Idrayivu ye-USB ayibonwa: izimbangela, izixazululo kanye nokutakula

Informatec Digital » Izinsiza » Idrayivu ye-USB ayibonwa: izimbangela, izixazululo kanye nokutakula

Uma uxhuma idrayivu ye-USB bese iWindows ibonisa umlayezo othi "Idivayisi ye-USB ayibonwa," noma ingabonakali ndawo, ingenye yalezo zinkinga ezingalimaza usuku lwakho. Okukhulu nakakhulu uma unemibhalo yomsebenzi, izithombe, noma yiliphi ifayela olidingayo ngokushesha kuyo.

Izindaba ezinhle ukuthi ezimweni eziningi konke akulahleka: ukwehluleka okuningi kubangelwa izinkinga zokuxhumeka, umshayeli, noma uhlelo lwefayela , futhi kungahlolwa futhi kulungiswe ngesineke esincane. Kuphela uma kunomonakalo omkhulu ngokomzimba lapho indaba iba yinkimbinkimbi ngempela, futhi kungadingeka ukuthi uye esitolo sokulungisa esingochwepheshe.

Izimbangela ezivamile zedrayivu ye-USB engaziwa

Ngaphambi kokushintsha noma yini, kubalulekile ukuqonda ukuthi kungenzeka yini. Umlayezo wephutha ofanayo ungaba nezimbangela ezihlukene kakhulu, futhi kuye ngesizathu, ikhambi elilodwa noma elinye lizofaneleka kakhulu uma sifuna ukulungisa idrayivu ye-USB ngaphandle kokulahlekelwa idatha.

Phakathi kwezimbangela ezivame kakhulu lapho idrayivu ye-USB ingatholakali noma ingabonakali kahle ohlelweni, kuneziningana ezivelele:

• Ukwehluleka kokuxhumeka kwe-USBAmachweba alimele, izintambo noma ama-adaptha anephutha, ukungcola esixhumini, ama-hub angenawo amandla anele, njll.
• Amaphutha esistimu yefayelaIdrayivu ingase ibe yi-RAW, ihlale njengesikhala esingabelwe, noma ibe ne-partition eyonakele ngenxa yokususwa okungafanele noma ukucima kukagesi.
• Kungqubuzana nohlamvu lweyunithiI-Windows ithola idrayivu ye-USB, kodwa ayinikezi uhlamvu noma izama ukunikeza eyodwa esivele isetshenziswa, ngakho awuyiboni ku-Explorer.
• Izinkinga zomshayeli: Amashayeli e-USB onakele, aphelelwe yisikhathi noma afakwe ngendlela engafanele, kokubili kusilawuli se-USB kanye nedivayisi uqobo.
• izilungiselelo zamandlaIzinketho ezifana nokumiswa kwe-USB okukhethiwe noma ukonga amandla kuma-root hubs kungabangela ukuthi i-port "icime".
• Uhlelo lwefayela olungahambisani: amadrayivu ku-APFS (macOS) noma i-ext2/3/4 (Linux) iWindows eqaphela ngendlela elinganiselwe noma engayibonisi nhlobo.
• Ukulimala ngokomzimbaImithelela, umswakama, ukukhishwa kukagesi noma ukuguguleka kwememori ye-NAND kungenza i-USB ingasebenzi nhlobo.

Isihluthulelo siwukuqala ukuhlola ukuthi iWindows ibona kanjani idrayivu ye-USB isebenzisa amathuluzi ayo akhelwe ngaphakathi. Ukusuka lapho, unganquma ukuthi kunengqondo yini ukuzama ukubuyisa idatha ngesofthiwe , ukufometha idrayivu, ukuguqula abashayeli, noma ukucabanga ukuthi umonakalo ungowomzimba.

Hlola idrayivu ye-USB ku-Disk Management

Isinyathelo sokuqala sokuxilonga esingathi sína ukuhlola ukuthi idivayisi ibukeka kanjani ku- Windows Disk Management . Ngisho noma ingaveli ku-"Le PC," uhlelo lungase lusayithola ezingeni eliphansi.

Ukuvula i-Disk Management ku-Windows:

• Chofoza kwesokudla "Leli qembu" (noma “Ikhompyutha Yami”) bese ukhetha “Phatha”.
• Ewindini elivulayo, faka "Ukuphathwa kweDiski".

