Install Windows network management, display that use isql to connect database in failure, lead to network installation cannot continue.
Delete the old host name of master.. Sysservers, and add new host name.
The implement script is as follows:
Sp_dropserver @ server = 'old host name'
Sp_addserver @ server = 'new host name'
After SQLServer installation, modify the machine host name, but the SQLServer master.. Sysservers table still keeps the old host name, fail to connect the master.. sysservers name used by installation disk.