I was wondering if anybody has had a similar issue to this before; i attempted to update my OS from Snow Leopard to Mavericks, and when told to 'enable journaling' on my hard disk, i did just that, and within minutes the computer crashed with this error:
panic(cpu caller 0x3044262): "jnl: transaction too big (1569280 >= 1572352 bytes, bufsize 4096, tr 0x8b4cfac bp 0x57e8fcf0)" @/SourceCache/xnu/xnu-1504.15.3/bsd/vfs/vfs_journal.c:2481
Ever since it has been throwing the same error literally on startup, just as the musical note hits with the apple symbol. when i try to boot from a boot disk or go in to safe mode, it hangs on a little longer but always ends the same. I can get into single-user mode but the commands are strictly read-only. Any attempt to mount -uw results in the same error message and the computer locking up again.
I've also noticed "jnl: unknown-dev: journal start/end pointers reset!" appearing when i go into single-user mode. Once in single-user mode my hard drive is exactly how i left it, with all the files in the right place, but i just cant use them.
I've tried using fsck -fy on the root but it says the disk is fine!
Any help would be much appreciated!