The backup GPT table is corrupt
I'm having an issue when trying to format a pen drive using Gparted. I am trying to create a bootable OS X installation, and for doing so I'm formating a usb drive with GPT and then creating 2 partitions: one with the UFI bootloader and other with the OS, but once it's gparted tells me that "The backup GPT table is corrupt" and does not read the second partition.
It doesn't matter the size it will always read the sdb1 and not the sdb2 (which I need access for copying the files).
Using GDISK I already corrected the GPT (so gparted does not issue an error) but the /dev/sdb2 is still not accessible, with its file system unrecognized.
Can you help with this?
Thank You!
13.04 dual-boot partitioning gparted
asked Sep 16 '13 at 2:37
RaphaelMendesRaphaelMendes
112
bumped to the homepage by Community♦ 9 hours ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
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I'm having an issue when trying to format a pen drive using Gparted. I am trying to create a bootable OS X installation, and for doing so I'm formating a usb drive with GPT and then creating 2 partitions: one with the UFI bootloader and other with the OS, but once it's gparted tells me that "The backup GPT table is corrupt" and does not read the second partition.
It doesn't matter the size it will always read the sdb1 and not the sdb2 (which I need access for copying the files).
Using GDISK I already corrected the GPT (so gparted does not issue an error) but the /dev/sdb2 is still not accessible, with its file system unrecognized.
Can you help with this?
Thank You!
13.04 dual-boot partitioning gparted
asked Sep 16 '13 at 2:37
RaphaelMendesRaphaelMendes
112
bumped to the homepage by Community♦ 9 hours ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
add a comment |
I'm having an issue when trying to format a pen drive using Gparted. I am trying to create a bootable OS X installation, and for doing so I'm formating a usb drive with GPT and then creating 2 partitions: one with the UFI bootloader and other with the OS, but once it's gparted tells me that "The backup GPT table is corrupt" and does not read the second partition.
It doesn't matter the size it will always read the sdb1 and not the sdb2 (which I need access for copying the files).
Using GDISK I already corrected the GPT (so gparted does not issue an error) but the /dev/sdb2 is still not accessible, with its file system unrecognized.
Can you help with this?
Thank You!
13.04 dual-boot partitioning gparted
asked Sep 16 '13 at 2:37
RaphaelMendesRaphaelMendes
112
I'm having an issue when trying to format a pen drive using Gparted. I am trying to create a bootable OS X installation, and for doing so I'm formating a usb drive with GPT and then creating 2 partitions: one with the UFI bootloader and other with the OS, but once it's gparted tells me that "The backup GPT table is corrupt" and does not read the second partition.
It doesn't matter the size it will always read the sdb1 and not the sdb2 (which I need access for copying the files).
Using GDISK I already corrected the GPT (so gparted does not issue an error) but the /dev/sdb2 is still not accessible, with its file system unrecognized.
Can you help with this?
Thank You!
13.04 dual-boot partitioning gparted
13.04 dual-boot partitioning gparted
asked Sep 16 '13 at 2:37
RaphaelMendesRaphaelMendes
112
asked Sep 16 '13 at 2:37
RaphaelMendesRaphaelMendes
112
asked Sep 16 '13 at 2:37
RaphaelMendesRaphaelMendes
112
asked Sep 16 '13 at 2:37
RaphaelMendesRaphaelMendes
112
asked Sep 16 '13 at 2:37
RaphaelMendesRaphaelMendes
112
112
bumped to the homepage by Community♦ 9 hours ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
bumped to the homepage by Community♦ 9 hours ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
add a comment |
add a comment |
1 Answer
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First, what tools and procedures did you use to get to the point of the "backup GPT table is corrupt" message, and is that error message reproducible by reproducing those steps? It could be that you did something wrong in creating the partitions, and that this is causing problems, but without knowing how you created the partition table and filesystems, that's impossible to know for sure.
Second, if the error is reproducible and if you're using common partitioning tools (such as Disk Utility in OS X, GParted or gdisk in Linux, etc.), then it's very unlikely that you'd get a consistent and reproducible problem in the partition table. This makes me think that you may have a defective USB flash drive on your hands. I can't be sure of that, though, particularly if you used some oddball tool to create the partitions.
Third, if a partition (such as /dev/sdb2) is inaccessible, you may need to use filesystem repair tools such as fsck on it. Further diagnosis would require knowledge of what filesystem it is (I'd guess HFS+, if you intend to put OS X on it). The output of sudo fsck /dev/sdb2 and/or sudo blkid /dev/sdb2 would be useful in further diagnosis.
Fourth, if you're trying to create a bootable OS X disk, you should probably be doing this in OS X, not in Linux. Is there some reason you're trying to use Linux for this task?
I recommend you edit your question to provide all this additional information; it's too much to fit in comments.
answered Sep 16 '13 at 18:07
Rod SmithRod Smith
35.4k43970
add a comment |
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1 Answer
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1 Answer
1
active
oldest
votes
active
oldest
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active
oldest
votes
First, what tools and procedures did you use to get to the point of the "backup GPT table is corrupt" message, and is that error message reproducible by reproducing those steps? It could be that you did something wrong in creating the partitions, and that this is causing problems, but without knowing how you created the partition table and filesystems, that's impossible to know for sure.
