What is the maximum disk size for a GPT-based partition?

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Multiple Choice

What is the maximum disk size for a GPT-based partition?

Explanation:
GPT uses 64-bit addressing to locate logical blocks, so the maximum number of sectors it can reference is 2^64. With the common 512-byte sector size, that yields 2^64 × 512 bytes = 2^73 bytes. Since 1 ZiB is 2^70 bytes, this is 8 ZiB. So the largest GPT-based disk (under the usual 512-byte sector assumption) is eight zettabytes. If you were using much larger block sizes, the number would change, but the standard figure comes from 512-byte sectors.

GPT uses 64-bit addressing to locate logical blocks, so the maximum number of sectors it can reference is 2^64. With the common 512-byte sector size, that yields 2^64 × 512 bytes = 2^73 bytes. Since 1 ZiB is 2^70 bytes, this is 8 ZiB. So the largest GPT-based disk (under the usual 512-byte sector assumption) is eight zettabytes. If you were using much larger block sizes, the number would change, but the standard figure comes from 512-byte sectors.

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