindows .exe amafayela, ngokuchofoza kabili ngakho Start.exe noma Autorun.inf akenzi lutho noma avule ifayela lombhalo. * Ku-Windows 11: Izibukeli eziningi ze-CD zasesibhedlela ezindala zithembele ku-32-bit Java, ActiveX, noma izingxenye ze-DirectX 9 zefa eziphahlazeka ngokushesha kumasistimu we-Windows 11.

I-60-Second Clinical Fix: Vula i-Raw DICOMDIR / .DCM Amafayela kusibuki samahhala se-DICOM somdabu¶

Iskena sakho sezokwelapha akusi sikhiyelwe ngaphakathi kwalokho okuphukile .exe uhlelo. Ngomthetho wezokwelapha wamazwe ngamazwe kanye ne-NEMA PS3 / ISO 12052 DICOM Standard, yonke i-CD yesibhedlela igcina izingcezu zakho zezokwelapha ezingalahleki, ezinokulungiswa okugcwele kwe-16-bit ngaphakathi kwefolda evamile kudiski: 1. Vula i-CD/DVD ku-Windows File Explorer noma i-macOS Finder bese ubheka ifayela elinegama DICOMDIR noma ifolda ebizwa DICOM, IMAGES, DCM, noma EXPORT. 2. Kopisha yonke leyo folda (kanye ne- DICOMDIR ifayela) isuse i-CD enensayo ingene kufolda entsha kudeskithophu yekhompyutha yakho (-/Desktop/My_MRI_Scan/). 3. Dawuniloda futhi uvule eyodwa yalezi zibukeli ezithenjiwe, zamahhala ze-DICOM futhi uhudule bese uwisa eyakho DICOM ifolda efasiteleni: * I-Cross-Platform (Windows, macOS, Linux): Weasis Medical Viewer (isibukeli somtholampilo samahhala, esinomthombo ovulekile esisetshenziswa izibhedlela emhlabeni wonke; isekela ukwakhiwa kabusha kwezinhlelo eziningi ze-3D MPR kanye nokuqhathanisa kochungechunge lwezinhlangothi). * i-macOS Kuphela: Horos noma I-OsiriX Lite (izindawo zokusebenza zomdabu ze-macOS radiological). * IWindows Kuphela: MicroDicom noma RadiAnt DICOM Viewer (engasindi, iyaphatheka, ivula noma iyiphi i-CD yasesibhedlela ngemizuzwana emi-2 futhi ikuvumela ukuthi ukhiphe izingcezu ezithile njengeJPEG/MP4 uma kudingeka kuyilapho ulondoloza eluhlaza. .DCM ifolda kadokotela wakho).

Inkinga 2: I-CD Yesibhedlela iyaboniswa 0 Bytes ("Idiski Elingenalutho") noma Icela Ukuyifometha¶

Kungani i-CD yasesibhedlela eshiswe ngokucacile (ungabona indandatho eshile kakhudlwana endaweni ecwebezelayo engezansi) ivela njenge-CD engenalutho kukhompyutha yakho? * Imbangela: Isishisi sediski sikachwepheshe we-radiology usebenzise Ukubhala Iphakethe Lephakethe le-UDF noma kukhishwe isivimbeli ekupheleni kokusha futhi akazange abhale Ithebula Lokuqukethwe Le-Lead-Out / Session yokuvala (TOC). Ngoba iWindows ne-macOS zibheka kuphela isikhombi seseshini esiqediwe se-ISO-9660 / Joliet / UDF, bacabanga ukuthi idiski ayinalutho. * Lungisa: Vula idiski ngaphakathi IsoBuster (IWindows, imahhala ukuhlola futhi iklanyelwe ngokukhethekile ukukhweza izikhathi ezingakaphothulwa zezokwelapha nezekhamera yekhamera). I-IsoBuster iyiziba i-Lead-Out TOC engekho, iskena ngqo i-Optical Track 01 eluhlaza, ithole indawo DICOMDIR futhi .DCM amafayela, futhi uwakhiphe ngokuhlanzekile kusigcinalwazi sakho.

