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Make OS X see expanded space in RAID setup
Authored by: systemsboy on Nov 18, '09 12:24:07PM

This is a great hint. I've set up Apple-branded RAIDs in the past (pre-Intel) and was astounded to learn that, despite what it says in the literature, expanding the RAID volume is not practically possible because of the AFP file system and the APM partition map, which are not expandable.

It's great to see that there's finally a workaround for this problem, but I wanted to add one caveat: this procedure uses the gpt command (GUID partition table maintenance utility), which I'm pretty sure means that your disk must be formatted with the GUID Partiton Table.

To find out what partition table your disk is using, open Disk Utility, select the disk (the device, not the partition) and press the Info button (or hit command-i). The third line is the Partition Map Scheme. If it says GUID Partition Table, you should be good.

If it doesn't, I don't think this hint will work for you.

-systemsboy



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