Uma idrayivu ye-USB ixhunyiwe, bheka phansi kwefasitela. Ngokuvamile uzothola idivayisi kwesinye salezi zimo, ngasinye sinemiphumela ehlukile:

• I-USB ibonakala njenge-RAWUkwahlukaniswa kukhona, kodwa uhlelo lwefayela lonakele noma alubonwa yiWindows. Lokhu kuvame ukwenzeka ngenxa yokususwa okungafanele, amagciwane, noma ukucima kukagesi.
• Idrayivu ye-USB ivela njenge-“Okungabelwe”Kukhona idiski ebonakalayo, kodwa engenazo izingxenye ezichaziwe. Kuzo zonke izinjongo ezisebenzayo, kufana nokuthi iyidiski eluhlaza.
• Idrayivu ye-USB ine-partition kodwa ayinayo incwadi yedrayivu.Ibhalwe njengo-“Primary Partition”, enohlelo lwefayela olusebenzayo (NTFS, FAT32, exFAT…), kodwa ayinayo incwadi yedrayivu.
• Idrayivu ye-USB ayibonakali ku-Disk ManagementKulesi simo, inkinga cishe ikwihadiwe, abashayeli abonakele kakhulu, noma ngisho nakusilawuli sedrayivu ye-USB uqobo.

Lokhu kuhlola kuzokusiza ukuthi unqume ukuthi kuyafaneleka yini ukuthola idatha ngaphambi kokuthinta noma yini , noma ungaya ngqo ekulungiseni ivolumu, uhlamvu lwedrayivu, noma izinkinga zesistimu yamafayela ngaphandle kokwesaba.

Okubaluleke kakhulu: buyisa idatha ngaphambi "kokulungisa" i-USB

Noma nini lapho imemori iqukethe amafayela abalulekile, kuhlale kuwukuhlakanipha ukuzama ukubuyisela amafayela ngaphambi kokufometha noma ukulungisa . Noma yimuphi umzamo wokulungisa (chkdsk, ukufometha, ukwahlukanisa, njll.) ungabhala ngaphezulu imikhakha futhi wenze idatha ethile isuke ekubeni "nzima ukuyibuyisela" iye ekubeni "engenakwenzeka."

Uma idrayivu ye-USB isabonakala (noma ngabe iyi-RAW, ngaphandle kohlamvu lwedrayivu, noma inamaphutha), izinhlelo eziningi zokutakula ezidumile zizokwazi ukuyihlaziya. Amathuluzi afana ne-EaseUS Data Recovery Wizard, i-Disk Drill, i-Ontrack EasyRecovery, kanye nezinhlelo ezifanayo ayakwazi:

• Imikhakha yokuskena ukunganaki amaphutha ajwayelekile ohlelweni lwefayela.
• Thola amafayela alahlekelwe igama lawo noma indlela yawo kodwa idatha yawo isekhona.
• Buka kuqala bese ulanda amadokhumenti, izithombe, amavidiyo, njll., kwenye iyunithi.

Inqubo ejwayelekile ngalolu hlobo lwesofthiwe ivame ukufana:

1. Faka uhlelo ku-hard drive yangaphakathi ye-PC (ungalokothi ube ku-USB drive eyonakele ngokwayo).
2. Xhuma idrayivu ye-USB; izovela njengakwisofthiwe. idrayivu ekhiphekayo noma i-hard drive yangaphandle.
3. Qala ukuskena (okusheshayo + okujulile) kuleyo divayisi bese ulinda ukuthi iqede.
4. Uma usuqedile, khetha amafayela ofuna ukuwagcina bese uchofoza kuwo Buyiselabekhetha i-albhamu ehlukile njengendawo abaya kuyo.

Ezimweni ezibucayi kakhulu (amabhulokhi anephutha, i-USB enamaphutha aqhubekayo, njll.) kuyalulekwa ukuthi uqale udale isithombe se-byte-byte sedrayivu bese usebenza kuleyo khophi, ukuze ungajezisi ihadiwe esevele ihluleka.

Fometha idrayivu ye-USB ukuze isebenze futhi

Uma usuyibekile yonke into oyikhathalelayo noma uma ucabanga ukuthi akukho lutho olubalulekile okufanele uluthole, isinyathelo esilandelayo esinengqondo ukufometha idrayivu ukuze uzame ukuyibuyisela esimweni esisebenzisekayo.

