[Instalação do Lion travou o mac.]

Macbook 2009 travou na instalação do Lion 10.5.7. Agora só aparece tela travada com mensagem de restart your computer e no fundo darwin kernel version: 9.7.1.

O que devo fazer? Socorro.

panic (cpu 0 caller 0x004389DF): "Unable to find driver for this platform: "ACPI".n"@/SourceCache/xnu/xnu-1228.14.1/iokit/Kernel/IOPlatformExpert.cpp:1407 (That is the first line. It goes on to say...)

Debugger called: Backtrace (CPU 0), Frame : Return Address (4 potential args on stack) (then there are 7 lines that start with 0x5167bd8: ) Backtrace terminated-invalid frame pointer 0

BSD process name corresponding to current thread: Unknown

Mac OS version: Not yet set

Kernel version: Darwin Kernel Version 9.7.1: Thu Apr 23 13:52:18 PDT 2009; root:xnu-1228.12.14~1/RELEASE_I386

System uptime in nanoseconds: 572666797

[We've encountered the following issues: installation on case-sensitive volumes is not supported. Please choose a different volume for installation.]

Por favor preciso de ajuda. Preciso instalar adobe master collection no OS X El Capitan, mas quando vou instalar os programas ele aparece este erro. Como faço para conseguir instalar?