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--- ubuntu:boot:guid_partition_table_gpt [2019/11/25 22:52] – peter
+++ ubuntu:boot:guid_partition_table_gpt [2020/07/15 09:30] (current) – external edit 127.0.0.1
@@ Line 3: / Line 3: @@
 Globally Unique Identifier Partition Table (GPT).
-The [[[[Boot:Master Boot Record (MBR)|Master Boot Record (MBR)]] type partition table keeps information such as the four primary partition in the first 512 bytes of the hard disk.  In case of GPT the first sector is kept for "protective MBR" so that, old bios based computers can also boot from GPT partition table.
+The [[[[Ubuntu:Boot:Master Boot Record (MBR)|Master Boot Record (MBR)]] type partition table keeps information such as the four primary partition in the first 512 bytes of the hard disk.  In case of GPT the first sector is kept for "protective MBR" so that, old bios based computers can also boot from GPT partition table.
 The GPT partition information starts from the second block (called LBA 1).
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 The partition array entry typically reserves 128 bytes for each partition entry.  For a disk of 512-byte sectors the partition array entry can reach up to 16,384 bytes.  And in most cases the 34'th sector (or block) is the first usable sector in the disk.
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 ===== Merits of GPT partitioning =====
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   * GPT provides 1-byte partition code, but GPT give you a 16-byte GUID value to uniquely identify the partition.
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 ===== Tools for Creating GPT partitions =====
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   * **Gdisk** is also a nice graphical tool to create a GPT partition table.
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 ===== Alternatives =====