Kusukela ku-Disk Management uqobo, ungakwenza ngezindlela eziningana kuye ngesimo sangaphambilini ositholile:

• Uma i-USB ibonakala njenge-RAWUma idatha isitholiwe, chofoza kwesokudla ku-partition bese ukhetha okuthi “Fometha”. Khetha uhlelo lwefayela olufanele (isibonelo, i-NTFS uma uzolusebenzisa kuphela ku-Windows, noma i-exFAT uma ufuna ukuhambisana nezinye izinhlelo namadivayisi) bese ushiya inketho ihloliwe. ifomethi esheshayo ukunciphisa isijeziso sibe yinkumbulo.
• Uma isikhala sibhalwe ngokuthi “Akunikeziwe”Chofoza ngakwesokudla kulelo bhulokhi elimnyama bese ukhetha "Ivolumu Elula Entsha". Landela i-wizard, nika sonke isikhala ku-partition eyodwa, khetha uhlelo lwefayela kanye nohlamvu lwedrayivu.
• Uma ukwahlukanisa kukhona kodwa kunikeza amaphutha angajwayelekileUngazama "Susa ivolumu" kuqala bese udala ivolumu entsha kusukela ekuqaleni. Kodwa-ke, lo msebenzi uzosula konke okuqukethwe.

Uma ukhetha ukulawula okungaphezu kokunikezwa yi-Windows, kukhona abaphathi be-partition bezinkampani zangaphandle njenge-EaseUS Partition Master, abenza imisebenzi efana nokushintsha izinhlelo zamafayela, osayizi beqembu, amalebula, kanye nezinhlamvu zokushayela kube lula nge-wizard elula.

Ukusebenzisa i-CHKDSK nokulungisa uhlelo lwefayela

Uma kuvela idrayivu ye-USB ohlelweni, kodwa kuvela amaphutha lapho uzama ukuyivula, noma i-Windows isikisela ukuyifometha, ngezinye izikhathi ukulungiswa kwesistimu yefayela okusheshayo usebenzisa i-CHKDSK kwanele.

Inqubo imi kanje:

• Xhuma idrayivu ye-USB bese uhlola ukuthi yini incwadi yokushayela uyinikezile (isibonelo, H:).
• Vula imenyu yokuqala, thayipha cmdChofoza ngakwesokudla ku-"Command Prompt" bese ugijima njengomlawuli.
• Efasiteleni elimnyama, thayipha umyalo onjengalona:
  chkdsk H: /f
  Faka esikhundleni u-H: ngohlamvu lwangempela lwedrayivu yakho ye-USB.

Inketho ethi /f itshela i-CHKDSK ukuthi ilungise ngokuzenzakalelayo noma yimaphi amaphutha anengqondo ewatholayo ohlelweni lwefayela. Ngezinye izikhathi uzobona ukuhlukahluka komyalo nge- /x , okuphoqa idrayivu ukuthi yehliswe ngaphambi kokuyiskena.

Uma inkinga iwukonakala okuncane kwesistimu yamafayela (kuvamile kakhulu lapho idrayivu ye-USB isuswa ngokuzumayo), lo myalo ungabuyisela idrayivu ekuphileni ngaphandle kokufometha . Kodwa-ke, uma i-CHKDSK iqala ukumaka imikhakha emibi ngobuningi, cabanga ngokulondoloza lokho ongakwenza ngokushesha okukhulu.

Izinkinga zomshayeli kanye nedivayisi ye-USB engaziwa

Uma iWindows ibonisa iwindi elidumile elithi "idivayisi ye-USB ayibonwa" , cishe njalo kuba nenkinga ngabashayeli noma ukuxhumana phakathi kwesilawuli se-USB kanye nebhodi lomama, kunokuba kube ukwehluleka kwedatha equkethwe kwimemori.

Izimbangela ezivame kakhulu iMicrosoft ezihlobanisa naleli phutha yilezi:

• Abashayeli be-USB abangazinzile noma abonakele.
• Kulindwe izibuyekezo kwe-Windows ezithinta i-USB, i-chipset noma i-firmware.
• Ukwehluleka kokwabiwa kwamandla noma ukumiswa okukhethiwe kumayunithi angaphandle.
• Ama-driver e-motherboard noma e-chipset aphelelwe yisikhathi.