Inkinga 3: Ukukhiqiza Ifu Eliphathekayo noma Ikhophi ye-USB Yodokotela Ohlinzayo Ngaphambi Kokuqokwa Kwakho¶

Ungalokothi ungene engxoxweni ebaluleke kakhulu yokuhlinzwa noma ye-oncology ephethe kuphela i-CD-R yepulasitiki engahloliwe kumkhono wephepha. Amakhompiyutha amaningi esimanje egumbi lokuhlolwa emtholampilo aneklayenti elincane awasenawo nhlobo amadrayivu e-CD/DVD akhelwe ngaphakathi: 1. Faka i-CD yasesibhedlela ekhaya ngosuku olwandulela ukuqokwa kwakho bese ukopisha yonke impande yemibhalo ye-CD (kuhlanganise DICOMDIR, i DICOM/ ifolda, kanye nefolda yezibukeli zesibhedlela) kufomethwe kabusha FAT32 / exFAT USB flash drive. 2. Qinisekisa ukuthi i- .DCM izithombe zivuleka kahle kokuthi Weasis noma MicroDicom, futhi ulethe kokubili i-CD yasesibhedlela yoqobo kanye nedrayivu yakho ye-USB ehloliwe ku-aphoyintimenti.

Isigaba sesi-2: Ukuhlanzeka okuphephile komzimba nokulungisa ukuklwebheka kokubona (Yini Esebenzayo vs. Yini Ebhubhisa Amadiski)¶

Uma i-CD noma i-DVD yakho ihluleka nge Funda Amaphutha / CRC Amaphutha ngenxa yezigxivizo zeminwe, inkungu, noma imihuzuko engaphansi, hlanza futhi uphathe isendlalelo selensi ye-polycarbonate ngezigaba ezintathu ezikhulayo:

Isiteji 1: Amanzi Anensipho Afudumele + I-Radial Microfiber Sula (Ilungisa u-60% Wamadiski Angafundeki)¶

Ungalokothi usule idiski elomile, elinothuli ngethawula lephepha noma isikibha (amathawula ephepha le-wood-pulp kanye ne-polycarbonate eyomile ye-cotton scratch). 1. Bamba i-disc ngerimu yayo yangaphandle kanye nembobo emaphakathi ngaphansi kwamanzi kampompi ahambayo asivivi ukuze ugeze izinhlayiya zothuli olubi. 2. Faka iconsi elilodwa lensipho yesitsha ewuketshezi (Dawn / Fairy) esihlokweni somunwe esimanzi bese uhlikihla kahle kwimigqa yeradial eqondile ukusuka embotsheni emaphakathi ukuya onqenqemeni. 3. Hlanza kahle ngamanzi ahlanzekile (noma amanzi acwengekile uma amanzi ompompi wakho eqinile) futhi wome, ungalokothi uwuhlikihle ezindingilizini, usebenzisa indwangu yezibuko zamehlo ezincane ezihlanzekile, ezixubile. 4. Ukuze uthole izinsalela ezinamathelayo ezinamathelayo noma ama-smudge anamafutha ohlangothini olungezansi olucwebezelayo (ungalokothi ube kulebula kayinki ephrintiwe), thambisa indwangu ye-microfiber nge Isopropyl Alcohol (70% ukuya ku-91% IPA) bese usula ngokuzulazula ukusuka enkabeni kuye emgqeni.

Isiteji sesi-2: Iqhinga elithi "Wet-Refraction Index Match" lokufunda Isikhathi Esinye Esiphuthumayo¶