Second, if the error is reproducible and if you're using common partitioning tools (such as Disk Utility in OS X, GParted or gdisk in Linux, etc.), then it's very unlikely that you'd get a consistent and reproducible problem in the partition table. This makes me think that you may have a defective USB flash drive on your hands. I can't be sure of that, though, particularly if you used some oddball tool to create the partitions.
Third, if a partition (such as /dev/sdb2) is inaccessible, you may need to use filesystem repair tools such as fsck on it. Further diagnosis would require knowledge of what filesystem it is (I'd guess HFS+, if you intend to put OS X on it). The output of sudo fsck /dev/sdb2 and/or sudo blkid /dev/sdb2 would be useful in further diagnosis.
Fourth, if you're trying to create a bootable OS X disk, you should probably be doing this in OS X, not in Linux. Is there some reason you're trying to use Linux for this task?
I recommend you edit your question to provide all this additional information; it's too much to fit in comments.
answered Sep 16 '13 at 18:07
Rod SmithRod Smith
35.4k43970
add a comment |
First, what tools and procedures did you use to get to the point of the "backup GPT table is corrupt" message, and is that error message reproducible by reproducing those steps? It could be that you did something wrong in creating the partitions, and that this is causing problems, but without knowing how you created the partition table and filesystems, that's impossible to know for sure.
Second, if the error is reproducible and if you're using common partitioning tools (such as Disk Utility in OS X, GParted or gdisk in Linux, etc.), then it's very unlikely that you'd get a consistent and reproducible problem in the partition table. This makes me think that you may have a defective USB flash drive on your hands. I can't be sure of that, though, particularly if you used some oddball tool to create the partitions.
Third, if a partition (such as /dev/sdb2) is inaccessible, you may need to use filesystem repair tools such as fsck on it. Further diagnosis would require knowledge of what filesystem it is (I'd guess HFS+, if you intend to put OS X on it). The output of sudo fsck /dev/sdb2 and/or sudo blkid /dev/sdb2 would be useful in further diagnosis.
Fourth, if you're trying to create a bootable OS X disk, you should probably be doing this in OS X, not in Linux. Is there some reason you're trying to use Linux for this task?
I recommend you edit your question to provide all this additional information; it's too much to fit in comments.
answered Sep 16 '13 at 18:07
Rod SmithRod Smith
35.4k43970
add a comment |
First, what tools and procedures did you use to get to the point of the "backup GPT table is corrupt" message, and is that error message reproducible by reproducing those steps? It could be that you did something wrong in creating the partitions, and that this is causing problems, but without knowing how you created the partition table and filesystems, that's impossible to know for sure.
Second, if the error is reproducible and if you're using common partitioning tools (such as Disk Utility in OS X, GParted or gdisk in Linux, etc.), then it's very unlikely that you'd get a consistent and reproducible problem in the partition table. This makes me think that you may have a defective USB flash drive on your hands. I can't be sure of that, though, particularly if you used some oddball tool to create the partitions.
Third, if a partition (such as /dev/sdb2) is inaccessible, you may need to use filesystem repair tools such as fsck on it. Further diagnosis would require knowledge of what filesystem it is (I'd guess HFS+, if you intend to put OS X on it). The output of sudo fsck /dev/sdb2 and/or sudo blkid /dev/sdb2 would be useful in further diagnosis.
Fourth, if you're trying to create a bootable OS X disk, you should probably be doing this in OS X, not in Linux. Is there some reason you're trying to use Linux for this task?
I recommend you edit your question to provide all this additional information; it's too much to fit in comments.
answered Sep 16 '13 at 18:07
Rod SmithRod Smith
35.4k43970
First, what tools and procedures did you use to get to the point of the "backup GPT table is corrupt" message, and is that error message reproducible by reproducing those steps? It could be that you did something wrong in creating the partitions, and that this is causing problems, but without knowing how you created the partition table and filesystems, that's impossible to know for sure.
Second, if the error is reproducible and if you're using common partitioning tools (such as Disk Utility in OS X, GParted or gdisk in Linux, etc.), then it's very unlikely that you'd get a consistent and reproducible problem in the partition table. This makes me think that you may have a defective USB flash drive on your hands. I can't be sure of that, though, particularly if you used some oddball tool to create the partitions.
Third, if a partition (such as /dev/sdb2) is inaccessible, you may need to use filesystem repair tools such as fsck on it. Further diagnosis would require knowledge of what filesystem it is (I'd guess HFS+, if you intend to put OS X on it). The output of sudo fsck /dev/sdb2 and/or sudo blkid /dev/sdb2 would be useful in further diagnosis.
Fourth, if you're trying to create a bootable OS X disk, you should probably be doing this in OS X, not in Linux. Is there some reason you're trying to use Linux for this task?
I recommend you edit your question to provide all this additional information; it's too much to fit in comments.
answered Sep 16 '13 at 18:07
Rod SmithRod Smith
35.4k43970
answered Sep 16 '13 at 18:07
Rod SmithRod Smith
35.4k43970
answered Sep 16 '13 at 18:07
Rod SmithRod Smith
35.4k43970
answered Sep 16 '13 at 18:07
Rod SmithRod Smith
35.4k43970
35.4k43970
add a comment |
add a comment |
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