How to boot with iscsi in UEFI env?
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2019-01-26, 18:30
(This post was last modified: 2019-01-26 18:34 by scan80269.)
Post: #36
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RE: How to boot with iscsi in UEFI env?
(2019-01-26 17:24)psychrabi Wrote:(2019-01-26 05:56)scan80269 Wrote: On my system acting as iSCSI disk server (running Windows Server 2012 R2/2016/2019 OS - with iSCSI Target Server feature enabled) I set up Tiny PXE Server to load ipxe-snponly-x86-64.efi (64-bit UEFI iPXE) for UEFI clients network booting via PXE. Once a client boots to iPXE, my iPXE script launches sanboot of an iSCSI virtual disk based on Ethernet MAC address match to initiate Win10 OS boot. The iSCSI virtual disk for the client is set up with GPT style disk partitions to properly support Win10 booting in UEFI mode (a Win10 requirement by Microsoft). It may depend on the client motherboard. Some systems like the Intel NUCs I use allow independent control of UEFI & legacy support, but whenever legacy support is enabled, the system will default to legacy PXE boot, so to get a NUC to do UEFI PXE boot, the legacy support option must be explicitly disabled. The PXE boot screens for UEFI and legacy typically look quite different, so it should be easy to tell which type of PXE boot the system is set to do. Here's a sample iPXE script: #!ipxe #ifopen net0 #dhcp set net0/gateway 0.0.0.0 echo IP: ${net0/ip}, Gateway: ${net0/gateway} echo MAC address: ${mac} set srvname iSCSIServer set boot-url http://${next-server} set keep-san 1 cpuid --ext 29 && set arch x64 || set arch x86 echo Platform type: ${platform} echo Arch: ${arch} echo ${platform}_${buildarch} echo prompt --timeout 5000 Press any key to continue || goto ${platform}_${buildarch} || goto unknown :pcbios_x86_64 :efi_i386 echo This ${platform}_$(buildarch} PC is currently not supported! goto exit :pcbios_i386 iseq ${mac} b8:ae:ed:7d:8b:3f && sanboot iscsi:${next-server}::::iqn.1991-05.com.microsoft:${srvname}-win10rs4-6i5syh-target || iseq ${mac} 54:b2:03:15:03:8b && sanboot iscsi:${next-server}::::iqn.1991-05.com.microsoft:${srvname}-win10rs4-7i5dnhe-target || goto WinPEboot :efi_x86_64 iseq ${mac} b8:ae:ed:7d:8b:3f && sanboot iscsi:${next-server}::::iqn.1991-05.com.microsoft:${srvname}-win10rs5-6i5syh-gpt-target || iseq ${mac} 54:b2:03:15:03:8b && sanboot iscsi:${next-server}::::iqn.1991-05.com.microsoft:${srvname}-win10rs5-7i5dnhe-gpt-target || :WinPEboot # Mount OS install disk if all sanboot to OS attempts fail sanhook --drive 0x81 iscsi:${next-server}::::iqn.1991-05.com.microsoft:${srvname}-win10rs5-install-target || echo prompt Press any key to boot WinPE # wimboot WinPE to prepare for OS installation kernel ${boot-url}/wimboot gui initrd -n segmono_boot.ttf ${boot-url}/Boot/fonts/segmono_boot.ttf segmono_boot.ttf || initrd -n segoe_slboot.ttf ${boot-url}/Boot/fonts/segoe_slboot.ttf segoe_slboot.ttf || initrd -n segoen_slboot.ttf ${boot-url}/Boot/fonts/segoen_slboot.ttf segoen_slboot.ttf || initrd -n wgl4_boot.ttf ${boot-url}/Boot/fonts/wgl4_boot.ttf wgl4_boot.ttf || iseq ${platform} pcbios && initrd -n bootmgr ${boot-url}/bootmgr bootmgr || iseq ${platform} efi && initrd -n bootx64.efi ${boot-url}/bootx64.efi bootx64.efi || initrd -n bcd ${boot-url}/Boot/BCD bcd || initrd -n boot.sdi ${boot-url}/Boot/boot.sdi boot.sdi || initrd -n boot.wim ${boot-url}/Boot/boot.wim boot.wim || boot :unknown echo Unknown platform ${platform}_${buildarch} :exit Prompt Press a key to exit Here's a sample config.ini for Tiny PXE Server: [arch] ;will over rule the bootp filename or opt67 if the client arch matches one of the below ;00006=bootia32.efi ;00007=bootx64.efi 00007=ipxe-snponly-x86-64.efi ;00007=ipxe-x86_64.efi ;00009=bootx64.efi [dhcp] ;needed to tell TFTPd where is the root folder root=E:\pxesrv\files\ ;bootp filename as in http://tools.ietf.org/html/rfc951 filename=ipxe-undionly.kpxe ;filename=ipxe-snponly-x86-64.efi ;alternative bootp filename if request comes from ipxe or gpxe altfilename=BIOSnUEFI.ipxe ;start HTTPd httpd=1 binl=0 start=0 dnsd=0 proxydhcp=1 ;default=1 bind=1 ;tftpd=1 by default ;will share (netbios) the root folder as PXE smb=0 ;will log to log.txt log=0 ;opt1= ;opt3= ;opt6= ;opt28= ;opt15= ;opt17= ;opt43= ;opt51= ;opt54= ;opt67= ;opt66= ;opt252= poolstart=192.168.0.106 poolsize=0 ;alternative bootp filename if request comes thru proxydhcp (udp:4011) ;proxybootfilename= ;any extra dhcp options ;my gpxe / ipxe dhcp options optextra=175.6.1.1.1.8.1.1 ;the below will be executed when clicking on the online button ;cmd=_test.bat ;if log=1, will log to log.txt log=0 opt1=255.255.255.0 opt3=192.168.0.1 opt6=192.168.0.1 opt28=192.168.0.255 opt43=0 opt51=3600 opt54=192.168.0.105 next-server=192.168.0.105 opt60=PXEClient opt66=192.168.0.105 opt17= opt67=ipxe-undionly.kpxe [frmDHCPServer] top=10 left=968 [frmAbout] top=486 left=509 |
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