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  • What would the device file names be after the 15th partition? /dev/sda16, /dev/sda17... with major/minor [259,0], [259, 1] respectively? Also, this makes me thinking what would the device file name be after sdz, sdaa for example? Commented Jul 30, 2017 at 12:37
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    @frostschutz. The current specification stipulates a MINIMUM of 16,384 bytes be reserved for the GPT partition table array - so there are 128 partition entries. There is nothing stopping you having more than 128 partitions if you increase the size of the partition table array. Commented Jul 30, 2017 at 15:55
  • @fpmurphy1 Is that supported anywhere? parted bails with Error: Too many primary partitions. (Frankly I'd be suprised if just 128 partitions didn't cause problems anywhere. Nobody expects that many partitions.) Commented Jul 30, 2017 at 17:49
  • Okay, gdisk has s resize partition table. Wow. Didn't know that. :) Thanks @fpmurphy1 Commented Jul 30, 2017 at 17:58
  • There is that magic number again 65536. Commented Oct 2, 2021 at 4:36