Backup using tar.gz

[Luis Torres]

Hi.

I´m doing some kind of a experiment....I´m using MySQL:
MySQL-devel-4.0.20-0
MySQL-embedded-4.0.20-0
MySQL-server-4.0.20-0
MySQL-client-4.0.20-0
MySQL-bench-4.0.20-0
MySQL-shared-4.0.20-0
MySQL-Max-4.0.20-0
MySQL-shared-compat-4.0.18-0
I stopped mysqld service, and I did a tar.gz of the file /etc/my.cnf, my.cnf contains this:

[mysqld]
# Set data file path and sizes
innodb_data_home_dir =
innodb_data_file_path = /app2/mysqldb/ibdata1:4G;/app2/mysqldb/ibdata2:4G;/app2/mysqldb/ibdata3:4G;/app2/mysqldb/ibdata4:4G;/app2/mysqldb/ibdata5:4G;/app2/mysqldb/ibdata6:4G;/app2/mysqldb/ibdata7:4G;/app2/mysqldb/ibdata8:4G;/app2/mysqldb/ibdata9:4G;/app2/mysqldb/ibdata10:4G;/app2/mysqldb/ibdata11:4G;/app2/mysqldb/ibdata12:4G;/app2/mysqldb/ibdata13:4G;/app2/mysqldb/ibdata14:4G;/app2/mysqldb/ibdata15:4G;/app/mysqldb/ibdata16:4G;/app/mysqldb/ibdata17:4G;/app/mysqldb/ibdata18:4G;/app/mysqldb/ibdata19:4G;/app/mysqldb/ibdata20:4G;/app/mysqldb/ibdata21:632291328;/app3/mysqldb/ibdata22:4G;/app3/mysqldb/ibdata23:4G;/app3/mysqldb/ibdata24:4G;/app3/mysqldb/ibdata25:4G;/app3/mysqldb/ibdata26:4G;/app3/mysqldb/ibdata27:4G
# Log files
innodb_log_arch_dir = /app2/mysqldb
innodb_log_group_home_dir = /app2/mysqldb
#
# Set buffer pool size to 50-80% of your computer's memory
set-variable = innodb_buffer_pool_size=600M
set-variable = innodb_additional_mem_pool_size=10M
#
# Set the log file size to about 25% of the buffer pool size
set-variable = innodb_log_file_size=125M
set-variable = innodb_log_buffer_size=8M
#
innodb_flush_log_at_trx_commit=1


I also did a tar.gz of all ibdata (ibdata1, ibdata2....ibdata27)...then I install another computer with linux, and mysql 5.0...I uncompressed the files (I created the same directories /app/mysqldb and /app2/mysqldb), I replaced the /etc/my.cnf file with the my.cnf.tar.gz file.....but when i tried to start the mysqld service I doesn´t come up.....any clues?