Kungani ukuklwebheka kupulasitiki ophansi ocacile kumisa i-laser ekufundeni imigodi yensimbi 1.2 millimeters (0.047 inches) ngaphansi kwayo? Ngoba ukuklwebheka okumise okwe-V ku-polycarbonate (Refractive Index n = 1.585) igcwele umoya (Refractive Index n = 1.000), egoba futhi esakaza i-infrared/red laser beam njengeprism ukuze igeje umgodi. * Ukugcwalisa Okungabonakali Kwesikhashana Kwesikhashana: Ngaphambi kokuphendukela ekushiseni isihlabathi esibi kudiski engabuyiseleki, sebenzisa ifilimu elincanyana elincane le-pure automotive carnauba wax (Pledge / isigcwalisi sokuklwebha izingilazi zamehlo zepulasitiki) noma uwoyela wamaminerali / ijeli ye-petroleum isulwe phansi kuze kube ukukhanya okukhanyayo okungabonakali ngokukhazimulayo kuyo yonke indawo, ikhipha amaphesenti angama-99.9 okuchichima ngendwangu ye-microfiber ukuze ingaphezulu lome ngokuphelele lapho lithintwa futhi ayikwazi ukujikijela izinsalela kwilensi yokushayela. Ukugcwalisa i-Microscopic V-groove ngenkomba ecacile ye-polycarbonate efana ne-polycarbonate kuvumela i-laser beam ukuthi idubule iqonde phakathi nesikhathi sakho. ddrescue imaging pass.

Isiteji sesi-3: Imikrwelo Emanzi Ye-Micro-Polishing Deep Polycarbonate (Ama-CD & nama-DVD KUPHELA, Angeke abe yi-Blu-ray)¶

Uma i-CD noma i-DVD inokuklwebha okujulile okusezansi okusabangela amaphutha okufunda, ungasebenzisi** umuthi wokuxubha amazinyo okubhaka wesoda owuketshezi wasendlini (oqukethe amakristalu e-silica agwinya ukushwibeka unomphela). Kunalokho: 1. Sebenzisa upholishi wepulasitiki ongaphansi kwemicron odizayinelwe i-acrylic/polycarbonate optical (Novus #2 Fine Scratch Remover, Meguiar's PlastX, noma imoto 3000-grit i-swirl remover compound). 2. Faka okokwehla okulingana nophizi kuphedi ye-microfiber emanzi bese upholisha ngokukhethekile ngemivimbo emifushane ye-radial (maphakathi ukuya-emphethweni) phezu komkhakha oklwetshiwe imizuzwana engama-60 kuze kube yilapho inkaba ebomvu ihlangana kahle ku-polycarbonate ezungezile. 3. Geza zonke izinsalela zokupholisha ngamanzi afudumele nensipho yesitsha, wome ngokuphelele, futhi ngokushesha ufanekisele idiski ngayo ddrescue.

Isigaba sesi-3: Isithombe se-Forensic samaphasi amaningi nge-GNU ddrescue, dvdisaster, kanye Nokuhlanganiswa Kwe-Multi-Drive¶

Uma i-optical disc inemihuzuko engokomzimba, ukubola kukadayi, noma imikhakha ebuthakathaka, kufanele uyifanekisele eluhlaza. 2,048-byte imikhakha yokubona ibe eyodwa .iso ifayela ku-hard drive yakho. Nakhu ukuthi kungani GNU ddrescue futhi dvdisaster sebenza ngempumelelo kuma-CD nama-DVD aklwetshiwe:

1. Imfihlo yokuhlanganisa ama-Multi-Drive (Indlela Amadrayivu Ashibhile angu-3 Ahlula Ngayo Idrayivu Engu-1 Ebizayo)¶

Yonke imodeli ye-optical drive ine-engeli ye-laser diode ehluke kancane, indawo yokuvula izinombolo yelensi, ukulawula kokuthola inzuzo okuzenzakalelayo (AGC), kanye ne-hardware Reed-Solomon (CIRC / RS-PC) isiqophi sokulungisa iphutha: * Shayela A (isb., i-LG Desktop SATA DVD Burner) ingase ifunde amaphesenti angu-98.4 e-DVD yakho yomshado eklwetshiwe, yehluleke emikhakheni engu-400 eduze komphetho ongaphandle. * IDrayivu B (isb., i-Pioneer Blu-ray Drive noma i-ASUS Laptop Drive endala) ingase yehluleke emikhakheni engu-300 ehlukene eduze kwehabhu yangaphakathi, kuyilapho ifunda ngokuzikhandla imikhakha engu-390 kwezingu-400 iDrayivu A eyiminyanisa. * Ngoba ddrescue amathrekhi ngamunye ngamunye 2,048-byte umkhakha kuwo .map ifayela, ungakwazi ukusebenzisa i-Pass 1 kuDrayivu A, ukhiphe idiski, ufake idiski kuDrayivu B, bese ukhomba ddrescue ku-** okufanayo rescue.iso futhi rescue.map amafayela**. ddrescue izo kuphela icele iDrayivu B ukuthi ifunde imikhakha engu-400 engekho, ihlanganise amandla ama-laser angokwenyama amaningi abe amaphesenti angu-100 aphelele .iso isithombe.

