I crashed my PC while I was debugging with IDA, when I started IDA next time I continued with opened db & repair, but now I cannot use debugger. Please can someone help me?
db repair really failed - and Dbgr menu disappeared. I was debugging some program, probably originally DOS ported to NT (e.g. every in/out instruction was done using DeviceIoControl, this way it did PCI scan - no wonder it hung my PC...). Re-disassemble the file seems to be obvious option, but is there any trick just to enable debugger? (I have a lot of comments & names in original disassembly)
You can do File->Produce File->Dump database to IDC file, and then apply the produced IDC file against a re-disassembled version of the binary in order to apply all of your old names and comments.