Ngaphambi kokungena ku-Device Manager, kungumqondo omuhle ukuqeda izisekelo:

• Qala kabusha ikhompyutha yakho; ivame ukuxazulula amaphutha okuthola kaningi kunalokho ongase ukucabange.
• Isivivinyo enye imbobo ye-USB, okungcono kube ngeyangemuva ngqo kubhodi lomama uma kuyi-PC yedeskithophu.
• Zama ngenye ikhompyutha: uma i-USB efanayo ihluleka kuyo yonke imishini, qala ukusola idivayisi.
• Hlola ukuthi amanye ama-USB drive ayasebenza yini kwi-PC yakho, ukuze ungasoli ikhompyutha ngaphandle kwesizathu.

Uma kusakubangela inkinga, ngena ku- Device Manager (chofoza ngakwesokudla ku-Start > “Device Manager”) bese uhlola lezi zindawo:

• Ukushayela kwediski: Imodeli yakho yedrayivu ye-USB kufanele ivele lapha uma iyibona kahle.
• Izilawuli zamabhasi zochungechunge lwe-UniversalHlola ukuthi kukhona yini izithonjana zesixwayiso eziphuzi kunoma yimaphi amadivayisi e-USB.
• Amanye amadivaysiUma kuvela into ejwayelekile enophawu lokubabaza, kungenzeka ukuthi idrayivu yakho ye-USB ayibonakali kahle.

Kunoma iyiphi idivayisi esolisayo, ungazama okulandelayo:

• Chofoza ngakwesokudla bese ucindezela “Vuselela UkushayelaVumela iWindows ifune abashayeli abajwayelekile abafanelekile.
• Uma lokho kungasebenzi, chofoza kwesokudla futhi > “Khipha idivaysiBese unqamula i-USB, linda imizuzwana embalwa, bese uyixhuma kabusha ukuze iWindows ikwazi ukwenza kabusha ukutholwa kusukela ekuqaleni.

Ezimweni eziningi, lo mjikelezo olula wokukhipha/ukuthola kabusha ulungisa umlayezo ongaziwa wedivayisi ye-USB ngaphandle kokudinga noma yini eyinkimbinkimbi kakhulu.

Amandla embobo ye-USB kanye nezilungiselelo zokulala

Kuma-laptop namadivayisi aklanyelwe ukonga ibhethri, i-Windows isebenzisa indlela enamandla yokuphatha amandla. Izici ezifana ne -selective USB suspend noma inketho "yokuvumela ikhompyutha ukuthi icime le divayisi ukuze yonge amandla" zingashiya imbobo ingabonakali ingasetshenziswa.

Kunezindawo ezimbili ezibalulekile zokuhlola lokhu:

• Izinhlelo zamandla IWindows
• Izakhiwo ze Ama-hub ezimpande ze-USB kusiphathi Sedivayisi.

Ukuze ukhubaze i-USB selective suspend ohlelweni lwakho lwamandla:

• Vula Iphaneli yokulawula bese uya ku-“Hardware nomsindo > Izinketho zamandla”.
• Kuhlelo olusebenzayo, thepha okuthi “Shintsha izilungiselelo zohlelo” bese kuthi “Shintsha izilungiselelo zamandla ezithuthukisiwe”.
• Ngaphakathi kwesihlahla, kuyavulekaUkucushwa kwe-USB > Ukucushwa kokumiswa kokukhetha kwe-USB”.
• Faka kokubili “Ibhethri lisebenza” kanye “ne-AC lisebenza” ku-“KukhutshaziweFaka isicelo bese wamukela.

Ukuvimbela iWindows ukuthi ingavali ama-hub ezimpande ze-USB noma nini lapho ifuna:

• Vula Isiphathi Sedivayisi.
• Nweba "izilawuli zebhasi ezijwayelekile".
• Kokufakiwe ngakunye okubizwa ngokuthi “I-USB Root Hub", chofoza kabili, iya kuthebhu ethi "Ukuphathwa Kwamandla" bese ususa ukumaka kokuthi "Vumela ikhompyutha ukuthi ivale le divayisi ukuze wonge amandla".
• Yamukela izinguquko. Kungase kudingeke ukuthi uqale kabusha ukuze zisebenze ngokugcwele.