2. Impela ddrescue Imiyalo yama-CD Aklwetshiwe, ama-DVD, nama-Blu-ray Discs (Linux & macOS)¶

# STEP 1: Prevent the operating system from mounting or spinning the scratched disc automatically,
# and set the optical drive sector size explicitly to 2048 bytes (-b 2048 is mandatory for CD/DVD/BD):

# Optional: Throttle optical drive spin speed to 4x or 8x so the laser servo can track warped/scratched pits cleanly:
eject -x 8 /dev/sr0

# STEP 2: Pass 1 (Fast Non-Scraping Sweep) - Grab 95%+ of healthy sectors quickly without hanging on scratched tracks:
#   -b 2048 : Optical disc hardware sector size (2 KB per sector)
#   -n      : Do NOT waste time splitting or retrying bad sectors on Pass 1 (prevents laser overheating)
sudo ddrescue -b 2048 -n /dev/sr0 ~/Desktop/disc_rescue.iso ~/Desktop/disc_rescue.map

# STEP 3: Pass 2 (Direct Unbuffered Hardware Scraping + Reverse Direction)
#   -d      : Direct disc access (bypasses Linux kernel page-cache read-ahead, reading single 2048-byte sectors)
#   -r 3    : Retry stubborn scratched sectors up to 3 times
#   -R      : Read in REVERSE from the outer edge inward (approaches radial scratches from the opposite servo side)
sudo ddrescue -b 2048 -d -r 3 -R /dev/sr0 ~/Desktop/disc_rescue.iso ~/Desktop/disc_rescue.map

# STEP 4: Multi-Drive Merge (If you have a second USB or SATA DVD/Blu-ray drive attached as /dev/sr1):
# Move the disc to the second drive and run the exact same command pointing to the SAME .iso and .map files:
sudo ddrescue -b 2048 -d -r 3 /dev/sr1 ~/Desktop/disc_rescue.iso ~/Desktop/disc_rescue.map

3. Amathuluzi Ahlukile Wokuthola I-Graphical Optical Recovery ye-Windows (dvdisaster & IsoBuster)¶

Uma uku-Windows futhi awukwazi ukusebenzisa i-Linux ddrescue: * dvdisaster (Mahhala, Umthombo Ovulekile weWindows/Linux/macOS): Noma ungakaze udale i .ecc ifayela ngaphambili, dvdisasterI-Adaptive Read / Linear Read scanner ifunda imidiya ye-CD/DVD/BD eyonakele ezingeni lephakethe lezingxenyekazi zekhompyutha ze-SCSI/MMC, ikhombisa ukuzungeza kwerada ebonakalayo okuluhlaza (okunempilo), okuphuzi (okunensayo), nokubomvu (okungafundeki) kudiski, futhi isekela ukuqedwa kwezithombe zamadrayivu amaningi njengalokhu ddrescue. * I-IsoBuster (Windows): Ithuluzi lemboni elisezingeni lemboni le-Sony/Panasonic/Canon elingaphothuliwe 8 cm (3.1 in) Amadiski e-MiniDVD camcorder, ama-CD ezithombe zezikhathi eziningi, i-Mavica floppy/CDs, nezihlahla zefayela le-UDF/ISO ezilimele.

