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Red Hat Enterprise Linux 7 and later releases do not support installation on i686, 32 bit hardware. ISO installation media is only provided for 64-bit hardware. Refer to Red Hat Enterprise Linux technology capabilities and limits for additional details.

However, 32-bit applications are supported in a 64-bit RHEL 7 & 8 environment in the following scenarios:

RHEL 7 & 8 will continue to provide selected libraries in both 32-bit and 64-bit, allowing 32-bit applications to run in the 64-bit RHEL 7 & 8 OS environment. This functionality also exists for RHEL 5 & 6 as documented in the knowledge article: How to install 32-bit packages on a 64-bit system

RHEL 7 & 8will continue to support the multilib toolchain, allowing applications to be compiled for both 32-bit and 64-bit.

RHEL 7 & 8 can host, using KVM virtualization technology, both 32-bit and 64-bit virtual guest instances of RHEL 5 and RHEL 6.

While RHEL 7 and later releases will not natively support 32-bit hardware, certified hardware can be searched for in the certified hardware database.