Ezimweni eziningi, lokhu kwanele ukuthi idrayivu ye-USB ebonakala "njengesipoki" itholakale ngokwethembeka yisistimu futhi.

Idrayivu ye-USB ayiveli ku-Explorer, kodwa iyavela ku-Disk Management.

Isimo esivame kakhulu: uxhuma idrayivu ye-USB, futhi ivela ngokujwayelekile ku-Disk Management (ngosayizi wayo ofanele kanye ne-partition), kodwa ayibonakali ndawo ku-"Le PC". Ezimweni eziningi zalezi, kungenxa yenkinga ngohlamvu lwedrayivu noma ivolumu.

Izimo ezivame kakhulu yilezi:

• Ukuhlukaniswa komsindo kodwa ngaphandle kwamagamaI-Windows ithola ivolumu, kodwa ayilinikanga incwadi ngenxa yokungqubuzana noma ukwehluleka kwesikhashana.
• Amagama engoma aphikisanayoUhlelo lufuna ukulunika incwadi esivele isetshenziswe enye idrayivu yenethiwekhi, isifundi sekhadi, njll.
• Ivolumu eyonakele kodwa isabonakala njenge-partition eyinhloko: lokhu kuvame ukuba lapho kudingeka khona ukufometha.

Ukuze unikeze noma ushintshe uhlamvu lwedrayivu ye-USB:

• Ukusuka ku-Disk Management, chofoza kwesokudla ku-memory partition.
• Khetha u- “Shintsha uhlamvu lwedrayivu nezindlela".
• Cindezela okuthi “Engeza” uma ingenalo uhlamvu, noma okuthi “Shintsha” uma ufuna ukuyishintsha.
• Khetha incwadi yamahhala (zama ukugwema leyo oyisebenzisela amadrayivu enethiwekhi) bese uqinisekisa ngo-OK.

Ngemva kwemizuzwana embalwa, iWindows kufanele ibonise isaziso sedrayivu entsha etholakalayo, futhi uma ufaka "Le PC", uzobona idrayivu ye-USB enohlamvu lwayo olusha lwedrayivu olulungele ukusetshenziswa.

Nokho, uma ukwahlukanisa kuvela kodwa kuziphatha ngendlela engafanele (kungavumeli ukwabela uhlamvu, kwehluleka ukufaka, njll.), ikhambi elisheshayo ukususa ivolumu bese ulidala futhi, uma nje usuyigcinile idatha oyithandayo ngaphambilini.

Izinhlelo zamafayela ezingahambisani (i-APFS, i-ext4, njll.)

Akuwona wonke amadrayivu e-USB owatholayo afomethiwe ukuze avumelane ne-Windows. Uma othile ekunike idrayivu ye-USB efomethiwe ye- Mac (APFS) noma ukusatshalaliswa kwe-Linux (ext2, ext3, ext4), i-PC yakho ingase ibone idrayivu kodwa ingakwazi ukufunda okuqukethwe kwayo nge-File Explorer.

I-Windows isekela i-NTFS, i-FAT, kanye ne-exFAT. Kwezinye izinhlelo zamafayela, unezinketho ezintathu:

• Sebenzisa a isoftware ethile lokho kwengeza ukwesekwa kokufunda kulawo mafomethi (isibonelo, izinsiza ezivumela ukufunda i-ext4 noma i-APFS kusuka ku-Windows).
• Finyelela okuqukethwe kusuka kukhompyutha enesistimu yokusebenza ehambisanayo (i-Mac, i-PC ene-Linux) bese ukopisha idatha kwenye idrayivu ehambisanayo.
• Uma ungadingi ukugcina lutho, fometha idrayivu ye-USB ngqo ku-NTFS noma i-exFAT kusuka ku-Windows bese ukhohlwa ngefomethi yangaphambilini.

Noma ngabe iyiphi inketho oyikhethayo, kubalulekile ukuqonda ukuthi ukufometha kuzosula ngokuphelele okuqukethwe , ngakho-ke kwenze kuphela uma uqiniseka ukuthi akukho lutho olusele ofuna ukulubuyisela.