Isigaba sesi-4: Ikhipha amavidiyo adlalekayo nezithombe ze-DICOM kokululame kancane .iso¶

Kuthiwani uma i-disc yakho ine-pinhole ehlala njalo ku-foil, ngakho ddrescue ithole amaphesenti angama-99.92 wediski ngenkathi ishiya imikhakha engama-50 engafundeki igcwele iqanda ngaphakathi disc_rescue.iso? * Kungani kunjalo .iso kusewukunqoba: Ngenkathi uzama ukukopisha idiski ku-Windows Explorer ngaphambilini, uthole amaphesenti angu-0 wamafayela akho ngenxa yokuthi i-Explorer iye yaphumula engxenyeni yokuqala embi. Ngaphakathi disc_rescue.iso, ddrescue esikhundleni saleyo mikhakha engama-50 engafundeki kwaba engenangozi 0x00 amabhayithi ngenkathi igcina wonke amagigabhayithi asele. * Ungawakhipha kanjani amafayela akho kuwo disc_rescue.iso: 1. OkwamaDVD omndeni (VIDEO_TS / VTS_01_1.VOB): Ntaba disc_rescue.iso (noma uyivule ngqo ngaphakathi 7-Zip, MakeMKV, HandBrake, noma VLC Media Player). Ngoba MPEG-2 .VOB ukusakazwa kwamavidiyo kugcwele izihloko zokuvumelanisa kabusha njalo kuma-milliseconds ambalwa, igebe eligcwele u-10 KB eligcwaliswe ziro livele libangele kafushane 0.2-second i-pixel glitch ekudlalweni ngenkathi wonke umshado wakho wamahora angu-2 noma ividiyo yakho yobuntwana idlala ngomsindo ocacile nevidiyo. 2. OkwamaCD DICOM Esibhedlela: Vula disc_rescue.iso nge-7-Zip* (Right-click -> 7-Zip -> Open archive) noma uyikhweze, kopisha konke .DCM amafayela, futhi ulayishe ifolda kokuthi Weasis, Horos, noma MicroDicom. Njengoba ucwaningo lwe-MRI noma lwe-CT lwezingcezu ezingu-300 lugcina ucezu ngalunye oluphambanayo njengesinye esizimele. .DCM ifayela (100 KB ku 2 MB ngayinye), umkhakha omubi ku-CD uthinta kuphela ucezu olulodwa kwezingama-300, okushiya ezinye izingcezu ezingama-299 zingamaphesenti ayi-100 zokuxilonga.

Uhlu lokuhlola lokuvikela: ukuthutha umndeni wakho kanye namadiski okukhanya wezokwelapha ngaphambi kokufika kokubola kokudayi¶

Ama-CD-R nama-DVD-R arekhodikayo enziwe ngodayi bemvelo (i-cyanine, i-phthalocyanine, ne-azo) anokuphila kwamakhemikhali omhlaba wangempela okungu-10 kuya ku-25 iminyaka ngaphambi kokuba ukukhanya kwe-UV, umswakama, nomoya-mpilo womkhathi kulimaze umehluko kadayi ("i-disc rot"):

• Masinyane klebhula yonke i-DVD-R yomndeni, i-camcorder MiniDVD, ne-CD yomshado ku-an .iso noma engalahleki .mkv ifayela bese uwagcina kusistimu yokusekelayo engu-3-2-1 (bona Izipele zekhompuyutha: isu le-3-2-1 kanye nokutholwa kwenhlekelele).
• Kopisha zonke izibhedlela ze-DICOM CD kukhompuyutha yakho kanye nesitoreji samafu esibethelwe ngosuku owathola ngalo: Gcina konke okuqukethwe okungahluziwe kwe-CD (okuhlanganisa DICOM/ ifolda kanye DICOMDIR index) zifakwe kufolda ebhalwe usuku, indlela (MRI Lumbar Spine), kanye negama lesibhedlela ukuze unganciki ku-CD yepulasitiki ebonakalayo ngemuva kweminyaka.
• Uma kufanele ufake kungobo yomlando idatha kuma-optical discs iminyaka engu-50+ yokugcina ebandayo, sebenzisa kuphela i-Inorganic M-DISC (i-Millenniata Blu-ray / DVD) futhi ikhiqize u-20% dvdisaster Umhlanga-Solomon .ecc i-parity file: Ngokungafani namadiski odayi wemvelo afiphalayo, i-M-DISC ifaka imigodi ebonakalayo ongqimbeni lwengilazi lwe-carbon/metal-oxide engakwazi ukubola, futhi igcine dvdisaster .ecc i-parity file ikuvumela ukuthi wakhe kabusha ngokwezibalo amaphesenti angu-100 ediski ngisho noma izinkulungwane zemikhakha ziklwejwa kamuva.

