Recently, I am come across the issue where Dell OptiPlex 3010 was unable to load boot image using PXE boot successfully. System was unable to load boot.sdi file. Loading Files, File \SMSBoot\boot.sdi, WDS log shows the message "TFTP download failed". Resolution: This issue might occur if following registry entry added to SCCM Distribution Point with PXE. HKEY_LOCAL_MACHINE\ Software\Microsoft\SMS\DP\RamDiskTFTPBlockSize Type Reg_Dword Value: 16384 Dec (Do not use higher value than this!) Recommend that you increase this setting in multiples (4096, 8192, 16384, and so on) and that you not set a value higher than 16384. Please change the value of RamDiskTFTPBlockSize to 8192 or lower to resolve this issue.
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Unable to PXE Boot Surface Pro 2 ? Surface Pro 2 driver pack is available from download from Microsoft Website. This driver pack does not include the Ethernet Adaptor drivers to inject in WinPE boot image for PXE Boot. Initially I had trouble finding the driver to inject in Boot CD, driver is not included in Surface Pro 2 driver pack or any other official Microsoft link . I managed to identify driver from driverstore and inject in SCCM. The same driver package was injected in Win PE boot image from SCCM 2012 R2 or SCCM 2012 SP1 CU3 using DISM command on Windows 8.1 machine . Driver can be downloaded from here . Thanks Pratik Dave