Izinkinga zomzimba ngamadrayivu e-USB nokuthi kufanele ufune nini usizo lochwepheshe

Ngeshwa, akuzona zonke izinkinga ezingalungiswa ngemiyalo nokuchofoza. Uma idrayivu ye-USB ishayeke kakhulu, yamanzi, yashaywa ugesi ongashintshi, noma idlule emijikelezweni eminingi yokubhala, inkinga ingaba ngokoqobo.

Ezinye izimpawu zokuthi sibhekene nomonakalo wehadiwe zicacile:

• Imemori ayiveli kunoma iyiphi i-PC, ngisho naku-Disk Management.
• I-LED ayikhanyisi noma ikhanye ngendlela exakile futhi ayibonwa yinoma yiluphi uhlelo.
• Iphunga lokusha, isixhumi sibonakala sigobile, noma isikhwama siphukile.
• Iyunithi itholakala futhi inqanyuliwe ngokunyakaza okuncane kwesixhumi.

Kulezi zimo, ukulungiswa kwe-DIY akusebenzi kakhulu. Ukuthinta ama-solder joints, ukuvula i-USB drive, noma ukufaka ama-chip esikhundleni semishini edingekayo kuvame ukwenza izinto zibe zimbi kakhulu. Uma idatha ibalulekile, into ehlakaniphile okufanele uyenze ukusebenzisa isevisi yobuchwepheshe yokutakula idatha , enamakamelo okuhlanza namathuluzi okususa inkumbulo nokuyifunda ngqo.

Kodwa-ke, lezi zinsizakalo azishibhile: intengo yecala ngalinye incike kuhlobo lomonakalo, amandla edrayivu, kanye nenani ledatha okufanele itholakale. Kodwa uma ulwazi olubalulekile lukudrayivu, yilona kuphela ithuba elingokoqobo lokuluthola.

Ukugwema inkinga esikhathini esizayo: izindlela ezinhle kakhulu ngama-USB drives

Ama-USB flash drive nama-hard drive asasebenza kakhulu, kodwa awabhubhi noma awahlali phakade. Uma ufuna ukunciphisa amathuba okuhlangana ne -USB drive engaziwa futhi , kungumqondo omuhle ukwamukela imikhuba embalwa elula.

Phakathi kwezibaluleke kakhulu, lezi zivelele:

• Sebenzisa njalo inketho ukuze “Susa ihadiwe ngokuphephile” ngaphambi kokukhipha inkumbulo, ikakhulukazi uma ibhala idatha.
• Gwema ukuzisebenzisa ukuze zigcinwe unomphela. Zilungele ukuthuthwa, kodwa hhayi ukugcina ikhophi eyodwa kuphela yento ebalulekile.
• Gcina i- ikhophi yokusekelayo ngalokho okubalulekile, kungakhathaliseki ukuthi kukwenye idiski, efwini, noma kokubili.
• Ungasebenzisi ngokweqile ama-USB hub ashibhile angenawo amandla angaphandle; angase anganikezi amandla anele kuma-hard drive angaphandle noma ama-flash drive amakhulu. Xhumana nochwepheshe wakho. yimaphi amadivayisi e-USB okungafanele uwaxhume Uma unokungabaza ngokuphepha kwedivayisi engaphandle.
• Vikela ama-drive ekushayweni, uketshezi, nokushisa okweqile. Iphakethe eligcwele isihlabathi, isibonelo, lingalimaza isixhumi.
• Njalo nje, hlola Izibuyekezo zeWindows kanye nabashayeli bebhodi lomamaikakhulukazi izilawuli ze-chipset kanye ne-USB.

Kukhona ngisho nezinhlelo ezifana ne-FreeFileSync nezinye ezifanayo ezikuvumela ukuthi ulungiselele ukuvumelanisa okuzenzakalelayo uma uxhuma i-memory stick ye-USB, ukuze njalo uma uyixhuma, okuqukethwe kwayo kukopishwe ngokuzenzakalelayo kudiski ethembeke kakhudlwana.

Ngamafuphi, uma idrayivu ye-USB ingabonwa, akusho ngokuzenzakalelayo ukuthi ngeke isalungiseka: ngokuhlaziya isimo sayo ku-Disk Management, ukuhlola abashayeli namandla, nokubuyisa idatha ngamathuluzi afanele, ezimweni eziningi kungenzeka ukuyibuyisela empilweni noma, okungenani, ukulondoloza ulwazi ngaphambi kokuyeka ihadiwe.