El Capitan installation problems

Model name: iMac
Model identifier: iMac12, 2
Processor name: Intel Core i5
Processor speed: 2.7 GHz
Number of processors: 1
Total number of cores: 4
L2 Cache (by heart): 256 KB
L3 Cache Memory: 6 MB
Memory: 4 GB
Boot ROM version: IM121.0047.B1F
Version of the SCM (System): 1.72f2
Serial number (System): C0 * RIKOUMAN
Material UUID: ****

I'm on OS X Lion 10.7.5 (G 11, 63).

There are 666,82 GB free on my boot drive.

I have an external drive that I use for backups Time Machine that has more space, 2.6 TB.

When I download and run the installer, it just says: it can not be installed on internal HD-no explaining. If I then choose the external hard drive, it says that it can not install on it because it is used for Time Machine backups.

If I copy the installer to the external hard drive and you are trying to install it on the internal hard disk, it tells me that this is impossible because the internal HD is used for Time Machine backups, (it is).

So what is the cause of the problem and how to fix it?

< personal information under the direction of the host >

Look on your boot drive (internal) and see if there is a Backups.backupsd file on the root of the hard drive. If so, remove it. Then try to reinstall.

Tags: Mac OS & System Software

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