Imibuzo evame ukubuzwa¶

Ingabe i-"Toothpaste Trick" noma "Iqhinga Lekhasi likaBhanana" liyawalungisa ngempela ama-CD nama-DVD aklwetshiwe?¶

Cha; ukusebenzisa umuthi wamazinyo wasendlini noma ukudla ku-optical disc ingenye yezinganekwane ze-inthanethi ezibhubhisa kakhulu. Iningi lesimanjemanje lokuxubha amazinyo elimhlophe kanye nejeli liqukethe izinhlayiya ze-silica e-hydrated noma ze-calcium carbonate ezimahhadlahhadla futhi ezingalingani ku-polycarbonate yokubona, enwaya izigidi zemifantu emincane emincane emincane eyisakaza i-laser ibe yimbi kakhulu kunokqalayo. Uma i-CD noma i-DVD inombhalo wepulasitiki ojulile ohlangothini olungezansi amanzi anensipho angakwazi ukuwulungisa, sebenzisa ipholishi yangempela ye-sub-micron optical acrylic/polycarbonate (efana ne-Novus #2 noma i-Meguiar's PlastX) ehlikihlwe ngokuqinile emigqeni yokukhanya eqondile ukusuka kuhabhu emaphakathi kuya onqenqemeni olungaphandle, futhi ungalokothi upholishe i-Blu-ray disc nhlobo.

Kungani i-Camcorder yami endala i-MiniDVD (idiski elincane elingu-8 cm / 3.1 inch) ibonakala ingenalutho ngokuphelele (0 Bytes) uma ngiyifaka kukhompyutha yami?¶

Amakhamera e-DVD (i-Sony Handycam, i-Canon, i-Panasonic, i-Hitachi) kanye nezirekhodishi ze-DVD zegumbi lokuhlala ezizimele zibhale ividiyo kumadiski e-DVD-R/RW ngesikhathi sangempela ngaphandle kokubhala ithebula lefayela elijwayelekile le-PC ISO-9660 kuze kube yilapho umsebenzisi eqhuba ngesandla umyalo othi **"Qeda i-Disc"** ngaphakathi kwemenyu ye-camcorder. Uma i-camcorder ilahlekile noma yephulwe ngaphambi kokuba i-disc iqedwe, iWindows ne-macOS azikwazi ukubona Uhlu Lokuqukethwe futhi zibike idiski njengengenalutho. Amamuvi akho asekhaya asaphelele kudiski ngamaphesenti ayi-100: vele uvule i-MiniDVD engaqediwe ngaphakathi **IsoBuster** kuthreyi elayisha iDVD yedeskithophu (ungalokothi ufake i-MiniDVD encane engu-8 cm ku-MacBook noma idrayivu yemoto, lapho izobambeka khona) ukuze uskene amathrekhi aluhlaza futhi ukhiphe `.VOB` / `.MPG` ukusakazwa kwamavidiyo.

Ngingayibuka kanjani i-MRI yami yesibhedlela noma i-CT scan CD ku-Apple MacBook kuyilapho i-CD ineWindows kuphela Viewer.exe ifayela kuyo?¶

Amadiski ezithombe zasesibhedlela ahlanganisa i-Windows engavamile `.exe` Uhlelo kuphela njengento elula, kuyilapho izithombe zangempela zezokwelapha zihlala kufolda evamile eqanjwe igama `DICOM` noma `IMAGES` kudiski efanayo. Xhuma idrayivu ye-USB DVD yangaphandle ku-Mac yakho, vula i-CD ku-Finder, idonse yonke `DICOM` ifolda (kanye `DICOMDIR` file) ku-Mac Desktop yakho, bese uyivula usebenzisa i-**Weasis** yamahhala noma **Horos** isibukeli sezokwelapha se-macOS. Zombili izinhlelo zifunde imethadatha ye-DICOM yesibhedlela somdabu futhi ikuvumela ukuthi uskrole ngokushelela kuzo zonke izingcezu ze-axial, sagittal, ne-coronal MRI/CT.

