Chapter 4 Diagnostics and Troubleshooting 57
Cannot write to or read from
tape.
■ Make sure that the cartridge is write enabled (move the write-
protect switch to the enabled position).
■ Make sure that the cartridge is a DLTtapeIV that has not been
written using an incompatible format. The drive can read, but not
write a DLT 4000 formatted tape.
■ Make sure that the cartridge has not been exposed to harsh
environmental or electrical conditions and is not physically
damaged in any way.
■ Many backup applications do not read or write to cartridges that
were created using a different backup application. In this case,
you may have to perform an erase, format, or label operation on
the cartridge.
■ Make sure you understand any data protection or overwrite
protection schemes that your backup application may be using,
which could prevent you from writing to a given cartridge.
■ Retry the operation with a different, known good tape.
■ Clean the tape drive. See Cleaning the Tape Drive on page 36.
Table 4 Troubleshooting Table
Problem Solution
