Is it safe to change the start of the first partition?
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On 03.07.2012 09:42, Helmut Jarausch wrote:
> On 07/03/2012 09:25:20 AM, Hinnerk van Bruinehsen wrote:
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>> On 03.07.2012 09:09, Helmut Jarausch wrote:
>>> modern fdisk puts the first partition at block 63 while older
>>> version have put it at block 1.
>>> Now, I'm going to upgrade an older system. Is it safe to
>>> repartition it by letting the first partition start 63 and
>>> shortening the first partition by 62 blocks?
>>> (I will loose the first partition which doesn't matter in my
>>> Many thanks for sharing your experience, Helmut.
>> Do you want to resize the partition or do you want to delete and
>> recreate it?
>> The second option is no problem, the first could lead to some
>> data loss (if you are unlucky).
> I'd like to delete and recreate ONLY the first partition (which is
> small). The question is, can I keep the other partitions.
> As far as I remember, I once deleted the extended partition and
> tried to recreate logical partitions "at the same place". But that
> didn't work.
If the first partition is a primary partition it's no issue. If it is
inside a extended partion it gets tricky, because the extended
partition acts like a kind of container.
- From your description I guess it's a boot partition, which normally is
a primary one. In that case just delete it and recreate it afterwards.
Note: you may need to reinstall you bootloader afterwards (due to the
changed partition data) and don't forget to toggle the bootable flag
for that partition.
If it's an extended partition I fear that my experience doesn't
suffice to give you qualifield hints as I try to avoid them.
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