Ngingakwazi yini ukuphinde ngithole i-CD uma icwecwe elicwebezelayo elisiliva/legolide elikuhlangothi lwelebula eliphezulu liklwetshiwe futhi ngibona ukukhanya kukhanya kuyo?¶

Ngokungafani nokuklwebheka endaweni ephansi yepulasitiki (engapholishwa noma igcwaliswe ngokubonakalayo ngenxa yokuthi i-laser idubula amamilimitha angu-1.2 epulasitiki ecacile ngaphambi kokushaya isendlalelo sedatha), ukuklwebheka ohlangothini lwelebula engaphezulu ye-CD kukhuhla ngokoqobo i-aluminium encane encane noma ungqimba olukhanyayo lwegolide kanye nedatha enesitembu iyazigodlela. Awukwazi ukupholisha noma ukupenda emuva kwemigodi ye-foil engekho. Kodwa-ke, konke akulahlekile: yeka ngokushesha ukuphatha indawo ephezulu bese ugijima **GNU `ddrescue` (`-b 2048 -n`)** kudiski. `ddrescue` izohlenga wonke amafayela asekhona kanye nemboni ezungeze imbobo yokukhonkotha, okukuvumela ukuthi wonge amaphesenti angama-95 kuye kwangama-99 ezithombe, amadokhumenti, noma izingcezu ze-DICOM kuyo yonke idiski.

Iziqondiso ezihlobene¶

• Ukuhluleka kwe-hard drive kanye nokuthola idatha
• Ukususwa kwefayela ngengozi, idrayivu efomethiwe, nokutholwa kwesithombe
• Ikhadi le-SD elonakele, imidiya yekhamera engafundeki, kanye nokutholwa kwesithombe esingu-RAW
• Isixhumi sedrayivu ye-USB efinyeziwe kanye nokuhlenga idatha
• Izipele zekhompuyutha: isu le-3-2-1 kanye nokutholwa kwenhlekelele
• Izinombolo eziphuthumayo zomhlaba wonke

Imithombo ihloliwe¶

• I-National Electrical Manufacturers Association (NEMA) & ISO (International): I-DICOM Standard PS3.10 kanye ne-PS3.12 (Isitoreji Semidiya kanye Nefomethi Yefayela Yezokwelapha .DCM Idatha kanye DICOMDIR Izakhiwo zohla lwemibhalo ku-Optical Media).
• Umkhandlu Wezinsiza Zolwazi (i-CLIR) kanye Nomtapo Wezincwadi WeCongress (United States): Ukunakekelwa Nokuphathwa Kwama-CD nama-DVD: Umhlahlandlela Wabasebenzi Basemtatsheni Wezincwadi Nabalondolozi Bamagugu (Ngu-Fred R. Byers, NIST / CLIR Publication 121).
• I-Canadian Conservation Institute (CCI) (Canada): I-Conservation Note 19/1 (Ubude Obude Bama-CD Arekhodwayo, ama-DVD, nama-Blu-ray Discs, kanye Ne-Optical Media Disaster Recovery).
• Iphrojekthi ye-GNU / Isisekelo Sesoftware Yamahhala (yamazwe ngamazwe): GNU ddrescue I-Optical Media Recovery Manual (2048-byte Ukufinyelela Okuqondile Komkhakha kanye Nokuhlanganiswa Kwemephu Yemephu Ye-Multi-Drive).
• I-Ecma International / ISO/IEC (International): ECMA-130 ("Yellow Book" CD-ROM CIRC Reed-Solomon Error Correction), ECMA-267 (DVD-ROM Specification), kanye dvdisaster Imibhalo Yezobuchwepheshe.